[td-225]merge develop

.appveyor.yml

@@ -1,30 +1,49 @@
 version: 1.0.{build}
-os: Visual Studio 2015
+image: 
+  - Visual Studio 2015
+  - macos
 environment:
   matrix:
     - ARCH: amd64
     - ARCH: x86
+matrix:
+  exclude:
+    - image: macos
+      ARCH: x86
+for:
+  - 
+    matrix:
+      only:
+        - image: Visual Studio 2015
+    clone_folder: c:\dev\TDengine
+    clone_depth: 1
 
-clone_folder: c:\dev\TDengine
-clone_depth: 1
+    init:
+      - call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" %ARCH%
 
-init:
-  - call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" %ARCH%
+    before_build:
+      - cd c:\dev\TDengine
+      - md build
 
-before_build:
-  - cd c:\dev\TDengine
-  - md build
-
-build_script:
-  - cd build
-  - cmake -G "NMake Makefiles" ..
-  - nmake install
+    build_script:
+      - cd build
+      - cmake -G "NMake Makefiles" ..
+      - nmake install
+  -
+    matrix:
+      only:
+        - image: macos
+    clone_depth: 1
 
+    build_script:
+      - mkdir debug
+      - cd debug
+      - cmake .. > /dev/null
+      - make > /dev/null
 notifications:
 - provider: Email
   to:
   - sangshuduo@gmail.com
-  
   on_build_success: true
   on_build_failure: true
   on_build_status_changed: true

.drone.yml

@@ -0,0 +1,198 @@
+---
+kind: pipeline
+name: test_amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: gcc
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential 
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+---
+kind: pipeline
+name: test_arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: build
+  image: gcc
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. -DCPUTYPE=aarch64 > /dev/null
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+---
+kind: pipeline
+name: test_arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+- name: build
+  image: arm32v7/ubuntu:bionic
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. -DCPUTYPE=aarch32 > /dev/null
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: build_trusty
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:trusty
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake3 build-essential git binutils-2.26
+ 
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+---
+kind: pipeline
+name: build_xenial
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:xenial
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: build_bionic
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:bionic
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+---
+kind: pipeline
+name: build_centos7
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ansible/centos7-ansible
+  commands:
+  - yum install -y gcc gcc-c++ make cmake
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  trigger:
+    event:
+      - pull_request
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: goodbye
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: 64-bit
+  image: alpine
+  commands:
+  - echo 64-bit is good.
+  when:
+    branch:
+    - develop
+    - master
+
+
+depends_on:
+- test_arm64
+- test_amd64

.gitignore

@@ -2,6 +2,7 @@ build/
 .vscode/
 .idea/
 cmake-build-debug/
+cmake-build-release/
 cscope.out
 .DS_Store
 debug/

.travis.yml

@@ -1,296 +0,0 @@
-#
-# Configuration
-#
-#
-# Build Matrix
-#
-branches:
-  only:
-    - master
-    - develop
-    - coverity_scan
-    - /^.*ci-.*$/
-
-matrix:
-  - os: linux
-    dist: focal
-    language: c
-
-    git:
-      - depth: 1
-
-    compiler: gcc
-    env: DESC="linux/gcc build and test"
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - net-tools
-          - python3-pip
-          - python3-setuptools
-          - valgrind
-          - psmisc
-          - unixodbc
-          - unixodbc-dev
-          - mono-complete
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - make > /dev/null
-
-    after_success:
-      - travis_wait 20
-      - |-
-        case $TRAVIS_OS_NAME in
-          linux)
-          cd ${TRAVIS_BUILD_DIR}/debug
-          make install > /dev/null || travis_terminate $?
-
-          py3ver=`python3 --version|awk '{print $2}'|cut -d "." -f 1,2` && apt install python$py3ver-dev
-          pip3 install psutil
-          pip3 install guppy3
-          pip3 install --user ${TRAVIS_BUILD_DIR}/src/connector/python/linux/python3/
-
-          cd ${TRAVIS_BUILD_DIR}/tests/examples/C#/taosdemo
-          mcs -out:taosdemo *.cs || travis_terminate $?
-          pkill -TERM -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-          ${TRAVIS_BUILD_DIR}/debug/build/bin/taosd -c ${TRAVIS_BUILD_DIR}/debug/test/cfg > /dev/null &
-          sleep 5
-          mono taosdemo -Q DEFAULT -y || travis_terminate $?
-          pkill -KILL -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests
-          ./test-all.sh smoke || travis_terminate $?
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests/pytest
-          pkill -TERM -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-          ./crash_gen.sh -a -p -t 4 -s 2000|| travis_terminate $?
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests/pytest
-          ./valgrind-test.sh 2>&1 > mem-error-out.log
-          sleep 1
-
-
-          # Color setting
-          RED='\033[0;31m'
-          GREEN='\033[1;32m'
-          GREEN_DARK='\033[0;32m'
-          GREEN_UNDERLINE='\033[4;32m'
-          NC='\033[0m'
-
-          grep 'start to execute\|ERROR SUMMARY' mem-error-out.log|grep -v 'grep'|uniq|tee uniq-mem-error-out.log
-
-          for memError in `grep 'ERROR SUMMARY' uniq-mem-error-out.log | awk '{print $4}'`
-          do
-            if [ -n "$memError" ]; then
-              if [ "$memError" -gt 12 ]; then
-                echo -e "${RED} ## Memory errors number valgrind reports is $memError.\
-                         More than our threshold! ## ${NC}"
-                travis_terminate $memError
-              fi
-            fi
-          done
-
-          grep 'start to execute\|definitely lost:' mem-error-out.log|grep -v 'grep'|uniq|tee uniq-definitely-lost-out.log
-          for defiMemError in `grep 'definitely lost:' uniq-definitely-lost-out.log | awk '{print $7}'`
-          do
-            if [ -n "$defiMemError" ]; then
-              if [ "$defiMemError" -gt 13 ]; then
-                echo -e "${RED} ## Memory errors number valgrind reports \
-                         Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
-                travis_terminate $defiMemError
-              fi
-            fi
-          done
-
-          ;;
-        esac
-
-  - os: linux
-    dist: bionic
-    language: c
-    compiler: gcc
-    env: COVERITY_SCAN=true
-    git:
-      - depth: 1
-
-    script:
-      - echo "this job is for coverity scan"
-
-    addons:
-      coverity_scan:
-        # GitHub project metadata
-        # ** specific to your project **
-        project:
-          name: TDengine
-          version: 2.x
-          description: TDengine
-
-        # Where email notification of build analysis results will be sent
-        notification_email: sdsang@taosdata.com, slguan@taosdata.com
-
-        # Commands to prepare for build_command
-        # ** likely specific to your build **
-        build_command_prepend: cmake . > /dev/null
-
-        # The command that will be added as an argument to "cov-build" to compile your project for analysis,
-        # ** likely specific to your build **
-        build_command: make
-
-        # Pattern to match selecting branches that will run analysis. We recommend leaving this set to 'coverity_scan'.
-        # Take care in resource usage, and consider the build frequency allowances per
-        #   https://scan.coverity.com/faq#frequency
-        branch_pattern: coverity_scan
-
-  - os: linux
-    dist: trusty
-    language: c
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - binutils-2.26
-          - unixodbc
-          - unixodbc-dev
-    env: 
-      - DESC="trusty/gcc-4.8/bintuils-2.26 build"
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - export PATH=/usr/lib/binutils-2.26/bin:$PATH && make
-
-  - os: linux
-    dist: bionic
-    language: c
-    compiler: clang
-    env: DESC="linux/clang build"
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - unixodbc
-          - unixodbc-dev
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - make  > /dev/null
-
-  - os: linux
-    arch: arm64
-    dist: bionic
-    language: c
-    compiler: clang
-    env: DESC="arm64 linux/clang build"
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - if [ "${TRAVIS_CPU_ARCH}" == "arm64" ]; then
-         cmake .. -DCPUTYPE=aarch64 > /dev/null;
-        else
-         cmake .. > /dev/null;
-        fi
-      - make > /dev/null
-
-  - os: linux
-    arch: arm64
-    dist: xenial
-    language: c
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - unixodbc
-          - unixodbc-dev
-    env:
-      - DESC="arm64 xenial build"
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - if [ "${TRAVIS_CPU_ARCH}" == "arm64" ]; then
-         cmake .. -DCPUTYPE=aarch64 > /dev/null;
-        else
-         cmake .. > /dev/null;
-        fi
-      - make > /dev/null
-
-  - os: osx
-    osx_image: xcode11.4
-    language: c
-    compiler: clang
-    env: DESC="mac/clang build"
-    git:
-      - depth: 1
-    addons:
-      homebrew:
-        - cmake
-        - unixodbc
-
-    script:
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-      - cmake .. > /dev/null
-      - make > /dev/null

CMakeLists.txt

@@ -3,7 +3,7 @@ IF (CMAKE_VERSION VERSION_LESS 3.0)
   PROJECT(TDengine CXX)
   SET(PROJECT_VERSION_MAJOR "${LIB_MAJOR_VERSION}")
   SET(PROJECT_VERSION_MINOR "${LIB_MINOR_VERSION}")
-  SET(PROJECT_VERSION_PATCH"${LIB_PATCH_VERSION}")
+  SET(PROJECT_VERSION_PATCH "${LIB_PATCH_VERSION}")
   SET(PROJECT_VERSION "${LIB_VERSION_STRING}")
 ELSE ()
   CMAKE_POLICY(SET CMP0048 NEW)
@@ -42,6 +42,13 @@ INCLUDE(cmake/env.inc)
 INCLUDE(cmake/version.inc)
 INCLUDE(cmake/install.inc)
 
+IF (CMAKE_SYSTEM_NAME MATCHES "Linux")
+  SET(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -pipe -Wall -Wshadow -Werror")
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe -Wall -Wshadow -Werror")
+ENDIF ()
+MESSAGE(STATUS "CMAKE_C_FLAGS:   ${CMAKE_C_FLAGS}")
+MESSAGE(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
+
 ADD_SUBDIRECTORY(deps)
 ADD_SUBDIRECTORY(src)
 ADD_SUBDIRECTORY(tests)

Jenkinsfile

@@ -94,6 +94,7 @@ def pre_test(){
     make > /dev/null
     make install > /dev/null
     cd ${WKC}/tests
+    pip3 install ${WKC}/src/connector/python
     '''
     return 1
 }

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/taosdata/TDengine.svg?branch=master)](https://travis-ci.org/taosdata/TDengine)
+[![Build Status](https://cloud.drone.io/api/badges/taosdata/TDengine/status.svg?ref=refs/heads/master)](https://cloud.drone.io/taosdata/TDengine)
 [![Build status](https://ci.appveyor.com/api/projects/status/kf3pwh2or5afsgl9/branch/master?svg=true)](https://ci.appveyor.com/project/sangshuduo/tdengine-2n8ge/branch/master)
 [![Coverage Status](https://coveralls.io/repos/github/taosdata/TDengine/badge.svg?branch=develop)](https://coveralls.io/github/taosdata/TDengine?branch=develop)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4201/badge)](https://bestpractices.coreinfrastructure.org/projects/4201)

cmake/define.inc

@@ -157,7 +157,7 @@ IF (TD_WINDOWS)
     IF (MSVC AND (MSVC_VERSION GREATER_EQUAL 1900))
       SET(COMMON_FLAGS "${COMMON_FLAGS} /Wv:18")
     ENDIF ()
-    SET(DEBUG_FLAGS "/Zi /W3 /GL")
+    SET(DEBUG_FLAGS "/fsanitize=thread /fsanitize=leak /fsanitize=memory /fsanitize=undefined /fsanitize=hwaddress /Zi /W3 /GL")
     SET(RELEASE_FLAGS "/W0 /O3 /GL")
   ENDIF ()
 

cmake/env.inc

@@ -32,6 +32,7 @@ ENDIF ()
 #
 
 # Set compiler options
+SET(COMMON_C_FLAGS "${COMMON_FLAGS} -std=gnu99")
 SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${COMMON_FLAGS} ${DEBUG_FLAGS}")
 SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${COMMON_FLAGS} ${RELEASE_FLAGS}")
 

cmake/install.inc

@@ -32,7 +32,7 @@ ELSEIF (TD_WINDOWS)
   #INSTALL(TARGETS taos RUNTIME DESTINATION driver)
   #INSTALL(TARGETS shell RUNTIME DESTINATION .)
   IF (TD_MVN_INSTALLED)
-    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.28-dist.jar DESTINATION connector/jdbc)
+    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.29.jar DESTINATION connector/jdbc)
   ENDIF ()
 ELSEIF (TD_DARWIN)
   SET(TD_MAKE_INSTALL_SH "${TD_COMMUNITY_DIR}/packaging/tools/make_install.sh")

cmake/version.inc

@@ -4,7 +4,7 @@ PROJECT(TDengine)
 IF (DEFINED VERNUMBER)
   SET(TD_VER_NUMBER ${VERNUMBER})
 ELSE ()
-  SET(TD_VER_NUMBER "2.0.20.0")
+  SET(TD_VER_NUMBER "2.1.0.0")
 ENDIF ()
 
 IF (DEFINED VERCOMPATIBLE)

deps/rmonotonic/src/monotonic.c

@@ -36,6 +36,15 @@ static char monotonic_info_string[32];
 
 static long mono_ticksPerMicrosecond = 0;
 
+#ifdef _TD_NINGSI_60
+// implement __rdtsc in ningsi60
+uint64_t __rdtsc(){
+    unsigned int lo,hi;
+    __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+    return ((uint64_t)hi << 32) | lo;
+}
+#endif
+
 static monotime getMonotonicUs_x86() {
     return __rdtsc() / mono_ticksPerMicrosecond;
 }

documentation20/cn/00.index/docs.md

@@ -117,9 +117,9 @@ TDengine是一个高效的存储、查询、分析时序大数据的平台，专
 ## 常用工具
 
 * [TDengine样例导入工具](https://www.taosdata.com/blog/2020/01/18/1166.html)
-* [TDengine性能对比测试工具](https://www.taosdata.com/blog/2020/01/18/1166.html)
+* [TDengine写入性能测试工具](https://www.taosdata.com/blog/2020/01/18/1166.html)
 * [IDEA数据库管理工具可视化使用TDengine](https://www.taosdata.com/blog/2020/08/27/1767.html)
-* [基于eletron开发的跨平台TDengine图形化管理工具](https://github.com/skye0207/TDengineGUI)
+* [基于Electron开发的跨平台TDengine图形化管理工具](https://github.com/skye0207/TDengineGUI)
 * [DataX，支持TDengine的离线数据采集/同步工具](https://github.com/wgzhao/DataX)（文档：[读取插件](https://github.com/wgzhao/DataX/blob/master/docs/src/main/sphinx/reader/tdenginereader.md)、[写入插件](https://github.com/wgzhao/DataX/blob/master/docs/src/main/sphinx/writer/tdenginewriter.md)）
 
 ## TDengine与其他数据库的对比测试

documentation20/cn/06.queries/docs.md

@@ -12,7 +12,7 @@ TDengine 采用 SQL 作为查询语言。应用程序可以通过 C/C++, Java, G
 - 时间戳对齐的连接查询（Join Query: 隐式连接）操作
 - 多种聚合/计算函数: count, max, min, avg, sum, twa, stddev, leastsquares, top, bottom, first, last, percentile, apercentile, last_row, spread, diff等
 
-例如：在TAOS Shell中，从表d1001中查询出vlotage > 215的记录，按时间降序排列，仅仅输出2条。
+例如：在TAOS Shell中，从表d1001中查询出voltage > 215的记录，按时间降序排列，仅仅输出2条。
 ```mysql
 taos> select * from d1001 where voltage > 215 order by ts desc limit 2;
            ts            |       current        |   voltage   |        phase         |

documentation20/cn/08.connector/01.java/docs.md

@@ -16,7 +16,6 @@ TDengine 的 JDBC 驱动实现尽可能与关系型数据库驱动保持一致
 
 * TDengine 目前不支持针对单条数据记录的删除操作。
 * 目前不支持事务操作。
-* 目前不支持表间的 union 操作。
 * 目前不支持嵌套查询（nested query）。
 * 对每个 Connection 的实例，至多只能有一个打开的 ResultSet 实例；如果在 ResultSet 还没关闭的情况下执行了新的查询，taos-jdbcdriver 会自动关闭上一个 ResultSet。
 
@@ -447,7 +446,7 @@ Query OK, 1 row(s) in set (0.000141s)
 
 
 
-## TAOS-JDBCDriver 版本以及支持的 TDengine 版本和 JDK 版本
+## <a class="anchor" id="version"></a>TAOS-JDBCDriver 版本以及支持的 TDengine 版本和 JDK 版本
 
 | taos-jdbcdriver 版本 | TDengine 版本     | JDK 版本 |
 | -------------------- | ----------------- | -------- |

documentation20/cn/08.connector/docs.md

@@ -32,7 +32,7 @@ TDengine提供了丰富的应用程序开发接口，其中包括C/C++、Java、
 
 **Linux**
 
-**1.   从涛思官网（https://www.taosdata.com/cn/all-downloads/）下载**
+**1.   从[涛思官网](https://www.taosdata.com/cn/all-downloads/)下载**
 
 * X64硬件环境：TDengine-client-2.x.x.x-Linux-x64.tar.gz
 
@@ -68,7 +68,7 @@ TDengine提供了丰富的应用程序开发接口，其中包括C/C++、Java、
 
 **Windows x64/x86**
 
-**1.   从涛思官网（https://www.taosdata.com/cn/all-downloads/）下载 ：**
+**1.   从[涛思官网](https://www.taosdata.com/cn/all-downloads/)下载 ：**
 
 * X64硬件环境：TDengine-client-2.X.X.X-Windows-x64.exe
 
@@ -345,11 +345,11 @@ TDengine提供时间驱动的实时流式计算API。可以每隔一指定的时
     * taos：已经建立好的数据库连接
     * sql：SQL查询语句（仅能使用查询语句）
     * fp：用户定义的回调函数指针，每次流式计算完成后，TDengine将查询的结果（TAOS_ROW）、查询状态（TAOS_RES）、用户定义参数（PARAM）传递给回调函数，在回调函数内，用户可以使用taos_num_fields获取结果集列数，taos_fetch_fields获取结果集每列数据的类型。
-    * stime：是流式计算开始的时间，如果是0，表示从现在开始，如果不为零，表示从指定的时间开始计算（UTC时间从1970/1/1算起的毫秒数）
+    * stime：是流式计算开始的时间。如果是“64位整数最小值”，表示从现在开始；如果不为“64位整数最小值”，表示从指定的时间开始计算（UTC时间从1970/1/1算起的毫秒数）。
     * param：是应用提供的用于回调的一个参数，回调时，提供给应用
     * callback: 第二个回调函数，会在连续查询自动停止时被调用。
 
-  返回值为NULL，表示创建成功，返回值不为空，表示成功。
+  返回值为NULL，表示创建失败；返回值不为空，表示成功。
 
 - `void taos_close_stream (TAOS_STREAM *tstr)`
 
@@ -400,27 +400,22 @@ Python连接器的使用参见[视频教程](https://www.taosdata.com/blog/2020/
 
 #### Linux
 
-用户可以在源代码的src/connector/python（或者tar.gz的/connector/python）文件夹下找到python2和python3的connector安装包。用户可以通过pip命令安装： 
+用户可以在源代码的src/connector/python（或者tar.gz的/connector/python）文件夹下找到connector安装包。用户可以通过pip命令安装： 
 
-​		`pip install src/connector/python/linux/python2/`
+​		`pip install src/connector/python/`
 
 或
 
-​		`pip3 install src/connector/python/linux/python3/`
+​		`pip3 install src/connector/python/`
 
 #### Windows
 在已安装Windows TDengine 客户端的情况下， 将文件"C:\TDengine\driver\taos.dll" 拷贝到 "C:\windows\system32" 目录下, 然后进入Windwos <em>cmd</em> 命令行界面
 ```cmd
-cd C:\TDengine\connector\python\windows
-python -m pip install python2\
-```
-或
-```cmd
-cd C:\TDengine\connector\python\windows
-python -m pip install python3\
+cd C:\TDengine\connector\python
+python -m pip install .
 ```
 
-* 如果机器上没有pip命令，用户可将src/connector/python/python3或src/connector/python/python2下的taos文件夹拷贝到应用程序的目录使用。
+* 如果机器上没有pip命令，用户可将src/connector/python下的taos文件夹拷贝到应用程序的目录使用。
 对于windows 客户端，安装TDengine windows 客户端后，将C:\TDengine\driver\taos.dll拷贝到C:\windows\system32目录下即可。
 
 ### 使用

documentation20/cn/09.connections/docs.md

@@ -16,7 +16,7 @@ TDengine的Grafana插件在安装包的/usr/local/taos/connector/grafanaplugin
 以CentOS 7.2操作系统为例，将grafanaplugin目录拷贝到/var/lib/grafana/plugins目录下，重新启动grafana即可。
 
 ```bash
-sudo cp -rf /usr/local/taos/connector/grafanaplugin /var/lib/grafana/tdengine
+sudo cp -rf /usr/local/taos/connector/grafanaplugin /var/lib/grafana/plugins/tdengine
 ```
 
 ### 使用 Grafana

documentation20/cn/11.administrator/docs.md

@@ -144,7 +144,7 @@ TDengine集群中加入一个新的dnode时，涉及集群相关的一些参数
 - numOfMnodes：系统中管理节点个数。默认值：3。
 - balance：是否启动负载均衡。0：否，1：是。默认值：1。
 - mnodeEqualVnodeNum: 一个mnode等同于vnode消耗的个数。默认值：4。
-- offlineThreshold: dnode离线阈值，超过该时间将导致该dnode从集群中删除。单位为秒，默认值：86400*100（即100天）。
+- offlineThreshold: dnode离线阈值，超过该时间将导致该dnode从集群中删除。单位为秒，默认值：86400*10（即10天）。
 - statusInterval: dnode向mnode报告状态时长。单位为秒，默认值：1。
 - maxTablesPerVnode: 每个vnode中能够创建的最大表个数。默认值：1000000。
 - maxVgroupsPerDb: 每个数据库中能够使用的最大vgroup个数。
@@ -462,31 +462,31 @@ TDengine的所有可执行文件默认存放在 _/usr/local/taos/bin_ 目录下
 
 | 关键字列表 |             |              |            |           |
 | ---------- | ----------- | ------------ | ---------- | --------- |
-| ABLOCKS    | CONNECTIONS | HAVING       | MODULES    | SLIMIT    |
-| ABORT      | COPY        | ID           | NCHAR      | SMALLINT  |
-| ACCOUNT    | COUNT       | IF           | NE         | SPREAD    |
-| ACCOUNTS   | CREATE      | IGNORE       | NONE       | STABLE    |
-| ADD        | CTIME       | IMMEDIATE    | NOT        | STABLES   |
-| AFTER      | DATABASE    | IMPORT       | NOTNULL    | STAR      |
-| ALL        | DATABASES   | IN           | NOW        | STATEMENT |
-| ALTER      | DAYS        | INITIALLY    | OF         | STDDEV    |
-| AND        | DEFERRED    | INSERT       | OFFSET     | STREAM    |
-| AS         | DELIMITERS  | INSTEAD      | OR         | STREAMS   |
-| ASC        | DESC        | INTEGER      | ORDER      | STRING    |
-| ATTACH     | DESCRIBE    | INTERVAL     | PASS       | SUM       |
-| AVG        | DETACH      | INTO         | PERCENTILE | TABLE     |
-| BEFORE     | DIFF        | IP           | PLUS       | TABLES    |
-| BEGIN      | DISTINCT    | IS           | PRAGMA     | TAG       |
-| BETWEEN    | DIVIDE      | ISNULL       | PREV       | TAGS      |
-| BIGINT     | DNODE       | JOIN         | PRIVILEGE  | TBLOCKS   |
-| BINARY     | DNODES      | KEEP         | QUERIES    | TBNAME    |
-| BITAND     | DOT         | KEY          | QUERY      | TIMES     |
-| BITNOT     | DOUBLE      | KILL         | RAISE      | TIMESTAMP |
-| BITOR      | DROP        | LAST         | REM        | TINYINT   |
-| BOOL       | EACH        | LE           | REPLACE    | TOP       |
-| BOTTOM     | END         | LEASTSQUARES | REPLICA    | TOPIC     |
-| BY         | EQ          | LIKE         | RESET      | TRIGGER   |
-| CACHE      | EXISTS      | LIMIT        | RESTRICT   | UMINUS    |
+| ABLOCKS    | CONNECTIONS | HAVING       | MODULES    | SMALLINT  |
+| ABORT      | COPY        | ID           | NCHAR      | SPREAD    |
+| ACCOUNT    | COUNT       | IF           | NE         | STABLE    |
+| ACCOUNTS   | CREATE      | IGNORE       | NONE       | STABLES   |
+| ADD        | CTIME       | IMMEDIATE    | NOT        | STAR      |
+| AFTER      | DATABASE    | IMPORT       | NOTNULL    | STATEMENT |
+| ALL        | DATABASES   | IN           | NOW        | STDDEV    |
+| ALTER      | DAYS        | INITIALLY    | OF         | STREAM    |
+| AND        | DEFERRED    | INSERT       | OFFSET     | STREAMS   |
+| AS         | DELIMITERS  | INSTEAD      | OR         | STRING    |
+| ASC        | DESC        | INTEGER      | ORDER      | SUM       |
+| ATTACH     | DESCRIBE    | INTERVAL     | PASS       | TABLE     |
+| AVG        | DETACH      | INTO         | PERCENTILE | TABLES    |
+| BEFORE     | DIFF        | IP           | PLUS       | TAG       |
+| BEGIN      | DISTINCT    | IS           | PRAGMA     | TAGS      |
+| BETWEEN    | DIVIDE      | ISNULL       | PREV       | TBLOCKS   |
+| BIGINT     | DNODE       | JOIN         | PRIVILEGE  | TBNAME    |
+| BINARY     | DNODES      | KEEP         | QUERIES    | TIMES     |
+| BITAND     | DOT         | KEY          | QUERY      | TIMESTAMP |
+| BITNOT     | DOUBLE      | KILL         | RAISE      | TINYINT   |
+| BITOR      | DROP        | LAST         | REM        | TOP       |
+| BOOL       | EACH        | LE           | REPLACE    | TOPIC     |
+| BOTTOM     | END         | LEASTSQUARES | REPLICA    | TRIGGER   |
+| BY         | EQ          | LIKE         | RESET      | UMINUS    |
+| CACHE      | EXISTS      | LIMIT        | RESTRICT   | UNION     |
 | CASCADE    | EXPLAIN     | LINEAR       | ROW        | UPLUS     |
 | CHANGE     | FAIL        | LOCAL        | ROWS       | USE       |
 | CLOG       | FILL        | LP           | RP         | USER      |
@@ -498,5 +498,5 @@ TDengine的所有可执行文件默认存放在 _/usr/local/taos/bin_ 目录下
 | CONCAT     | GLOB        | METRICS      | SHOW       | VIEW      |
 | CONFIGS    | GRANTS      | MIN          | SLASH      | WAVG      |
 | CONFLICT   | GROUP       | MINUS        | SLIDING    | WHERE     |
-| CONNECTION | GT          | MNODES       |            |           |
+| CONNECTION | GT          | MNODES       | SLIMIT     |           |
 

documentation20/cn/12.taos-sql/docs.md

@@ -135,6 +135,14 @@ TDengine 缺省的时间戳是毫秒精度，但通过修改配置参数 enableM
     SHOW DATABASES;
     ```
 
+- **显示一个数据库的创建语句**
+
+    ```mysql
+    SHOW CREATE DATABASE db_name;
+    ```
+    常用于数据库迁移。对一个已经存在的数据库，返回其创建语句；在另一个集群中执行该语句，就能得到一个设置完全相同的 Database。
+
+
 ## <a class="anchor" id="table"></a>表管理
 
 - **创建数据表**
@@ -200,6 +208,13 @@ TDengine 缺省的时间戳是毫秒精度，但通过修改配置参数 enableM
 
     通配符匹配：1）’%’ (百分号)匹配0到任意个字符；2）’\_’下划线匹配一个字符。
 
+- **显示一个数据表的创建语句**
+
+    ```mysql
+    SHOW CREATE TABLE tb_name;
+    ```
+    常用于数据库迁移。对一个已经存在的数据表，返回其创建语句；在另一个集群中执行该语句，就能得到一个结构完全相同的数据表。
+
 - **在线修改显示字符宽度**
 
     ```mysql
@@ -265,6 +280,13 @@ TDengine 缺省的时间戳是毫秒精度，但通过修改配置参数 enableM
     ```
     查看数据库内全部 STable，及其相关信息，包括 STable 的名称、创建时间、列数量、标签（TAG）数量、通过该 STable 建表的数量。
 
+- **显示一个超级表的创建语句**
+
+    ```mysql
+    SHOW CREATE STABLE stb_name;
+    ```
+    常用于数据库迁移。对一个已经存在的超级表，返回其创建语句；在另一个集群中执行该语句，就能得到一个结构完全相同的超级表。
+
 - **获取超级表的结构信息**
 
     ```mysql
@@ -407,7 +429,7 @@ SELECT select_expr [, select_expr ...]
     [INTERVAL (interval_val [, interval_offset])]
     [SLIDING sliding_val]
     [FILL fill_val]
-    [GROUP BY col_list <!-- [HAVING having_condition] -->]
+    [GROUP BY col_list]
     [ORDER BY col_list { DESC | ASC }]
     [SLIMIT limit_val [SOFFSET offset_val]]
     [LIMIT limit_val [OFFSET offset_val]]
@@ -647,7 +669,7 @@ Query OK, 1 row(s) in set (0.001091s)
 3. 从 2.0.17 版本开始，条件过滤开始支持 BETWEEN AND 语法，例如 `WHERE col2 BETWEEN 1.5 AND 3.25` 表示查询条件为“1.5 ≤ col2 ≤ 3.25”。
 
 <!-- 
-### GROUP BY 之后的 HAVING 过滤
+### <a class="anchor" id="having"></a>GROUP BY 之后的 HAVING 过滤
 
 从 2.0.20 版本开始，GROUP BY 之后允许再跟一个 HAVING 子句，对成组后的各组数据再做筛选。HAVING 子句可以使用聚合函数和选择函数作为过滤条件（但暂时不支持 LEASTSQUARES、TOP、BOTTOM、LAST_ROW）。
 
@@ -657,6 +679,16 @@ SELECT AVG(f1), SPREAD(f1, f2, st2.f1) FROM st2 WHERE f1 > 0 GROUP BY f1 HAVING
 ```
 -->
 
+### <a class="anchor" id="union"></a>UNION ALL 操作符
+
+```mysql
+SELECT ...
+UNION ALL SELECT ...
+[UNION ALL SELECT ...]
+```
+
+TDengine 支持 UNION ALL 操作符。也就是说，如果多个 SELECT 子句返回结果集的结构完全相同（列名、列类型、列数、顺序），那么可以通过 UNION ALL 把这些结果集合并到一起。目前只支持 UNION ALL 模式，也即在结果集的合并过程中是不去重的。
+
 ### SQL 示例 
 
 - 对于下面的例子，表tb1用以下语句创建

packaging/deb/makedeb.sh

@@ -58,7 +58,12 @@ cp ${compile_dir}/build/lib/${libfile}              ${pkg_dir}${install_home_pat
 cp ${compile_dir}/../src/inc/taos.h                 ${pkg_dir}${install_home_path}/include
 cp ${compile_dir}/../src/inc/taoserror.h            ${pkg_dir}${install_home_path}/include
 cp -r ${top_dir}/tests/examples/*                   ${pkg_dir}${install_home_path}/examples
-cp -r ${top_dir}/src/connector/grafanaplugin        ${pkg_dir}${install_home_path}/connector
+if [ -d "${top_dir}/src/connector/grafanaplugin/dist" ]; then
+  cp -r ${top_dir}/src/connector/grafanaplugin/dist   ${pkg_dir}${install_home_path}/connector/grafanaplugin
+else
+  echo "grafanaplugin bundled directory not found!"
+  exit 1
+fi
 cp -r ${top_dir}/src/connector/python               ${pkg_dir}${install_home_path}/connector
 cp -r ${top_dir}/src/connector/go                   ${pkg_dir}${install_home_path}/connector
 cp -r ${top_dir}/src/connector/nodejs               ${pkg_dir}${install_home_path}/connector

packaging/release.sh

@@ -1,11 +1,11 @@
 #!/bin/bash
 #
-# Generate the deb package for ubunt, or rpm package for centos, or tar.gz package for other linux os
+# Generate the deb package for ubuntu, or rpm package for centos, or tar.gz package for other linux os
 
 set -e
 #set -x
 
-# releash.sh  -v [cluster | edge]  
+# release.sh  -v [cluster | edge]
 #             -c [aarch32 | aarch64 | x64 | x86 | mips64 ...] 
 #             -o [Linux | Kylin | Alpine | Raspberrypi | Darwin | Windows | Ningsi60 | Ningsi80 |...]
 #             -V [stable | beta]

packaging/rpm/tdengine.spec

@@ -66,7 +66,12 @@ cp %{_compiledir}/build/bin/taosdump                %{buildroot}%{homepath}/bin
 cp %{_compiledir}/build/lib/${libfile}              %{buildroot}%{homepath}/driver
 cp %{_compiledir}/../src/inc/taos.h                 %{buildroot}%{homepath}/include
 cp %{_compiledir}/../src/inc/taoserror.h            %{buildroot}%{homepath}/include
-cp -r %{_compiledir}/../src/connector/grafanaplugin %{buildroot}%{homepath}/connector
+if [ -d %{_compiledir}/../src/connector/grafanaplugin/dist ]; then
+    cp -r %{_compiledir}/../src/connector/grafanaplugin/dist %{buildroot}%{homepath}/connector/grafanaplugin
+else
+    echo grafanaplugin bundled directory not found!
+    exit 1
+fi
 cp -r %{_compiledir}/../src/connector/python        %{buildroot}%{homepath}/connector
 cp -r %{_compiledir}/../src/connector/go            %{buildroot}%{homepath}/connector
 cp -r %{_compiledir}/../src/connector/nodejs        %{buildroot}%{homepath}/connector

packaging/tools/install.sh

@@ -607,6 +607,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo 'Type=simple'                        >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/taosd'           >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStartPre=/usr/local/taos/bin/startPre.sh'         >> ${taosd_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'            >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'               >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                 >> ${taosd_service_config}"
@@ -630,6 +631,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo '[Service]'                               >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'Type=simple'                             >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/tarbitrator'          >> ${tarbitratord_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                 >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'                    >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                     >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                      >> ${tarbitratord_service_config}"
@@ -655,6 +657,7 @@ function install_service_on_systemd() {
         ${csudo} bash -c "echo 'PIDFile=/usr/local/nginxd/logs/nginx.pid'           >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'ExecStart=/usr/local/nginxd/sbin/nginx'             >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'ExecStop=/usr/local/nginxd/sbin/nginx -s stop'      >> ${nginx_service_config}"
+        ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                            >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitNOFILE=infinity'                               >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitNPROC=infinity'                                >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitCORE=infinity'                                 >> ${nginx_service_config}"

packaging/tools/install_arbi.sh

@@ -205,6 +205,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo '[Service]'                               >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'Type=simple'                             >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/tarbitrator'          >> ${tarbitratord_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                 >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'                    >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                     >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                      >> ${tarbitratord_service_config}"

packaging/tools/install_arbi_power.sh

@@ -205,6 +205,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo '[Service]'                               >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'Type=simple'                             >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/tarbitrator'          >> ${tarbitratord_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                 >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'                    >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                     >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                      >> ${tarbitratord_service_config}"

packaging/tools/install_power.sh

@@ -577,6 +577,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo 'Type=simple'                         >> ${powerd_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/powerd'           >> ${powerd_service_config}"
     ${csudo} bash -c "echo 'ExecStartPre=/usr/local/power/bin/startPre.sh'           >> ${powerd_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'             >> ${powerd_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'                >> ${powerd_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                 >> ${powerd_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                  >> ${powerd_service_config}"
@@ -599,6 +600,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo '[Service]'                               >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'Type=simple'                             >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/tarbitrator'          >> ${tarbitratord_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                 >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'                    >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                     >> ${tarbitratord_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                      >> ${tarbitratord_service_config}"
@@ -624,6 +626,7 @@ function install_service_on_systemd() {
         ${csudo} bash -c "echo 'PIDFile=/usr/local/nginxd/logs/nginx.pid'           >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'ExecStart=/usr/local/nginxd/sbin/nginx'             >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'ExecStop=/usr/local/nginxd/sbin/nginx -s stop'      >> ${nginx_service_config}"
+        ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'                            >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitNOFILE=infinity'                               >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitNPROC=infinity'                                >> ${nginx_service_config}"
         ${csudo} bash -c "echo 'LimitCORE=infinity'                                 >> ${nginx_service_config}"

packaging/tools/make_install.sh

@@ -243,9 +243,17 @@ function install_data() {
 }
 
 function install_connector() {
-    ${csudo} cp -rf ${source_dir}/src/connector/grafanaplugin ${install_main_dir}/connector
+    if [ -d "${source_dir}/src/connector/grafanaplugin/dist" ]; then
+        ${csudo} cp -rf ${source_dir}/src/connector/grafanaplugin/dist ${install_main_dir}/connector/grafanaplugin
+    else
+        echo "WARNING: grafanaplugin bundled dir not found, please check if want to use it!"
+    fi
+    if find ${source_dir}/src/connector/go -mindepth 1 -maxdepth 1 | read; then
+        ${csudo} cp -r ${source_dir}/src/connector/go ${install_main_dir}/connector
+    else
+        echo "WARNING: go connector not found, please check if want to use it!"
+    fi
     ${csudo} cp -rf ${source_dir}/src/connector/python ${install_main_dir}/connector
-    ${csudo} cp -rf ${source_dir}/src/connector/go ${install_main_dir}/connector
         
     ${csudo} cp ${binary_dir}/build/lib/*.jar ${install_main_dir}/connector &> /dev/null && ${csudo} chmod 777 ${install_main_dir}/connector/*.jar || echo &> /dev/null 
 }
@@ -333,6 +341,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo 'Type=simple'                        >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/taosd'           >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStartPre=/usr/local/taos/bin/startPre.sh'           >> ${taosd_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'            >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'               >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                 >> ${taosd_service_config}"

packaging/tools/makeclient.sh

@@ -117,10 +117,18 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
   if [ "$osType" != "Darwin" ]; then
     cp ${build_dir}/lib/*.jar      ${install_dir}/connector ||:
   fi
-  cp -r ${connector_dir}/grafanaplugin ${install_dir}/connector/
-  cp -r ${connector_dir}/python        ${install_dir}/connector/
-  cp -r ${connector_dir}/go            ${install_dir}/connector
-  cp -r ${connector_dir}/nodejs        ${install_dir}/connector
+  if [ -d "${connector_dir}/grafanaplugin/dist" ]; then
+    cp -r ${connector_dir}/grafanaplugin/dist ${install_dir}/connector/grafanaplugin
+  else
+    echo "WARNING: grafanaplugin bundled dir not found, please check if want to use it!"
+  fi
+  if find ${connector_dir}/go -mindepth 1 -maxdepth 1 | read; then
+    cp -r ${connector_dir}/go ${install_dir}/connector
+  else
+    echo "WARNING: go connector not found, please check if want to use it!"
+  fi
+  cp -r ${connector_dir}/python             ${install_dir}/connector
+  cp -r ${connector_dir}/nodejs             ${install_dir}/connector
 fi
 # Copy release note
 # cp ${script_dir}/release_note ${install_dir}

packaging/tools/makeclient_power.sh

@@ -144,24 +144,23 @@ if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
   if [ "$osType" != "Darwin" ]; then
     cp ${build_dir}/lib/*.jar      ${install_dir}/connector ||:
   fi
-  cp -r ${connector_dir}/grafanaplugin ${install_dir}/connector/
-  cp -r ${connector_dir}/python  ${install_dir}/connector/
-  cp -r ${connector_dir}/go      ${install_dir}/connector 
+  if [ -d "${connector_dir}/grafanaplugin/dist" ]; then
+    cp -r ${connector_dir}/grafanaplugin/dist ${install_dir}/connector/grafanaplugin
+  else
+    echo "WARNING: grafanaplugin bunlded dir not found, please check if want to use it!"
+  fi
+  if find ${connector_dir}/go -mindepth 1 -maxdepth 1 | read; then
+    cp -r ${connector_dir}/go ${install_dir}/connector
+  else
+    echo "WARNING: go connector not found, please check if want to use it!"
+  fi
+  cp -r ${connector_dir}/python  ${install_dir}/connector
   
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/cinterface.py
+  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/cinterface.py
   
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/subscription.py
+  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/subscription.py
   
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/connection.py 
+  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/connection.py
 fi
 # Copy release note
 # cp ${script_dir}/release_note ${install_dir}

packaging/tools/makepkg.sh

@@ -131,9 +131,17 @@ connector_dir="${code_dir}/connector"
 mkdir -p ${install_dir}/connector
 if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
   cp ${build_dir}/lib/*.jar            ${install_dir}/connector ||:
-  cp -r ${connector_dir}/grafanaplugin ${install_dir}/connector/
-  cp -r ${connector_dir}/python        ${install_dir}/connector/
-  cp -r ${connector_dir}/go            ${install_dir}/connector
+  if [ -d "${connector_dir}/grafanaplugin/dist" ]; then
+    cp -r ${connector_dir}/grafanaplugin/dist ${install_dir}/connector/grafanaplugin
+  else
+    echo "WARNING: grafanaplugin bundled dir not found, please check if you want to use it!"
+  fi
+  if find ${connector_dir}/go -mindepth 1 -maxdepth 1 | read; then
+    cp -r ${connector_dir}/go ${install_dir}/connector
+  else
+    echo "WARNING: go connector not found, please check if want to use it!"
+  fi
+  cp -r ${connector_dir}/python        ${install_dir}/connector
   cp -r ${connector_dir}/nodejs        ${install_dir}/connector
 fi
 # Copy release note

packaging/tools/makepkg_power.sh

@@ -166,24 +166,24 @@ connector_dir="${code_dir}/connector"
 mkdir -p ${install_dir}/connector
 if [[ "$pagMode" != "lite" ]] && [[ "$cpuType" != "aarch32" ]]; then
   cp ${build_dir}/lib/*.jar      ${install_dir}/connector ||:
-  cp -r ${connector_dir}/grafanaplugin ${install_dir}/connector/
+
+  if [ -d "${connector_dir}/grafanaplugin/dist" ]; then
+    cp -r ${connector_dir}/grafanaplugin/dist ${install_dir}/connector/grafanaplugin
+  else
+    echo "WARNING: grafanaplugin bundled dir not found, please check if want to use it!"
+  fi
+  if find ${connector_dir}/go -mindepth 1 -maxdepth 1 | read; then
+    cp -r ${connector_dir}/go ${install_dir}/connector
+  else
+    echo "WARNING: go connector not found, please check if want to use it!"
+  fi
   cp -r ${connector_dir}/python  ${install_dir}/connector/
-  cp -r ${connector_dir}/go      ${install_dir}/connector
   
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/cinterface.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/cinterface.py
+  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/cinterface.py
   
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/subscription.py
-  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/subscription.py
+  sed -i '/password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/subscription.py
   
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python2/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/linux/python3/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python2/taos/connection.py
-  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/windows/python3/taos/connection.py
+  sed -i '/self._password/ {s/taosdata/powerdb/g}'  ${install_dir}/connector/python/taos/connection.py
 fi
 # Copy release note
 # cp ${script_dir}/release_note ${install_dir}

packaging/tools/post.sh

@@ -405,6 +405,7 @@ function install_service_on_systemd() {
     ${csudo} bash -c "echo 'Type=simple'                        >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStart=/usr/bin/taosd'           >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'ExecStartPre=/usr/local/taos/bin/startPre.sh'           >> ${taosd_service_config}"
+    ${csudo} bash -c "echo 'TimeoutStopSec=1000000s'            >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNOFILE=infinity'               >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitNPROC=infinity'                >> ${taosd_service_config}"
     ${csudo} bash -c "echo 'LimitCORE=infinity'                 >> ${taosd_service_config}"

snap/snapcraft.yaml

@@ -1,6 +1,7 @@
 name: tdengine
 base: core18
-version: '2.0.20.0'
+
+version: '2.1.0.0'
 icon: snap/gui/t-dengine.svg
 summary: an open-source big data platform designed and optimized for IoT. 
 description: |
@@ -72,7 +73,7 @@ parts:
       - usr/bin/taosd
       - usr/bin/taos
       - usr/bin/taosdemo
-      - usr/lib/libtaos.so.2.0.20.0
+      - usr/lib/libtaos.so.2.1.0.0
       - usr/lib/libtaos.so.1
       - usr/lib/libtaos.so
 

src/client/inc/tscSubquery.h

@@ -48,6 +48,8 @@ void tscLockByThread(int64_t *lockedBy);
 
 void tscUnlockByThread(int64_t *lockedBy);
 
+int tsInsertInitialCheck(SSqlObj *pSql);
+
 #ifdef __cplusplus
 }
 #endif

src/client/inc/tscUtil.h

@@ -20,7 +20,7 @@
 extern "C" {
 #endif
 
-#include <tsched.h>
+#include "tsched.h"
 #include "exception.h"
 #include "os.h"
 #include "qExtbuffer.h"
@@ -170,9 +170,12 @@ void tscFieldInfoCopy(SFieldInfo* pFieldInfo, const SFieldInfo* pSrc, const SArr
 
 static FORCE_INLINE int32_t tscNumOfFields(SQueryInfo* pQueryInfo) { return pQueryInfo->fieldsInfo.numOfOutput; }
 
-int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2);
+int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2, int32_t *diffSize);
 void tscInsertPrimaryTsSourceColumn(SQueryInfo* pQueryInfo, uint64_t uid);
 
+int32_t tscFieldInfoSetSize(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2);
+void addExprParams(SSqlExpr* pExpr, char* argument, int32_t type, int32_t bytes);
+
 int32_t   tscGetResRowLength(SArray* pExprList);
 
 SExprInfo* tscExprInsert(SQueryInfo* pQueryInfo, int32_t index, int16_t functionId, SColumnIndex* pColIndex, int16_t type,
@@ -316,7 +319,7 @@ STableMeta* createSuperTableMeta(STableMetaMsg* pChild);
 uint32_t tscGetTableMetaSize(STableMeta* pTableMeta);
 CChildTableMeta* tscCreateChildMeta(STableMeta* pTableMeta);
 uint32_t tscGetTableMetaMaxSize();
-int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name);
+int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name, void* buf);
 STableMeta* tscTableMetaDup(STableMeta* pTableMeta);
 int32_t tscCreateQueryFromQueryInfo(SQueryInfo* pQueryInfo, SQueryAttr* pQueryAttr, void* addr);
 

src/client/inc/tschemautil.h

@@ -21,8 +21,8 @@ extern "C" {
 #endif
 
 #include "taosmsg.h"
-#include "tstoken.h"
 #include "tsclient.h"
+#include "ttoken.h"
 
 /**
  * get the number of tags of this table

src/client/inc/tsclient.h

@@ -84,6 +84,7 @@ typedef struct STableMeta {
 
 typedef struct STableMetaInfo {
   STableMeta   *pTableMeta;      // table meta, cached in client side and acquired by name
+  uint32_t       tableMetaSize;
   SVgroupsInfo *vgroupList;
   SArray       *pVgroupTables;   // SArray<SVgroupTableInfo>
   
@@ -154,13 +155,12 @@ typedef struct STagCond {
 
 typedef struct SParamInfo {
   int32_t  idx;
-  char     type;
+  uint8_t  type;
   uint8_t  timePrec;
   int16_t  bytes;
   uint32_t offset;
 } SParamInfo;
 
-
 typedef struct SBoundColumn {
   bool    hasVal;  // denote if current column has bound or not
   int32_t offset;  // all column offset value
@@ -386,6 +386,7 @@ typedef struct SSqlObj {
   tsem_t           rspSem;
   SSqlCmd          cmd;
   SSqlRes          res;
+  bool             isBind;
   
   SSubqueryState   subState;
   struct SSqlObj **pSubs;

src/client/jni/com_taosdata_jdbc_TSDBJNIConnector.h

@@ -100,7 +100,7 @@ JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getResultSetImp
 /*
  * Class:     com_taosdata_jdbc_TSDBJNIConnector
  * Method:    isUpdateQueryImp
- * Signature: (J)J
+ * Signature: (JJ)I
  */
 JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_isUpdateQueryImp
   (JNIEnv *env, jobject jobj, jlong con, jlong tres);
@@ -185,6 +185,44 @@ JNIEXPORT void JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_unsubscribeImp
 JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_validateCreateTableSqlImp
   (JNIEnv *, jobject, jlong, jbyteArray);
 
+/*
+ * Class:     com_taosdata_jdbc_TSDBJNIConnector
+ * Method:    prepareStmtImp
+ * Signature: ([BJ)I
+ */
+JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_prepareStmtImp
+  (JNIEnv *, jobject, jbyteArray, jlong);
+
+/*
+ * Class:     com_taosdata_jdbc_TSDBJNIConnector
+ * Method:    setBindTableNameImp
+ * Signature: (JLjava/lang/String;J)I
+ */
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_setBindTableNameImp
+  (JNIEnv *, jobject, jlong, jstring, jlong);
+
+/*
+ * Class:     com_taosdata_jdbc_TSDBJNIConnector
+ * Method:    bindColDataImp
+ * Signature: (J[B[B[BIIIIJ)J
+ */
+JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_bindColDataImp
+(JNIEnv *, jobject, jlong, jbyteArray, jbyteArray, jbyteArray, jint, jint, jint, jint, jlong);
+
+/*
+ * Class:     com_taosdata_jdbc_TSDBJNIConnector
+ * Method:    executeBatchImp
+ * Signature: (JJ)I
+ */
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeBatchImp(JNIEnv *env, jobject jobj, jlong stmt, jlong con);
+
+/*
+ * Class:     com_taosdata_jdbc_TSDBJNIConnector
+ * Method:    executeBatchImp
+ * Signature: (JJ)I
+ */
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_closeStmt(JNIEnv *env, jobject jobj, jlong stmt, jlong con);
+
 #ifdef __cplusplus
 }
 #endif

src/client/src/TSDBJNIConnector.c

@@ -688,3 +688,193 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TDDBJNIConnector_getResultTimePrec
 
   return taos_result_precision(result);
 }
+
+JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_prepareStmtImp(JNIEnv *env, jobject jobj, jbyteArray jsql, jlong con) {
+  TAOS *tscon = (TAOS *)con;
+  if (tscon == NULL) {
+    jniError("jobj:%p, connection already closed", jobj);
+    return JNI_CONNECTION_NULL;
+  }
+
+  if (jsql == NULL) {
+    jniError("jobj:%p, conn:%p, empty sql string", jobj, tscon);
+    return JNI_SQL_NULL;
+  }
+
+  jsize len = (*env)->GetArrayLength(env, jsql);
+
+  char *str = (char *) calloc(1, sizeof(char) * (len + 1));
+  if (str == NULL) {
+    jniError("jobj:%p, conn:%p, alloc memory failed", jobj, tscon);
+    return JNI_OUT_OF_MEMORY;
+  }
+
+  (*env)->GetByteArrayRegion(env, jsql, 0, len, (jbyte *)str);
+  if ((*env)->ExceptionCheck(env)) {
+    // todo handle error
+  }
+
+  TAOS_STMT* pStmt = taos_stmt_init(tscon);
+  int32_t code = taos_stmt_prepare(pStmt, str, len);
+  if (code != TSDB_CODE_SUCCESS) {
+    jniError("jobj:%p, conn:%p, code:%s", jobj, tscon, tstrerror(code));
+    return JNI_TDENGINE_ERROR;
+  }
+
+  free(str);
+  return (jlong) pStmt;
+}
+
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_setBindTableNameImp(JNIEnv *env, jobject jobj, jlong stmt, jstring jname, jlong conn) {
+  TAOS *tsconn = (TAOS *)conn;
+  if (tsconn == NULL) {
+    jniError("jobj:%p, connection already closed", jobj);
+    return JNI_CONNECTION_NULL;
+  }
+
+  TAOS_STMT* pStmt = (TAOS_STMT*) stmt;
+  if (pStmt == NULL) {
+    jniError("jobj:%p, conn:%p, invalid stmt handle", jobj, tsconn);
+    return JNI_SQL_NULL;
+  }
+
+  const char *name = (*env)->GetStringUTFChars(env, jname, NULL);
+
+  int32_t code = taos_stmt_set_tbname((void*)stmt, name);
+  if (code != TSDB_CODE_SUCCESS) {
+    (*env)->ReleaseStringUTFChars(env, jname, name);
+
+    jniError("jobj:%p, conn:%p, code:%s", jobj, tsconn, tstrerror(code));
+    return JNI_TDENGINE_ERROR;
+  }
+
+  jniDebug("jobj:%p, conn:%p, set stmt bind table name:%s", jobj, tsconn, name);
+
+  (*env)->ReleaseStringUTFChars(env, jname, name);
+  return JNI_SUCCESS;
+}
+
+JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_bindColDataImp(JNIEnv *env, jobject jobj, jlong stmt,
+    jbyteArray colDataList, jbyteArray lengthList, jbyteArray nullList, jint dataType, jint dataBytes, jint numOfRows, jint colIndex, jlong con) {
+  TAOS *tscon = (TAOS *)con;
+  if (tscon == NULL) {
+    jniError("jobj:%p, connection already closed", jobj);
+    return JNI_CONNECTION_NULL;
+  }
+
+  TAOS_STMT* pStmt = (TAOS_STMT*) stmt;
+  if (pStmt == NULL) {
+    jniError("jobj:%p, conn:%p, invalid stmt", jobj, tscon);
+    return JNI_SQL_NULL;
+  }
+
+  // todo refactor
+  jsize len = (*env)->GetArrayLength(env, colDataList);
+  char *colBuf = (char *)calloc(1, len);
+  (*env)->GetByteArrayRegion(env, colDataList, 0, len, (jbyte *)colBuf);
+  if ((*env)->ExceptionCheck(env)) {
+    // todo handle error
+  }
+
+  len = (*env)->GetArrayLength(env, lengthList);
+  char *lengthArray = (char*) calloc(1, len);
+  (*env)->GetByteArrayRegion(env, lengthList, 0, len, (jbyte*) lengthArray);
+  if ((*env)->ExceptionCheck(env)) {
+  }
+
+  len = (*env)->GetArrayLength(env, nullList);
+  char *nullArray = (char*) calloc(1, len);
+  (*env)->GetByteArrayRegion(env, nullList, 0, len, (jbyte*) nullArray);
+  if ((*env)->ExceptionCheck(env)) {
+  }
+
+  // bind multi-rows with only one invoke.
+  TAOS_MULTI_BIND* b = calloc(1, sizeof(TAOS_MULTI_BIND));
+
+  b->num           = numOfRows;
+  b->buffer_type   = dataType;  // todo check data type
+  b->buffer_length = IS_VAR_DATA_TYPE(dataType)? dataBytes:tDataTypes[dataType].bytes;
+  b->is_null       = nullArray;
+  b->buffer        = colBuf;
+  b->length        = (int32_t*)lengthArray;
+
+  // set the length and is_null array
+  switch(dataType) {
+    case TSDB_DATA_TYPE_INT:
+    case TSDB_DATA_TYPE_TINYINT:
+    case TSDB_DATA_TYPE_SMALLINT:
+    case TSDB_DATA_TYPE_TIMESTAMP:
+    case TSDB_DATA_TYPE_BIGINT: {
+      int32_t bytes = tDataTypes[dataType].bytes;
+      for(int32_t i = 0; i < numOfRows; ++i) {
+        b->length[i]  = bytes;
+      }
+      break;
+    }
+
+    case TSDB_DATA_TYPE_NCHAR:
+    case TSDB_DATA_TYPE_BINARY: {
+      // do nothing
+    }
+  }
+
+  int32_t code = taos_stmt_bind_single_param_batch(pStmt, b, colIndex);
+  tfree(b->length);
+  tfree(b->buffer);
+  tfree(b->is_null);
+  tfree(b);
+
+  if (code != TSDB_CODE_SUCCESS) {
+    jniError("jobj:%p, conn:%p, code:%s", jobj, tscon, tstrerror(code));
+    return JNI_TDENGINE_ERROR;
+  }
+
+  return JNI_SUCCESS;
+}
+
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeBatchImp(JNIEnv *env, jobject jobj, jlong stmt, jlong con) {
+  TAOS *tscon = (TAOS *)con;
+  if (tscon == NULL) {
+    jniError("jobj:%p, connection already closed", jobj);
+    return JNI_CONNECTION_NULL;
+  }
+
+  TAOS_STMT *pStmt = (TAOS_STMT*) stmt;
+  if (pStmt == NULL) {
+    jniError("jobj:%p, conn:%p, invalid stmt", jobj, tscon);
+    return JNI_SQL_NULL;
+  }
+
+  taos_stmt_add_batch(pStmt);
+  int32_t code = taos_stmt_execute(pStmt);
+  if (code != TSDB_CODE_SUCCESS) {
+    jniError("jobj:%p, conn:%p, code:%s", jobj, tscon, tstrerror(code));
+    return JNI_TDENGINE_ERROR;
+  }
+
+  jniDebug("jobj:%p, conn:%p, batch execute", jobj, tscon);
+  return JNI_SUCCESS;
+}
+
+JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_closeStmt(JNIEnv *env, jobject jobj, jlong stmt, jlong con) {
+  TAOS *tscon = (TAOS *)con;
+  if (tscon == NULL) {
+    jniError("jobj:%p, connection already closed", jobj);
+    return JNI_CONNECTION_NULL;
+  }
+
+  TAOS_STMT *pStmt = (TAOS_STMT*) stmt;
+  if (pStmt == NULL) {
+    jniError("jobj:%p, conn:%p, invalid stmt", jobj, tscon);
+    return JNI_SQL_NULL;
+  }
+
+  int32_t code = taos_stmt_close(pStmt);
+  if (code != TSDB_CODE_SUCCESS) {
+    jniError("jobj:%p, conn:%p, code:%s", jobj, tscon, tstrerror(code));
+    return JNI_TDENGINE_ERROR;
+  }
+
+  jniDebug("jobj:%p, conn:%p, stmt closed", jobj, tscon);
+  return JNI_SUCCESS;
+}

src/client/src/tscLocal.c

@@ -326,6 +326,7 @@ TAOS_ROW tscFetchRow(void *param) {
        pCmd->command == TSDB_SQL_FETCH ||
        pCmd->command == TSDB_SQL_SHOW ||
        pCmd->command == TSDB_SQL_SHOW_CREATE_TABLE ||
+       pCmd->command == TSDB_SQL_SHOW_CREATE_STABLE ||
        pCmd->command == TSDB_SQL_SHOW_CREATE_DATABASE ||
        pCmd->command == TSDB_SQL_SELECT ||
        pCmd->command == TSDB_SQL_DESCRIBE_TABLE ||
@@ -679,6 +680,9 @@ static int32_t tscProcessShowCreateTable(SSqlObj *pSql) {
   assert(pTableMetaInfo->pTableMeta != NULL);
 
   const char* tableName = tNameGetTableName(&pTableMetaInfo->name);
+  if (pSql->cmd.command == TSDB_SQL_SHOW_CREATE_STABLE && !UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo))  {
+    return TSDB_CODE_TSC_INVALID_VALUE;
+  }
 
   char *result = (char *)calloc(1, TSDB_MAX_BINARY_LEN);
   int32_t code = TSDB_CODE_SUCCESS;
@@ -709,13 +713,12 @@ static int32_t tscProcessShowCreateDatabase(SSqlObj *pSql) {
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }  
 
-  SCreateBuilder *param = (SCreateBuilder *)malloc(sizeof(SCreateBuilder));    
+  SCreateBuilder *param = (SCreateBuilder *)calloc(1, sizeof(SCreateBuilder));    
   if (param == NULL) {
     free(pInterSql);
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }
-
-  strncpy(param->buf, tNameGetTableName(&pTableMetaInfo->name), TSDB_TABLE_NAME_LEN);
+  tNameGetDbName(&pTableMetaInfo->name, param->buf);
 
   param->pParentSql = pSql;
   param->pInterSql  = pInterSql;
@@ -907,7 +910,7 @@ int tscProcessLocalCmd(SSqlObj *pSql) {
      */
     pRes->qId = 0x1;
     pRes->numOfRows = 0;
-  } else if (pCmd->command == TSDB_SQL_SHOW_CREATE_TABLE) {
+  } else if (pCmd->command == TSDB_SQL_SHOW_CREATE_TABLE || pCmd->command == TSDB_SQL_SHOW_CREATE_STABLE) {
     pRes->code = tscProcessShowCreateTable(pSql); 
   } else if (pCmd->command == TSDB_SQL_SHOW_CREATE_DATABASE) {
     pRes->code = tscProcessShowCreateDatabase(pSql); 

src/client/src/tscParseInsert.c

@@ -29,8 +29,7 @@
 #include "taosdef.h"
 
 #include "tscLog.h"
-#include "tscSubquery.h"
-#include "tstoken.h"
+#include "ttoken.h"
 
 #include "tdataformat.h"
 
@@ -68,7 +67,7 @@ int tsParseTime(SStrToken *pToken, int64_t *time, char **next, char *error, int1
   } else if (strncmp(pToken->z, "0", 1) == 0 && pToken->n == 1) {
     // do nothing
   } else if (pToken->type == TK_INTEGER) {
-    useconds = tsosStr2int64(pToken->z);
+    useconds = taosStr2int64(pToken->z);
   } else {
     // strptime("2001-11-12 18:31:01", "%Y-%m-%d %H:%M:%S", &tm);
     if (taosParseTime(pToken->z, time, pToken->n, timePrec, tsDaylight) != TSDB_CODE_SUCCESS) {
@@ -386,7 +385,7 @@ int32_t tsParseOneColumn(SSchema *pSchema, SStrToken *pToken, char *payload, cha
  * The server time/client time should not be mixed up in one sql string
  * Do not employ sort operation is not involved if server time is used.
  */
-static int32_t tsCheckTimestamp(STableDataBlocks *pDataBlocks, const char *start) {
+int32_t tsCheckTimestamp(STableDataBlocks *pDataBlocks, const char *start) {
   // once the data block is disordered, we do NOT keep previous timestamp any more
   if (!pDataBlocks->ordered) {
     return TSDB_CODE_SUCCESS;
@@ -411,6 +410,7 @@ static int32_t tsCheckTimestamp(STableDataBlocks *pDataBlocks, const char *start
 
   if (k <= pDataBlocks->prevTS && (pDataBlocks->tsSource == TSDB_USE_CLI_TS)) {
     pDataBlocks->ordered = false;
+    tscWarn("NOT ordered input timestamp");
   }
 
   pDataBlocks->prevTS = k;
@@ -463,23 +463,24 @@ int tsParseOneRow(char **str, STableDataBlocks *pDataBlocks, SSqlCmd *pCmd, int1
     // Remove quotation marks
     if (TK_STRING == sToken.type) {
       // delete escape character: \\, \', \"
-      char    delim = sToken.z[0];
+      char delim = sToken.z[0];
+
       int32_t cnt = 0;
       int32_t j = 0;
       for (uint32_t k = 1; k < sToken.n - 1; ++k) {
-        if (sToken.z[k] == delim || sToken.z[k] == '\\') {
-          if (sToken.z[k + 1] == delim) {
-            cnt++;
+        if (sToken.z[k] == '\\' || (sToken.z[k] == delim && sToken.z[k + 1] == delim)) {
             tmpTokenBuf[j] = sToken.z[k + 1];
-            j++;
-            k++;
-            continue;
-          }
+
+          cnt++;
+          j++;
+          k++;
+          continue;
         }
 
         tmpTokenBuf[j] = sToken.z[k];
         j++;
       }
+
       tmpTokenBuf[j] = 0;
       sToken.z = tmpTokenBuf;
       sToken.n -= 2 + cnt;
@@ -576,13 +577,14 @@ int32_t tsParseValues(char **str, STableDataBlocks *pDataBlock, int maxRows, SSq
 
     index = 0;
     sToken = tStrGetToken(*str, &index, false);
-    *str += index;
     if (sToken.n == 0 || sToken.type != TK_RP) {
       tscSQLSyntaxErrMsg(pCmd->payload, ") expected", *str);
       code = TSDB_CODE_TSC_SQL_SYNTAX_ERROR;
-      return -1;
+      return code;
     }
     
+    *str += index;
+
     (*numOfRows)++;
   }
 
@@ -693,6 +695,8 @@ void tscSortRemoveDataBlockDupRows(STableDataBlocks *dataBuf) {
     pBlocks->numOfRows = i + 1;
     dataBuf->size = sizeof(SSubmitBlk) + dataBuf->rowSize * pBlocks->numOfRows;
   }
+
+  dataBuf->prevTS = INT64_MIN;
 }
 
 static int32_t doParseInsertStatement(SSqlCmd* pCmd, char **str, STableDataBlocks* dataBuf, int32_t *totalNum) {
@@ -705,15 +709,10 @@ static int32_t doParseInsertStatement(SSqlCmd* pCmd, char **str, STableDataBlock
   }
 
   code = TSDB_CODE_TSC_INVALID_SQL;
-  char  *tmpTokenBuf = calloc(1, 16*1024);  // used for deleting Escape character: \\, \', \"
-  if (NULL == tmpTokenBuf) {
-    return TSDB_CODE_TSC_OUT_OF_MEMORY;
-  }
+  char tmpTokenBuf[16*1024] = {0};  // used for deleting Escape character: \\, \', \"
 
   int32_t numOfRows = 0;
   code = tsParseValues(str, dataBuf, maxNumOfRows, pCmd, &numOfRows, tmpTokenBuf);
-
-  free(tmpTokenBuf);
   if (code != TSDB_CODE_SUCCESS) {
     return code;
   }
@@ -934,6 +933,42 @@ static int32_t tscCheckIfCreateTable(char **sqlstr, SSqlObj *pSql, char** boundC
       return tscSQLSyntaxErrMsg(pCmd->payload, ") expected", sToken.z);
     }
 
+    /* parse columns after super table tags values.
+     * insert into table_name using super_table(tag_name1, tag_name2) tags(tag_val1, tag_val2)
+     * (normal_col1, normal_col2) values(normal_col1_val, normal_col2_val);
+     * */
+    index = 0;
+    sToken = tStrGetToken(sql, &index, false);
+    sql += index;
+    int numOfColsAfterTags = 0;
+    if (sToken.type == TK_LP) {
+      if (*boundColumn != NULL) {
+        return tscSQLSyntaxErrMsg(pCmd->payload, "bind columns again", sToken.z);
+      } else {
+        *boundColumn = &sToken.z[0];
+      }
+
+      while (1) {
+        index = 0;
+        sToken = tStrGetToken(sql, &index, false);
+
+        if (sToken.type == TK_RP) {
+          break;
+        }
+
+        sql += index;
+        ++numOfColsAfterTags;
+      }
+
+      if (numOfColsAfterTags == 0 && (*boundColumn) != NULL) {
+        return TSDB_CODE_TSC_INVALID_SQL;
+      }
+
+      sToken = tStrGetToken(sql, &index, false);
+    }
+
+    sql = sToken.z;
+
     if (tscValidateName(&tableToken) != TSDB_CODE_SUCCESS) {
       return tscInvalidSQLErrMsg(pCmd->payload, "invalid table name", *sqlstr);
     }
@@ -975,7 +1010,7 @@ int validateTableName(char *tblName, int len, SStrToken* psTblToken) {
 
   psTblToken->n    = len;
   psTblToken->type = TK_ID;
-  tSQLGetToken(psTblToken->z, &psTblToken->type);
+  tGetToken(psTblToken->z, &psTblToken->type);
 
   return tscValidateName(psTblToken);
 }
@@ -1262,7 +1297,7 @@ int tsParseInsertSql(SSqlObj *pSql) {
     goto _clean;
   }
 
-  if (taosHashGetSize(pCmd->pTableBlockHashList) > 0) { // merge according to vgId
+  if ((pCmd->insertType != TSDB_QUERY_TYPE_STMT_INSERT) && taosHashGetSize(pCmd->pTableBlockHashList) > 0) { // merge according to vgId
     if ((code = tscMergeTableDataBlocks(pSql, true)) != TSDB_CODE_SUCCESS) {
       goto _clean;
     }

src/client/src/tscPrepare.c

@@ -24,6 +24,7 @@
 #include "tscSubquery.h"
 
 int tsParseInsertSql(SSqlObj *pSql);
+int32_t tsCheckTimestamp(STableDataBlocks *pDataBlocks, const char *start);
 
 ////////////////////////////////////////////////////////////////////////////////
 // functions for normal statement preparation
@@ -43,10 +44,32 @@ typedef struct SNormalStmt {
   tVariant*        params;
 } SNormalStmt;
 
+typedef struct SMultiTbStmt {
+  bool      nameSet;
+  uint64_t  currentUid;
+  uint32_t  tbNum;
+  SStrToken tbname;
+  SHashObj *pTableHash;
+  SHashObj *pTableBlockHashList;     // data block for each table
+} SMultiTbStmt;
+
+typedef enum {
+  STMT_INIT = 1,
+  STMT_PREPARE,
+  STMT_SETTBNAME,
+  STMT_BIND,
+  STMT_BIND_COL,
+  STMT_ADD_BATCH,
+  STMT_EXECUTE
+} STMT_ST;
+
 typedef struct STscStmt {
   bool isInsert;
+  bool multiTbInsert;
+  int16_t  last;
   STscObj* taos;
   SSqlObj* pSql;
+  SMultiTbStmt mtb;
   SNormalStmt normal;
 } STscStmt;
 
@@ -135,7 +158,7 @@ static int normalStmtBindParam(STscStmt* stmt, TAOS_BIND* bind) {
         break;
 
       default:
-        tscDebug("param %d: type mismatch or invalid", i);
+        tscDebug("0x%"PRIx64" bind column%d: type mismatch or invalid", stmt->pSql->self, i);
         return TSDB_CODE_TSC_INVALID_VALUE;
     }
   }
@@ -151,7 +174,7 @@ static int normalStmtPrepare(STscStmt* stmt) {
 
   while (sql[i] != 0) {
     SStrToken token = {0};
-    token.n = tSQLGetToken(sql + i, &token.type);
+    token.n = tGetToken(sql + i, &token.type);
 
     if (token.type == TK_QUESTION) {
       sql[i] = 0;
@@ -253,14 +276,69 @@ static char* normalStmtBuildSql(STscStmt* stmt) {
   return taosStringBuilderGetResult(&sb, NULL);
 }
 
+static int fillColumnsNull(STableDataBlocks* pBlock, int32_t rowNum) {
+  SParsedDataColInfo* spd = &pBlock->boundColumnInfo;
+  int32_t offset = 0;
+  SSchema *schema = (SSchema*)pBlock->pTableMeta->schema;
+
+  for (int32_t i = 0; i < spd->numOfCols; ++i) {
+    if (!spd->cols[i].hasVal) {  // current column do not have any value to insert, set it to null
+      for (int32_t n = 0; n < rowNum; ++n) {
+        char *ptr = pBlock->pData + sizeof(SSubmitBlk) + pBlock->rowSize * n + offset;
+
+        if (schema[i].type == TSDB_DATA_TYPE_BINARY) {
+          varDataSetLen(ptr, sizeof(int8_t));
+          *(uint8_t*) varDataVal(ptr) = TSDB_DATA_BINARY_NULL;
+        } else if (schema[i].type == TSDB_DATA_TYPE_NCHAR) {
+          varDataSetLen(ptr, sizeof(int32_t));
+          *(uint32_t*) varDataVal(ptr) = TSDB_DATA_NCHAR_NULL;
+        } else {
+          setNull(ptr, schema[i].type, schema[i].bytes);
+        }
+      }
+    }
+
+    offset += schema[i].bytes;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t fillTablesColumnsNull(SSqlObj* pSql) {
+  SSqlCmd* pCmd = &pSql->cmd;
+
+  STableDataBlocks** p = taosHashIterate(pCmd->pTableBlockHashList, NULL);
+
+  STableDataBlocks* pOneTableBlock = *p;
+  while(pOneTableBlock) {
+    SSubmitBlk* pBlocks = (SSubmitBlk*) pOneTableBlock->pData;
+    if (pBlocks->numOfRows > 0 && pOneTableBlock->boundColumnInfo.numOfBound < pOneTableBlock->boundColumnInfo.numOfCols) {
+      fillColumnsNull(pOneTableBlock, pBlocks->numOfRows);
+    }
+
+    p = taosHashIterate(pCmd->pTableBlockHashList, p);
+    if (p == NULL) {
+      break;
+    }
+
+    pOneTableBlock = *p;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // functions for insertion statement preparation
-static int doBindParam(char* data, SParamInfo* param, TAOS_BIND* bind) {
+static int doBindParam(STableDataBlocks* pBlock, char* data, SParamInfo* param, TAOS_BIND* bind, int32_t colNum) {
   if (bind->is_null != NULL && *(bind->is_null)) {
     setNull(data + param->offset, param->type, param->bytes);
     return TSDB_CODE_SUCCESS;
   }
 
+#if 0
   if (0) {
     // allow user bind param data with different type
     union {
@@ -641,6 +719,7 @@ static int doBindParam(char* data, SParamInfo* param, TAOS_BIND* bind) {
       }
     }
   }
+#endif
 
   if (bind->buffer_type != param->type) {
     return TSDB_CODE_TSC_INVALID_VALUE;
@@ -690,29 +769,106 @@ static int doBindParam(char* data, SParamInfo* param, TAOS_BIND* bind) {
   }
 
   memcpy(data + param->offset, bind->buffer, size);
+  if (param->offset == 0) {
+    if (tsCheckTimestamp(pBlock, data + param->offset) != TSDB_CODE_SUCCESS) {
+      tscError("invalid timestamp");
+      return TSDB_CODE_TSC_INVALID_VALUE;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+static int doBindBatchParam(STableDataBlocks* pBlock, SParamInfo* param, TAOS_MULTI_BIND* bind, int32_t rowNum) {
+  if (bind->buffer_type != param->type || !isValidDataType(param->type)) {
+    return TSDB_CODE_TSC_INVALID_VALUE;
+  }
+
+  if (IS_VAR_DATA_TYPE(param->type) && bind->length == NULL) {
+    tscError("BINARY/NCHAR no length");
+    return TSDB_CODE_TSC_INVALID_VALUE;
+  }
+
+  for (int i = 0; i < bind->num; ++i) {
+    char* data = pBlock->pData + sizeof(SSubmitBlk) + pBlock->rowSize * (rowNum + i);
+
+    if (bind->is_null != NULL && bind->is_null[i]) {
+      setNull(data + param->offset, param->type, param->bytes);
+      continue;
+    }
+
+    if (!IS_VAR_DATA_TYPE(param->type)) {
+      memcpy(data + param->offset, (char *)bind->buffer + bind->buffer_length * i, tDataTypes[param->type].bytes);
+
+      if (param->offset == 0) {
+        if (tsCheckTimestamp(pBlock, data + param->offset) != TSDB_CODE_SUCCESS) {
+          tscError("invalid timestamp");
+          return TSDB_CODE_TSC_INVALID_VALUE;
+        }
+      }
+    } else if (param->type == TSDB_DATA_TYPE_BINARY) {
+      if (bind->length[i] > (uintptr_t)param->bytes) {
+        tscError("binary length too long, ignore it, max:%d, actual:%d", param->bytes, (int32_t)bind->length[i]);
+        return TSDB_CODE_TSC_INVALID_VALUE;
+      }
+      int16_t bsize = (short)bind->length[i];
+      STR_WITH_SIZE_TO_VARSTR(data + param->offset, (char *)bind->buffer + bind->buffer_length * i, bsize);
+    } else if (param->type == TSDB_DATA_TYPE_NCHAR) {
+      if (bind->length[i] > (uintptr_t)param->bytes) {
+        tscError("nchar string length too long, ignore it, max:%d, actual:%d", param->bytes, (int32_t)bind->length[i]);
+        return TSDB_CODE_TSC_INVALID_VALUE;
+      }
+
+      int32_t output = 0;
+      if (!taosMbsToUcs4((char *)bind->buffer + bind->buffer_length * i, bind->length[i], varDataVal(data + param->offset), param->bytes - VARSTR_HEADER_SIZE, &output)) {
+        tscError("convert nchar string to UCS4_LE failed:%s", (char*)((char *)bind->buffer + bind->buffer_length * i));
+        return TSDB_CODE_TSC_INVALID_VALUE;
+      }
+
+      varDataSetLen(data + param->offset, output);
+    }
+  }
+
   return TSDB_CODE_SUCCESS;
 }
 
 static int insertStmtBindParam(STscStmt* stmt, TAOS_BIND* bind) {
   SSqlCmd* pCmd = &stmt->pSql->cmd;
-
-  STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, 0);
-
-  STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
-  if (pCmd->pTableBlockHashList == NULL) {
-    pCmd->pTableBlockHashList = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
-  }
+  STscStmt* pStmt = (STscStmt*)stmt;
 
   STableDataBlocks* pBlock = NULL;
 
-  int32_t ret =
-      tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE, sizeof(SSubmitBlk),
-                              pTableMeta->tableInfo.rowSize, &pTableMetaInfo->name, pTableMeta, &pBlock, NULL);
-  if (ret != 0) {
-    // todo handle error
+  if (pStmt->multiTbInsert) {
+    if (pCmd->pTableBlockHashList == NULL) {
+      tscError("0x%"PRIx64" Table block hash list is empty", pStmt->pSql->self);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    STableDataBlocks** t1 = (STableDataBlocks**)taosHashGet(pCmd->pTableBlockHashList, (const char*)&pStmt->mtb.currentUid, sizeof(pStmt->mtb.currentUid));
+    if (t1 == NULL) {
+      tscError("0x%"PRIx64" no table data block in hash list, uid:%" PRId64 , pStmt->pSql->self, pStmt->mtb.currentUid);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    pBlock = *t1;
+  } else {
+    STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, 0);
+
+    STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
+    if (pCmd->pTableBlockHashList == NULL) {
+      pCmd->pTableBlockHashList = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
+    }
+
+    int32_t ret =
+        tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE, sizeof(SSubmitBlk),
+                                pTableMeta->tableInfo.rowSize, &pTableMetaInfo->name, pTableMeta, &pBlock, NULL);
+    if (ret != 0) {
+      return ret;
+    }
   }
 
-  uint32_t totalDataSize = sizeof(SSubmitBlk) + pCmd->batchSize * pBlock->rowSize;
+  uint32_t totalDataSize = sizeof(SSubmitBlk) + (pCmd->batchSize + 1) * pBlock->rowSize;
   if (totalDataSize > pBlock->nAllocSize) {
     const double factor = 1.5;
 
@@ -729,9 +885,9 @@ static int insertStmtBindParam(STscStmt* stmt, TAOS_BIND* bind) {
   for (uint32_t j = 0; j < pBlock->numOfParams; ++j) {
     SParamInfo* param = &pBlock->params[j];
 
-    int code = doBindParam(data, param, &bind[param->idx]);
+    int code = doBindParam(pBlock, data, param, &bind[param->idx], 1);
     if (code != TSDB_CODE_SUCCESS) {
-      tscDebug("param %d: type mismatch or invalid", param->idx);
+      tscDebug("0x%"PRIx64" bind column %d: type mismatch or invalid", pStmt->pSql->self, param->idx);
       return code;
     }
   }
@@ -739,9 +895,134 @@ static int insertStmtBindParam(STscStmt* stmt, TAOS_BIND* bind) {
   return TSDB_CODE_SUCCESS;
 }
 
+
+static int insertStmtBindParamBatch(STscStmt* stmt, TAOS_MULTI_BIND* bind, int colIdx) {
+  SSqlCmd* pCmd = &stmt->pSql->cmd;
+  STscStmt* pStmt = (STscStmt*)stmt;
+  int rowNum = bind->num;
+
+  STableDataBlocks* pBlock = NULL;
+
+  if (pStmt->multiTbInsert) {
+    if (pCmd->pTableBlockHashList == NULL) {
+      tscError("0x%"PRIx64" Table block hash list is empty", pStmt->pSql->self);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    STableDataBlocks** t1 = (STableDataBlocks**)taosHashGet(pCmd->pTableBlockHashList, (const char*)&pStmt->mtb.currentUid, sizeof(pStmt->mtb.currentUid));
+    if (t1 == NULL) {
+      tscError("0x%"PRIx64" no table data block in hash list, uid:%" PRId64 , pStmt->pSql->self, pStmt->mtb.currentUid);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    pBlock = *t1;
+  } else {
+    STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, 0);
+
+    STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
+    if (pCmd->pTableBlockHashList == NULL) {
+      pCmd->pTableBlockHashList = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
+    }
+
+    int32_t ret =
+        tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE, sizeof(SSubmitBlk),
+                                pTableMeta->tableInfo.rowSize, &pTableMetaInfo->name, pTableMeta, &pBlock, NULL);
+    if (ret != 0) {
+      return ret;
+    }
+  }
+
+  assert(colIdx == -1 || (colIdx >= 0 && colIdx < pBlock->numOfParams));
+
+  uint32_t totalDataSize = sizeof(SSubmitBlk) + (pCmd->batchSize + rowNum) * pBlock->rowSize;
+  if (totalDataSize > pBlock->nAllocSize) {
+    const double factor = 1.5;
+
+    void* tmp = realloc(pBlock->pData, (uint32_t)(totalDataSize * factor));
+    if (tmp == NULL) {
+      return TSDB_CODE_TSC_OUT_OF_MEMORY;
+    }
+
+    pBlock->pData = (char*)tmp;
+    pBlock->nAllocSize = (uint32_t)(totalDataSize * factor);
+  }
+
+  if (colIdx == -1) {
+    for (uint32_t j = 0; j < pBlock->numOfParams; ++j) {
+      SParamInfo* param = &pBlock->params[j];
+      if (bind[param->idx].num != rowNum) {
+        tscError("0x%"PRIx64" param %d: num[%d:%d] not match", pStmt->pSql->self, param->idx, rowNum, bind[param->idx].num);
+        return TSDB_CODE_TSC_INVALID_VALUE;
+      }
+
+      int code = doBindBatchParam(pBlock, param, &bind[param->idx], pCmd->batchSize);
+      if (code != TSDB_CODE_SUCCESS) {
+        tscError("0x%"PRIx64" bind column %d: type mismatch or invalid", pStmt->pSql->self, param->idx);
+        return code;
+      }
+    }
+
+    pCmd->batchSize += rowNum - 1;
+  } else {
+    SParamInfo* param = &pBlock->params[colIdx];
+
+    int code = doBindBatchParam(pBlock, param, bind, pCmd->batchSize);
+    if (code != TSDB_CODE_SUCCESS) {
+      tscError("0x%"PRIx64" bind column %d: type mismatch or invalid", pStmt->pSql->self, param->idx);
+      return code;
+    }
+
+    if (colIdx == (pBlock->numOfParams - 1)) {
+      pCmd->batchSize += rowNum - 1;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+static int insertStmtUpdateBatch(STscStmt* stmt) {
+  SSqlObj* pSql = stmt->pSql;
+  SSqlCmd* pCmd = &pSql->cmd;
+  STableDataBlocks* pBlock = NULL;
+
+  if (pCmd->batchSize > INT16_MAX) {
+    tscError("too many record:%d", pCmd->batchSize);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (taosHashGetSize(pCmd->pTableBlockHashList) == 0) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  STableDataBlocks** t1 = (STableDataBlocks**)taosHashGet(pCmd->pTableBlockHashList, (const char*)&stmt->mtb.currentUid, sizeof(stmt->mtb.currentUid));
+  if (t1 == NULL) {
+    tscError("0x%"PRIx64" no table data block in hash list, uid:%" PRId64 , pSql->self, stmt->mtb.currentUid);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  pBlock = *t1;
+
+  STableMeta* pTableMeta = pBlock->pTableMeta;
+
+  pBlock->size = sizeof(SSubmitBlk) + pCmd->batchSize * pBlock->rowSize;
+  SSubmitBlk* pBlk = (SSubmitBlk*) pBlock->pData;
+  pBlk->numOfRows = pCmd->batchSize;
+  pBlk->dataLen = 0;
+  pBlk->uid = pTableMeta->id.uid;
+  pBlk->tid = pTableMeta->id.tid;
+
+  return TSDB_CODE_SUCCESS;
+}
+
 static int insertStmtAddBatch(STscStmt* stmt) {
   SSqlCmd* pCmd = &stmt->pSql->cmd;
   ++pCmd->batchSize;
+
+  if (stmt->multiTbInsert) {
+    return insertStmtUpdateBatch(stmt);
+  }
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -798,6 +1079,8 @@ static int insertStmtExecute(STscStmt* stmt) {
   pBlk->uid = pTableMeta->id.uid;
   pBlk->tid = pTableMeta->id.tid;
 
+  fillTablesColumnsNull(stmt->pSql);
+
   int code = tscMergeTableDataBlocks(stmt->pSql, false);
   if (code != TSDB_CODE_SUCCESS) {
     return code;
@@ -834,6 +1117,88 @@ static int insertStmtExecute(STscStmt* stmt) {
   return pSql->res.code;
 }
 
+static void insertBatchClean(STscStmt* pStmt) {
+  SSqlCmd *pCmd = &pStmt->pSql->cmd;
+  SSqlObj *pSql = pStmt->pSql;
+  int32_t size = taosHashGetSize(pCmd->pTableBlockHashList);
+
+  // data block reset
+  pCmd->batchSize = 0;
+
+  for(int32_t i = 0; i < size; ++i) {
+    if (pCmd->pTableNameList && pCmd->pTableNameList[i]) {
+      tfree(pCmd->pTableNameList[i]);
+    }
+  }
+
+  tfree(pCmd->pTableNameList);
+
+/*
+  STableDataBlocks** p = taosHashIterate(pCmd->pTableBlockHashList, NULL);
+
+  STableDataBlocks* pOneTableBlock = *p;
+
+  while (1) {
+    SSubmitBlk* pBlocks = (SSubmitBlk*) pOneTableBlock->pData;
+
+    pOneTableBlock->size = sizeof(SSubmitBlk);
+
+    pBlocks->numOfRows = 0;
+
+    p = taosHashIterate(pCmd->pTableBlockHashList, p);
+    if (p == NULL) {
+      break;
+    }
+
+    pOneTableBlock = *p;
+  }
+*/
+
+  pCmd->pDataBlocks = tscDestroyBlockArrayList(pCmd->pDataBlocks);
+  pCmd->numOfTables = 0;
+
+  taosHashEmpty(pCmd->pTableBlockHashList);
+  tscFreeSqlResult(pSql);
+  tscFreeSubobj(pSql);
+  tfree(pSql->pSubs);
+  pSql->subState.numOfSub = 0;
+}
+
+static int insertBatchStmtExecute(STscStmt* pStmt) {
+  int32_t code = 0;
+
+  if(pStmt->mtb.nameSet == false) {
+    tscError("0x%"PRIx64" no table name set", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  pStmt->pSql->retry = pStmt->pSql->maxRetry + 1;  //no retry
+
+  if (taosHashGetSize(pStmt->pSql->cmd.pTableBlockHashList) <= 0) { // merge according to vgId
+    tscError("0x%"PRIx64" no data block to insert", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  fillTablesColumnsNull(pStmt->pSql);
+
+  if ((code = tscMergeTableDataBlocks(pStmt->pSql, false)) != TSDB_CODE_SUCCESS) {
+    return code;
+  }
+
+  code = tscHandleMultivnodeInsert(pStmt->pSql);
+
+  if (code != TSDB_CODE_SUCCESS) {
+    return code;
+  }
+
+  // wait for the callback function to post the semaphore
+  tsem_wait(&pStmt->pSql->rspSem);
+
+  insertBatchClean(pStmt);
+
+  return pStmt->pSql->res.code;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // interface functions
 
@@ -865,7 +1230,9 @@ TAOS_STMT* taos_stmt_init(TAOS* taos) {
   pSql->signature = pSql;
   pSql->pTscObj   = pObj;
   pSql->maxRetry  = TSDB_MAX_REPLICA;
+  pSql->isBind    = true;
   pStmt->pSql     = pSql;
+  pStmt->last     = STMT_INIT;
 
   return pStmt;
 }
@@ -878,6 +1245,13 @@ int taos_stmt_prepare(TAOS_STMT* stmt, const char* sql, unsigned long length) {
     return TSDB_CODE_TSC_DISCONNECTED;
   }
 
+  if (pStmt->last != STMT_INIT) {
+    tscError("prepare status error, last:%d", pStmt->last);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  pStmt->last = STMT_PREPARE;
+
   SSqlObj* pSql = pStmt->pSql;
   size_t   sqlLen = strlen(sql);
 
@@ -916,6 +1290,36 @@ int taos_stmt_prepare(TAOS_STMT* stmt, const char* sql, unsigned long length) {
 
     registerSqlObj(pSql);
 
+    int32_t ret = TSDB_CODE_SUCCESS;
+
+    if ((ret = tsInsertInitialCheck(pSql)) != TSDB_CODE_SUCCESS) {
+      return ret;
+    }
+
+    int32_t index = 0;
+    SStrToken sToken = tStrGetToken(pCmd->curSql, &index, false);
+
+    if (sToken.n == 0) {
+      return TSDB_CODE_TSC_INVALID_SQL;
+    }
+
+    if (sToken.n == 1 && sToken.type == TK_QUESTION) {
+      pStmt->multiTbInsert = true;
+      pStmt->mtb.tbname = sToken;
+      pStmt->mtb.nameSet = false;
+      if (pStmt->mtb.pTableHash == NULL) {
+        pStmt->mtb.pTableHash = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, false);
+      }
+      if (pStmt->mtb.pTableBlockHashList == NULL) {
+        pStmt->mtb.pTableBlockHashList = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
+      }
+
+      return TSDB_CODE_SUCCESS;
+    }
+
+    pStmt->multiTbInsert = false;
+    memset(&pStmt->mtb, 0, sizeof(pStmt->mtb));
+
     int32_t code = tsParseSql(pSql, true);
     if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
       // wait for the callback function to post the semaphore
@@ -930,6 +1334,104 @@ int taos_stmt_prepare(TAOS_STMT* stmt, const char* sql, unsigned long length) {
   return normalStmtPrepare(pStmt);
 }
 
+int taos_stmt_set_tbname(TAOS_STMT* stmt, const char* name) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+  SSqlObj* pSql = pStmt->pSql;
+  SSqlCmd* pCmd = &pSql->cmd;
+
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
+  if (name == NULL) {
+    terrno = TSDB_CODE_TSC_APP_ERROR;
+    tscError("0x%"PRIx64" name is NULL", pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (pStmt->multiTbInsert == false || !tscIsInsertData(pSql->sqlstr)) {
+    terrno = TSDB_CODE_TSC_APP_ERROR;
+    tscError("0x%"PRIx64" not multi table insert", pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (pStmt->last == STMT_INIT || pStmt->last == STMT_BIND || pStmt->last == STMT_BIND_COL) {
+    tscError("0x%"PRIx64" settbname status error, last:%d", pSql->self, pStmt->last);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  pStmt->last = STMT_SETTBNAME;
+
+  uint64_t* uid = (uint64_t*)taosHashGet(pStmt->mtb.pTableHash, name, strlen(name));
+  if (uid != NULL) {
+    pStmt->mtb.currentUid = *uid;
+
+    STableDataBlocks** t1 = (STableDataBlocks**)taosHashGet(pStmt->mtb.pTableBlockHashList, (const char*)&pStmt->mtb.currentUid, sizeof(pStmt->mtb.currentUid));
+    if (t1 == NULL) {
+      tscError("0x%"PRIx64" no table data block in hash list, uid:%" PRId64 , pSql->self, pStmt->mtb.currentUid);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    SSubmitBlk* pBlk = (SSubmitBlk*) (*t1)->pData;
+    pCmd->batchSize = pBlk->numOfRows;
+
+    taosHashPut(pCmd->pTableBlockHashList, (void *)&pStmt->mtb.currentUid, sizeof(pStmt->mtb.currentUid), (void*)t1, POINTER_BYTES);
+
+    tscDebug("0x%"PRIx64" table:%s is already prepared, uid:%" PRIu64, pSql->self, name, pStmt->mtb.currentUid);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  pStmt->mtb.tbname = tscReplaceStrToken(&pSql->sqlstr, &pStmt->mtb.tbname, name);
+  pStmt->mtb.nameSet = true;
+
+  tscDebug("0x%"PRIx64" SQL: %s", pSql->self, pSql->sqlstr);
+
+  pSql->cmd.parseFinished = 0;
+  pSql->cmd.numOfParams = 0;
+  pSql->cmd.batchSize   = 0;
+
+  if (taosHashGetSize(pCmd->pTableBlockHashList) > 0) {
+    SHashObj* hashList = pCmd->pTableBlockHashList;
+    pCmd->pTableBlockHashList = NULL;
+    tscResetSqlCmd(pCmd, true);
+    pCmd->pTableBlockHashList = hashList;
+  }
+
+  int32_t code = tsParseSql(pStmt->pSql, true);
+  if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
+    // wait for the callback function to post the semaphore
+    tsem_wait(&pStmt->pSql->rspSem);
+
+    code = pStmt->pSql->res.code;
+  }
+
+  if (code == TSDB_CODE_SUCCESS) {
+    STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, 0);
+
+    STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
+    STableDataBlocks* pBlock = NULL;
+    code = tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE, sizeof(SSubmitBlk),
+                              pTableMeta->tableInfo.rowSize, &pTableMetaInfo->name, pTableMeta, &pBlock, NULL);
+    if (code != TSDB_CODE_SUCCESS) {
+      return code;
+    }
+
+    SSubmitBlk* blk = (SSubmitBlk*)pBlock->pData;
+    blk->numOfRows = 0;
+
+    pStmt->mtb.currentUid = pTableMeta->id.uid;
+    pStmt->mtb.tbNum++;
+
+    taosHashPut(pStmt->mtb.pTableBlockHashList, (void *)&pStmt->mtb.currentUid, sizeof(pStmt->mtb.currentUid), (void*)&pBlock, POINTER_BYTES);
+    taosHashPut(pStmt->mtb.pTableHash, name, strlen(name), (char*) &pTableMeta->id.uid, sizeof(pTableMeta->id.uid));
+
+    tscDebug("0x%"PRIx64" table:%s is prepared, uid:%" PRIx64, pSql->self, name, pStmt->mtb.currentUid);
+  }
+
+  return code;
+}
+
 int taos_stmt_close(TAOS_STMT* stmt) {
   STscStmt* pStmt = (STscStmt*)stmt;
   if (!pStmt->isInsert) {
@@ -942,6 +1444,13 @@ int taos_stmt_close(TAOS_STMT* stmt) {
     }
     free(normal->parts);
     free(normal->sql);
+  } else {
+    if (pStmt->multiTbInsert) {
+      taosHashCleanup(pStmt->mtb.pTableHash);
+      pStmt->mtb.pTableBlockHashList = tscDestroyBlockHashTable(pStmt->mtb.pTableBlockHashList, true);
+      taosHashCleanup(pStmt->pSql->cmd.pTableBlockHashList);
+      pStmt->pSql->cmd.pTableBlockHashList = NULL;
+    }
   }
 
   taos_free_result(pStmt->pSql);
@@ -951,18 +1460,122 @@ int taos_stmt_close(TAOS_STMT* stmt) {
 
 int taos_stmt_bind_param(TAOS_STMT* stmt, TAOS_BIND* bind) {
   STscStmt* pStmt = (STscStmt*)stmt;
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
   if (pStmt->isInsert) {
+    if (pStmt->multiTbInsert) {
+      if (pStmt->last != STMT_SETTBNAME && pStmt->last != STMT_ADD_BATCH) {
+        tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+        return TSDB_CODE_TSC_APP_ERROR;
+      }
+    } else {
+      if (pStmt->last != STMT_PREPARE && pStmt->last != STMT_ADD_BATCH && pStmt->last != STMT_EXECUTE) {
+        tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+        return TSDB_CODE_TSC_APP_ERROR;
+      }
+    }
+
+    pStmt->last = STMT_BIND;
+
     return insertStmtBindParam(pStmt, bind);
   } else {
     return normalStmtBindParam(pStmt, bind);
   }
 }
 
+
+int taos_stmt_bind_param_batch(TAOS_STMT* stmt, TAOS_MULTI_BIND* bind) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
+  if (bind == NULL || bind->num <= 0 || bind->num > INT16_MAX) {
+    tscError("0x%"PRIx64" invalid parameter", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (!pStmt->isInsert) {
+    tscError("0x%"PRIx64" not or invalid batch insert", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (pStmt->multiTbInsert) {
+    if (pStmt->last != STMT_SETTBNAME && pStmt->last != STMT_ADD_BATCH) {
+      tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+  } else {
+    if (pStmt->last != STMT_PREPARE && pStmt->last != STMT_ADD_BATCH && pStmt->last != STMT_EXECUTE) {
+      tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+  }
+
+  pStmt->last = STMT_BIND;
+
+  return insertStmtBindParamBatch(pStmt, bind, -1);
+}
+
+int taos_stmt_bind_single_param_batch(TAOS_STMT* stmt, TAOS_MULTI_BIND* bind, int colIdx) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
+  if (bind == NULL || bind->num <= 0 || bind->num > INT16_MAX) {
+    tscError("0x%"PRIx64" invalid parameter", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (!pStmt->isInsert) {
+    tscError("0x%"PRIx64" not or invalid batch insert", pStmt->pSql->self);
+    return TSDB_CODE_TSC_APP_ERROR;
+  }
+
+  if (pStmt->multiTbInsert) {
+    if (pStmt->last != STMT_SETTBNAME && pStmt->last != STMT_ADD_BATCH && pStmt->last != STMT_BIND_COL) {
+      tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+  } else {
+    if (pStmt->last != STMT_PREPARE && pStmt->last != STMT_ADD_BATCH && pStmt->last != STMT_BIND_COL && pStmt->last != STMT_EXECUTE) {
+      tscError("0x%"PRIx64" bind param status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+  }
+
+  pStmt->last = STMT_BIND_COL;
+
+  return insertStmtBindParamBatch(pStmt, bind, colIdx);
+}
+
+
+
 int taos_stmt_add_batch(TAOS_STMT* stmt) {
   STscStmt* pStmt = (STscStmt*)stmt;
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
   if (pStmt->isInsert) {
+    if (pStmt->last != STMT_BIND && pStmt->last != STMT_BIND_COL) {
+      tscError("0x%"PRIx64" add batch status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    pStmt->last = STMT_ADD_BATCH;
+
     return insertStmtAddBatch(pStmt);
   }
+
   return TSDB_CODE_COM_OPS_NOT_SUPPORT;
 }
 
@@ -977,8 +1590,24 @@ int taos_stmt_reset(TAOS_STMT* stmt) {
 int taos_stmt_execute(TAOS_STMT* stmt) {
   int ret = 0;
   STscStmt* pStmt = (STscStmt*)stmt;
+  if (stmt == NULL || pStmt->pSql == NULL || pStmt->taos == NULL) {
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return TSDB_CODE_TSC_DISCONNECTED;
+  }
+
   if (pStmt->isInsert) {
-    ret = insertStmtExecute(pStmt);
+    if (pStmt->last != STMT_ADD_BATCH) {
+      tscError("0x%"PRIx64" exec status error, last:%d", pStmt->pSql->self, pStmt->last);
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    pStmt->last = STMT_EXECUTE;
+
+    if (pStmt->multiTbInsert) {
+      ret = insertBatchStmtExecute(pStmt);
+    } else {
+      ret = insertStmtExecute(pStmt);
+    }
   } else { // normal stmt query
     char* sql = normalStmtBuildSql(pStmt);
     if (sql == NULL) {
@@ -1073,7 +1702,7 @@ int taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes) {
     }
 
     if (idx<0 || idx>=pBlock->numOfParams) {
-      tscError("param %d: out of range", idx);
+      tscError("0x%"PRIx64" param %d: out of range", pStmt->pSql->self, idx);
       abort();
     }
 

src/client/src/tscProfile.c

@@ -54,14 +54,14 @@ void tscAddIntoSqlList(SSqlObj *pSql) {
   pSql->next = pObj->sqlList;
   if (pObj->sqlList) pObj->sqlList->prev = pSql;
   pObj->sqlList = pSql;
-  pSql->queryId = queryId++;
+  pSql->queryId = atomic_fetch_add_32(&queryId, 1);
 
   pthread_mutex_unlock(&pObj->mutex);
 
   pSql->stime = taosGetTimestampMs();
   pSql->listed = 1;
 
-  tscDebug("0x%"PRIx64" added into sqlList", pSql->self);
+  tscDebug("0x%"PRIx64" added into sqlList, queryId:%u", pSql->self, pSql->queryId);
 }
 
 void tscSaveSlowQueryFpCb(void *param, TAOS_RES *result, int code) {

src/client/src/tscSQLParser.c

@@ -21,19 +21,19 @@
 #endif // __APPLE__
 
 #include "os.h"
-#include "ttype.h"
-#include "texpr.h"
 #include "taos.h"
 #include "taosmsg.h"
 #include "tcompare.h"
+#include "texpr.h"
 #include "tname.h"
 #include "tscLog.h"
 #include "tscUtil.h"
 #include "tschemautil.h"
 #include "tsclient.h"
-#include "tstoken.h"
 #include "tstrbuild.h"
+#include "ttoken.h"
 #include "ttokendef.h"
+#include "ttype.h"
 #include "qUtil.h"
 #include "qPlan.h"
 
@@ -65,7 +65,7 @@ static char*   getAccountId(SSqlObj* pSql);
 
 static bool has(SArray* pFieldList, int32_t startIdx, const char* name);
 static char* cloneCurrentDBName(SSqlObj* pSql);
-static bool hasSpecifyDB(SStrToken* pTableName);
+static int32_t getDelimiterIndex(SStrToken* pTableName);
 static bool validateTableColumnInfo(SArray* pFieldList, SSqlCmd* pCmd);
 static bool validateTagParams(SArray* pTagsList, SArray* pFieldList, SSqlCmd* pCmd);
 
@@ -247,6 +247,38 @@ static int32_t handlePassword(SSqlCmd* pCmd, SStrToken* pPwd) {
   return TSDB_CODE_SUCCESS;
 }
 
+// validate the out put field type for "UNION ALL" subclause
+static int32_t normalizeVarDataTypeLength(SSqlCmd* pCmd) {
+  const char* msg1 = "columns in select clause not identical";
+
+  int32_t diffSize = 0;
+
+  // if there is only one element, the limit of clause is the limit of global result.
+  SQueryInfo* pQueryInfo1 = pCmd->pQueryInfo;
+  SQueryInfo* pSibling = pQueryInfo1->sibling;
+
+  while(pSibling != NULL) {
+    int32_t ret = tscFieldInfoCompare(&pQueryInfo1->fieldsInfo, &pSibling->fieldsInfo, &diffSize);
+    if (ret != 0) {
+      return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
+    }
+
+    pSibling = pSibling->sibling;
+  }
+
+  if (diffSize) {
+    pQueryInfo1 = pCmd->pQueryInfo;
+    pSibling = pQueryInfo1->sibling;
+
+    while(pSibling->sibling != NULL) {
+      tscFieldInfoSetSize(&pQueryInfo1->fieldsInfo, &pSibling->fieldsInfo);
+      pSibling = pSibling->sibling;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
   if (pInfo == NULL || pSql == NULL) {
     return TSDB_CODE_TSC_APP_ERROR;
@@ -429,17 +461,11 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
     case TSDB_SQL_DESCRIBE_TABLE: {
       const char* msg1 = "invalid table name";
-      const char* msg2 = "table name too long";
 
       SStrToken* pToken = taosArrayGet(pInfo->pMiscInfo->a, 0);
       if (tscValidateName(pToken) != TSDB_CODE_SUCCESS) {
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
-
-      if (!tscValidateTableNameLength(pToken->n)) {
-        return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
-      }
-
       // additional msg has been attached already
       code = tscSetTableFullName(&pTableMetaInfo->name, pToken, pSql);
       if (code != TSDB_CODE_SUCCESS) {
@@ -448,19 +474,15 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
       return tscGetTableMeta(pSql, pTableMetaInfo);
     }
+    case TSDB_SQL_SHOW_CREATE_STABLE:
     case TSDB_SQL_SHOW_CREATE_TABLE: {
       const char* msg1 = "invalid table name";
-      const char* msg2 = "table name is too long";
 
       SStrToken* pToken = taosArrayGet(pInfo->pMiscInfo->a, 0);
       if (tscValidateName(pToken) != TSDB_CODE_SUCCESS) {
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
 
-      if (!tscValidateTableNameLength(pToken->n)) {
-        return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
-      }
-
       code = tscSetTableFullName(&pTableMetaInfo->name, pToken, pSql);
       if (code != TSDB_CODE_SUCCESS) {
         return code;
@@ -479,8 +501,7 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       if (pToken->n > TSDB_DB_NAME_LEN) {
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
-
-      return tscSetTableFullName(&pTableMetaInfo->name, pToken, pSql);
+      return tNameSetDbName(&pTableMetaInfo->name, getAccountId(pSql), pToken);
     }
     case TSDB_SQL_CFG_DNODE: {
       const char* msg2 = "invalid configure options or values, such as resetlog / debugFlag 135 / balance 'vnode:2-dnode:2' / monitor 1 ";
@@ -618,8 +639,6 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     }
 
     case TSDB_SQL_SELECT: {
-      const char* msg1 = "columns in select clause not identical";
-
       code = loadAllTableMeta(pSql, pInfo);
       if (code != TSDB_CODE_SUCCESS) {
         return code;
@@ -648,6 +667,10 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
         }
       }
 
+      if ((code = normalizeVarDataTypeLength(pCmd)) != TSDB_CODE_SUCCESS) {
+        return code;
+      }
+
       // restore the clause index
       pCmd->clauseIndex = 0;
 
@@ -655,17 +678,6 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       pCmd->active = pCmd->pQueryInfo;
       pCmd->command = pCmd->pQueryInfo->command;
 
-      // if there is only one element, the limit of clause is the limit of global result.
-      // validate the select node for "UNION ALL" subclause
-      SQueryInfo* pQueryInfo1 = pCmd->pQueryInfo;
-      while(pQueryInfo1->sibling != NULL) {
-        int32_t ret = tscFieldInfoCompare(&pQueryInfo1->fieldsInfo, &pQueryInfo1->sibling->fieldsInfo);
-        if (ret != 0) {
-          return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
-        }
-        pQueryInfo1 = pQueryInfo1->sibling;
-      }
-
       pCmd->parseFinished = 1;
       return TSDB_CODE_SUCCESS;  // do not build query message here
     }
@@ -992,11 +1004,13 @@ int32_t tscSetTableFullName(SName* pName, SStrToken* pTableName, SSqlObj* pSql)
   const char* msg1 = "name too long";
   const char* msg2 = "acctId too long";
   const char* msg3 = "no acctId";
+  const char* msg4 = "db name too long";
+  const char* msg5 = "table name too long";
 
   SSqlCmd* pCmd = &pSql->cmd;
   int32_t  code = TSDB_CODE_SUCCESS;
-
-  if (hasSpecifyDB(pTableName)) { // db has been specified in sql string so we ignore current db path
+  int32_t  idx  = getDelimiterIndex(pTableName);
+  if (idx != -1) { // db has been specified in sql string so we ignore current db path
     char* acctId = getAccountId(pSql);
     if (acctId == NULL || strlen(acctId) <= 0) {
       return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg3);
@@ -1006,6 +1020,13 @@ int32_t tscSetTableFullName(SName* pName, SStrToken* pTableName, SSqlObj* pSql)
     if (code != 0) {
       return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
     }
+    if (idx >= TSDB_DB_NAME_LEN) {
+      return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg4);
+    }
+
+    if (pTableName->n - 1 - idx >= TSDB_TABLE_NAME_LEN) {
+      return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg5);
+    }
 
     char name[TSDB_TABLE_FNAME_LEN] = {0};
     strncpy(name, pTableName->z, pTableName->n);
@@ -1348,14 +1369,13 @@ static char* cloneCurrentDBName(SSqlObj* pSql) {
 }
 
 /* length limitation, strstr cannot be applied */
-static bool hasSpecifyDB(SStrToken* pTableName) {
+static int32_t getDelimiterIndex(SStrToken* pTableName) {
   for (uint32_t i = 0; i < pTableName->n; ++i) {
     if (pTableName->z[i] == TS_PATH_DELIMITER[0]) {
-      return true;
+      return i;
     }
   }
-
-  return false;
+  return -1;
 }
 
 int32_t setObjFullName(char* fullName, const char* account, SStrToken* pDB, SStrToken* tableName, int32_t* xlen) {
@@ -1611,11 +1631,27 @@ bool isValidDistinctSql(SQueryInfo* pQueryInfo) {
   return false;
 }
 
+static bool hasNoneUserDefineExpr(SQueryInfo* pQueryInfo) {
+  size_t numOfExprs = taosArrayGetSize(pQueryInfo->exprList);
+  for (int32_t i = 0; i < numOfExprs; ++i) {
+    SSqlExpr* pExpr = taosArrayGetP(pQueryInfo->exprList, i);
+
+    if (TSDB_COL_IS_UD_COL(pExpr->colInfo.flag)) {
+      continue;
+    }
+
+    return true;
+  }
+
+  return false;
+}
+
 int32_t validateSelectNodeList(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelNodeList, bool isSTable, bool joinQuery,
                                bool timeWindowQuery) {
   assert(pSelNodeList != NULL && pCmd != NULL);
 
   const char* msg1 = "too many items in selection clause";
+
   const char* msg2 = "functions or others can not be mixed up";
   const char* msg3 = "not support query expression";
   const char* msg4 = "only support distinct one tag";
@@ -1680,7 +1716,7 @@ int32_t validateSelectNodeList(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pS
   
   // there is only one user-defined column in the final result field, add the timestamp column.
   size_t numOfSrcCols = taosArrayGetSize(pQueryInfo->colList);
-  if (numOfSrcCols <= 0 && !tscQueryTags(pQueryInfo) && !tscQueryBlockInfo(pQueryInfo)) {
+  if ((numOfSrcCols <= 0 || !hasNoneUserDefineExpr(pQueryInfo)) && !tscQueryTags(pQueryInfo) && !tscQueryBlockInfo(pQueryInfo)) {
     addPrimaryTsColIntoResult(pQueryInfo, pCmd);
   }
 
@@ -4620,7 +4656,7 @@ int32_t getTimeRange(STimeWindow* win, tSqlExpr* pRight, int32_t optr, int16_t t
       }
     } else {
       SStrToken token = {.z = pRight->value.pz, .n = pRight->value.nLen, .type = TK_ID};
-      int32_t   len = tSQLGetToken(pRight->value.pz, &token.type);
+      int32_t   len = tGetToken(pRight->value.pz, &token.type);
 
       if ((token.type != TK_INTEGER && token.type != TK_FLOAT) || len != pRight->value.nLen) {
         return TSDB_CODE_TSC_INVALID_SQL;
@@ -5507,13 +5543,13 @@ int32_t validateLocalConfig(SMiscInfo* pOptions) {
 }
 
 int32_t validateColumnName(char* name) {
-  bool ret = isKeyWord(name, (int32_t)strlen(name));
+  bool ret = taosIsKeyWordToken(name, (int32_t)strlen(name));
   if (ret) {
     return TSDB_CODE_TSC_INVALID_SQL;
   }
 
   SStrToken token = {.z = name};
-  token.n = tSQLGetToken(name, &token.type);
+  token.n = tGetToken(name, &token.type);
 
   if (token.type != TK_STRING && token.type != TK_ID) {
     return TSDB_CODE_TSC_INVALID_SQL;
@@ -5524,7 +5560,7 @@ int32_t validateColumnName(char* name) {
     strntolower(token.z, token.z, token.n);
     token.n = (uint32_t)strtrim(token.z);
 
-    int32_t k = tSQLGetToken(token.z, &token.type);
+    int32_t k = tGetToken(token.z, &token.type);
     if (k != token.n) {
       return TSDB_CODE_TSC_INVALID_SQL;
     }
@@ -5606,7 +5642,6 @@ int32_t validateLimitNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlN
      */
 //    assert(allVgroupInfoRetrieved(pQueryInfo));
 
-
     // No tables included. No results generated. Query results are empty.
     if (pTableMetaInfo->vgroupList->numOfVgroups == 0) {
       tscDebug("0x%"PRIx64" no table in super table, no output result", pSql->self);
@@ -7142,6 +7177,7 @@ int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo) {
   SArray* tableNameList = NULL;
   SArray* pVgroupList   = NULL;
   SArray* plist         = NULL;
+  STableMeta* pTableMeta = NULL;
 
   pCmd->pTableMetaMap = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
 
@@ -7174,7 +7210,7 @@ int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
   char buf[80 * 1024] = {0};
   assert(maxSize < 80 * 1024);
-  STableMeta* pTableMeta = (STableMeta*)buf;
+  pTableMeta = calloc(1, maxSize);
 
   plist = taosArrayInit(4, POINTER_BYTES);
   pVgroupList = taosArrayInit(4, POINTER_BYTES);
@@ -7189,7 +7225,7 @@ int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
     if (pTableMeta->id.uid > 0) {
       if (pTableMeta->tableType == TSDB_CHILD_TABLE) {
-        code = tscCreateTableMetaFromCChildMeta(pTableMeta, name);
+        code = tscCreateTableMetaFromCChildMeta(pTableMeta, name, buf);
 
         // create the child table meta from super table failed, try load it from mnode
         if (code != TSDB_CODE_SUCCESS) {
@@ -7222,7 +7258,6 @@ int32_t loadAllTableMeta(SSqlObj* pSql, struct SSqlInfo* pInfo) {
   }
 
 _end:
-
   if (plist != NULL) {
     taosArrayDestroyEx(plist, freeElem);
   }
@@ -7235,6 +7270,8 @@ _end:
     taosArrayDestroy(tableNameList);
   }
 
+  tfree(pTableMeta);
+
   return code;
 }
 
@@ -7733,4 +7770,3 @@ bool hasNormalColumnFilter(SQueryInfo* pQueryInfo) {
 
   return false;
 }
-

src/client/src/tscServer.c

@@ -2503,10 +2503,23 @@ int32_t getMultiTableMetaFromMnode(SSqlObj *pSql, SArray* pNameList, SArray* pVg
 int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
   assert(tIsValidName(&pTableMetaInfo->name));
 
-  tfree(pTableMetaInfo->pTableMeta);
-
   uint32_t size = tscGetTableMetaMaxSize();
-  pTableMetaInfo->pTableMeta = calloc(1, size);
+  if (pTableMetaInfo->pTableMeta == NULL) {
+    pTableMetaInfo->pTableMeta    = calloc(1, size);
+    pTableMetaInfo->tableMetaSize = size;
+  } else if (pTableMetaInfo->tableMetaSize < size) {
+    char *tmp = realloc(pTableMetaInfo->pTableMeta, size);
+    if (tmp == NULL) {
+      return TSDB_CODE_TSC_OUT_OF_MEMORY;
+    }
+    pTableMetaInfo->pTableMeta = (STableMeta *)tmp;
+    memset(pTableMetaInfo->pTableMeta, 0, size);
+    pTableMetaInfo->tableMetaSize = size;
+  } else {
+    //uint32_t s = tscGetTableMetaSize(pTableMetaInfo->pTableMeta);
+    memset(pTableMetaInfo->pTableMeta, 0, size);
+    pTableMetaInfo->tableMetaSize = size;
+  }
 
   pTableMetaInfo->pTableMeta->tableType = -1;
   pTableMetaInfo->pTableMeta->tableInfo.numOfColumns  = -1;
@@ -2518,10 +2531,13 @@ int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
   taosHashGetClone(tscTableMetaInfo, name, len, NULL, pTableMetaInfo->pTableMeta, -1);
 
   // TODO resize the tableMeta
+  char buf[80*1024] = {0};
+  assert(size < 80*1024);
+
   STableMeta* pMeta = pTableMetaInfo->pTableMeta;
   if (pMeta->id.uid > 0) {
     if (pMeta->tableType == TSDB_CHILD_TABLE) {
-      int32_t code = tscCreateTableMetaFromCChildMeta(pTableMetaInfo->pTableMeta, name);
+      int32_t code = tscCreateTableMetaFromCChildMeta(pTableMetaInfo->pTableMeta, name, buf);
       if (code != TSDB_CODE_SUCCESS) {
         return getTableMetaFromMnode(pSql, pTableMetaInfo);
       }
@@ -2698,6 +2714,7 @@ void tscInitMsgsFp() {
   tscProcessMsgRsp[TSDB_SQL_ALTER_DB] = tscProcessAlterDbMsgRsp;
 
   tscProcessMsgRsp[TSDB_SQL_SHOW_CREATE_TABLE] = tscProcessShowCreateRsp;
+  tscProcessMsgRsp[TSDB_SQL_SHOW_CREATE_STABLE] = tscProcessShowCreateRsp;
   tscProcessMsgRsp[TSDB_SQL_SHOW_CREATE_DATABASE] = tscProcessShowCreateRsp;
 
   tscKeepConn[TSDB_SQL_SHOW] = 1;

src/client/src/tscSql.c

@@ -461,6 +461,7 @@ static bool needToFetchNewBlock(SSqlObj* pSql) {
           pCmd->command == TSDB_SQL_FETCH ||
           pCmd->command == TSDB_SQL_SHOW ||
           pCmd->command == TSDB_SQL_SHOW_CREATE_TABLE ||
+          pCmd->command == TSDB_SQL_SHOW_CREATE_STABLE ||
           pCmd->command == TSDB_SQL_SHOW_CREATE_DATABASE ||
           pCmd->command == TSDB_SQL_SELECT ||
           pCmd->command == TSDB_SQL_DESCRIBE_TABLE ||

src/client/src/tscSubquery.c

@@ -55,9 +55,9 @@ static void skipRemainValue(STSBuf* pTSBuf, tVariant* tag1) {
   }
 
   while (tsBufNextPos(pTSBuf)) {
-    STSElem el1 = tsBufGetElem(pTSBuf);
+    el1 = tsBufGetElem(pTSBuf);
 
-    int32_t res = tVariantCompare(el1.tag, tag1);
+    res = tVariantCompare(el1.tag, tag1);
     if (res != 0) { // it is a record with new tag
       return;
     }
@@ -624,7 +624,13 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
       int16_t colId = tscGetJoinTagColIdByUid(&pQueryInfo->tagCond, pTableMetaInfo->pTableMeta->id.uid);
 
       // set the tag column id for executor to extract correct tag value
+#ifndef _TD_NINGSI_60      
       pExpr->base.param[0] = (tVariant) {.i64 = colId, .nType = TSDB_DATA_TYPE_BIGINT, .nLen = sizeof(int64_t)};
+#else
+      pExpr->base.param[0].i64 = colId;
+      pExpr->base.param[0].nType = TSDB_DATA_TYPE_BIGINT;
+      pExpr->base.param[0].nLen = sizeof(int64_t);
+#endif
       pExpr->base.numOfParams = 1;
     }
 
@@ -2842,7 +2848,7 @@ static void tscRetrieveFromDnodeCallBack(void *param, TAOS_RES *tres, int numOfR
     tscDebug("0x%"PRIx64" sub:%p retrieve numOfRows:%d totalNumOfRows:%" PRIu64 " from ep:%s, orderOfSub:%d",
         pParentSql->self, pSql, pRes->numOfRows, pState->numOfRetrievedRows, pSql->epSet.fqdn[pSql->epSet.inUse], idx);
 
-    if (num > tsMaxNumOfOrderedResults && tscIsProjectionQueryOnSTable(pQueryInfo, 0)) {
+    if (num > tsMaxNumOfOrderedResults && tscIsProjectionQueryOnSTable(pQueryInfo, 0) && !(tscGetQueryInfo(&pParentSql->cmd)->distinctTag)) {
       tscError("0x%"PRIx64" sub:0x%"PRIx64" num of OrderedRes is too many, max allowed:%" PRId32 " , current:%" PRId64,
                pParentSql->self, pSql->self, tsMaxNumOfOrderedResults, num);
       tscAbortFurtherRetryRetrieval(trsupport, tres, TSDB_CODE_TSC_SORTED_RES_TOO_MANY);

src/client/src/tscUtil.c

@@ -1349,7 +1349,8 @@ int32_t tscCopyDataBlockToPayload(SSqlObj* pSql, STableDataBlocks* pDataBlock) {
       tfree(pTableMetaInfo->pTableMeta);
     }
 
-    pTableMetaInfo->pTableMeta = tscTableMetaDup(pDataBlock->pTableMeta);
+    pTableMetaInfo->pTableMeta    = tscTableMetaDup(pDataBlock->pTableMeta);
+    pTableMetaInfo->tableMetaSize = tscGetTableMetaSize(pDataBlock->pTableMeta); 
   }
 
   /*
@@ -1566,67 +1567,73 @@ int32_t tscMergeTableDataBlocks(SSqlObj* pSql, bool freeBlockMap) {
 
   STableDataBlocks* pOneTableBlock = *p;
   while(pOneTableBlock) {
-    // the maximum expanded size in byte when a row-wise data is converted to SDataRow format
-    int32_t expandSize = getRowExpandSize(pOneTableBlock->pTableMeta);
-    STableDataBlocks* dataBuf = NULL;
-    
-    int32_t ret = tscGetDataBlockFromList(pVnodeDataBlockHashList, pOneTableBlock->vgId, TSDB_PAYLOAD_SIZE,
-                                INSERT_HEAD_SIZE, 0, &pOneTableBlock->tableName, pOneTableBlock->pTableMeta, &dataBuf, pVnodeDataBlockList);
-    if (ret != TSDB_CODE_SUCCESS) {
-      tscError("0x%"PRIx64" failed to prepare the data block buffer for merging table data, code:%d", pSql->self, ret);
-      taosHashCleanup(pVnodeDataBlockHashList);
-      tscDestroyBlockArrayList(pVnodeDataBlockList);
-      return ret;
-    }
-
     SSubmitBlk* pBlocks = (SSubmitBlk*) pOneTableBlock->pData;
-    int64_t destSize = dataBuf->size + pOneTableBlock->size + pBlocks->numOfRows * expandSize + sizeof(STColumn) * tscGetNumOfColumns(pOneTableBlock->pTableMeta);
-
-    if (dataBuf->nAllocSize < destSize) {
-      while (dataBuf->nAllocSize < destSize) {
-        dataBuf->nAllocSize = (uint32_t)(dataBuf->nAllocSize * 1.5);
-      }
-
-      char* tmp = realloc(dataBuf->pData, dataBuf->nAllocSize);
-      if (tmp != NULL) {
-        dataBuf->pData = tmp;
-        memset(dataBuf->pData + dataBuf->size, 0, dataBuf->nAllocSize - dataBuf->size);
-      } else {  // failed to allocate memory, free already allocated memory and return error code
-        tscError("0x%"PRIx64" failed to allocate memory for merging submit block, size:%d", pSql->self, dataBuf->nAllocSize);
+    if (pBlocks->numOfRows > 0) {
+      // the maximum expanded size in byte when a row-wise data is converted to SDataRow format
+      int32_t expandSize = getRowExpandSize(pOneTableBlock->pTableMeta);
+      STableDataBlocks* dataBuf = NULL;
       
+      int32_t ret = tscGetDataBlockFromList(pVnodeDataBlockHashList, pOneTableBlock->vgId, TSDB_PAYLOAD_SIZE,
+                                  INSERT_HEAD_SIZE, 0, &pOneTableBlock->tableName, pOneTableBlock->pTableMeta, &dataBuf, pVnodeDataBlockList);
+      if (ret != TSDB_CODE_SUCCESS) {
+        tscError("0x%"PRIx64" failed to prepare the data block buffer for merging table data, code:%d", pSql->self, ret);
         taosHashCleanup(pVnodeDataBlockHashList);
         tscDestroyBlockArrayList(pVnodeDataBlockList);
-        tfree(dataBuf->pData);
-
-        return TSDB_CODE_TSC_OUT_OF_MEMORY;
+        return ret;
       }
+
+      int64_t destSize = dataBuf->size + pOneTableBlock->size + pBlocks->numOfRows * expandSize + sizeof(STColumn) * tscGetNumOfColumns(pOneTableBlock->pTableMeta);
+
+      if (dataBuf->nAllocSize < destSize) {
+        while (dataBuf->nAllocSize < destSize) {
+          dataBuf->nAllocSize = (uint32_t)(dataBuf->nAllocSize * 1.5);
+        }
+
+        char* tmp = realloc(dataBuf->pData, dataBuf->nAllocSize);
+        if (tmp != NULL) {
+          dataBuf->pData = tmp;
+          memset(dataBuf->pData + dataBuf->size, 0, dataBuf->nAllocSize - dataBuf->size);
+        } else {  // failed to allocate memory, free already allocated memory and return error code
+          tscError("0x%"PRIx64" failed to allocate memory for merging submit block, size:%d", pSql->self, dataBuf->nAllocSize);
+
+          taosHashCleanup(pVnodeDataBlockHashList);
+          tscDestroyBlockArrayList(pVnodeDataBlockList);
+          tfree(dataBuf->pData);
+
+          return TSDB_CODE_TSC_OUT_OF_MEMORY;
+        }
+      }
+
+      tscSortRemoveDataBlockDupRows(pOneTableBlock);
+      char* ekey = (char*)pBlocks->data + pOneTableBlock->rowSize*(pBlocks->numOfRows-1);
+
+      tscDebug("0x%"PRIx64" name:%s, name:%d rows:%d sversion:%d skey:%" PRId64 ", ekey:%" PRId64, pSql->self, tNameGetTableName(&pOneTableBlock->tableName),
+          pBlocks->tid, pBlocks->numOfRows, pBlocks->sversion, GET_INT64_VAL(pBlocks->data), GET_INT64_VAL(ekey));
+
+      int32_t len = pBlocks->numOfRows * (pOneTableBlock->rowSize + expandSize) + sizeof(STColumn) * tscGetNumOfColumns(pOneTableBlock->pTableMeta);
+
+      pBlocks->tid = htonl(pBlocks->tid);
+      pBlocks->uid = htobe64(pBlocks->uid);
+      pBlocks->sversion = htonl(pBlocks->sversion);
+      pBlocks->numOfRows = htons(pBlocks->numOfRows);
+      pBlocks->schemaLen = 0;
+
+      // erase the empty space reserved for binary data
+      int32_t finalLen = trimDataBlock(dataBuf->pData + dataBuf->size, pOneTableBlock, pCmd->submitSchema);
+      assert(finalLen <= len);
+
+      dataBuf->size += (finalLen + sizeof(SSubmitBlk));
+      assert(dataBuf->size <= dataBuf->nAllocSize);
+
+      // the length does not include the SSubmitBlk structure
+      pBlocks->dataLen = htonl(finalLen);
+      dataBuf->numOfTables += 1;
+
+      pBlocks->numOfRows = 0;
+    }else {
+      tscDebug("0x%"PRIx64" table %s data block is empty", pSql->self, pOneTableBlock->tableName.tname);
     }
     
-    tscSortRemoveDataBlockDupRows(pOneTableBlock);
-    char* ekey = (char*)pBlocks->data + pOneTableBlock->rowSize*(pBlocks->numOfRows-1);
-
-    tscDebug("0x%"PRIx64" name:%s, name:%d rows:%d sversion:%d skey:%" PRId64 ", ekey:%" PRId64, pSql->self, tNameGetTableName(&pOneTableBlock->tableName),
-        pBlocks->tid, pBlocks->numOfRows, pBlocks->sversion, GET_INT64_VAL(pBlocks->data), GET_INT64_VAL(ekey));
-
-    int32_t len = pBlocks->numOfRows * (pOneTableBlock->rowSize + expandSize) + sizeof(STColumn) * tscGetNumOfColumns(pOneTableBlock->pTableMeta);
-
-    pBlocks->tid = htonl(pBlocks->tid);
-    pBlocks->uid = htobe64(pBlocks->uid);
-    pBlocks->sversion = htonl(pBlocks->sversion);
-    pBlocks->numOfRows = htons(pBlocks->numOfRows);
-    pBlocks->schemaLen = 0;
-
-    // erase the empty space reserved for binary data
-    int32_t finalLen = trimDataBlock(dataBuf->pData + dataBuf->size, pOneTableBlock, pCmd->submitSchema);
-    assert(finalLen <= len);
-
-    dataBuf->size += (finalLen + sizeof(SSubmitBlk));
-    assert(dataBuf->size <= dataBuf->nAllocSize);
-
-    // the length does not include the SSubmitBlk structure
-    pBlocks->dataLen = htonl(finalLen);
-    dataBuf->numOfTables += 1;
-
     p = taosHashIterate(pCmd->pTableBlockHashList, p);
     if (p == NULL) {
       break;
@@ -1748,7 +1755,7 @@ int16_t tscFieldInfoGetOffset(SQueryInfo* pQueryInfo, int32_t index) {
   return pInfo->pExpr->base.offset;
 }
 
-int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2) {
+int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2, int32_t *diffSize) {
   assert(pFieldInfo1 != NULL && pFieldInfo2 != NULL);
 
   if (pFieldInfo1->numOfOutput != pFieldInfo2->numOfOutput) {
@@ -1760,15 +1767,37 @@ int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFi
     TAOS_FIELD* pField2 = tscFieldInfoGetField((SFieldInfo*) pFieldInfo2, i);
 
     if (pField1->type != pField2->type ||
-        pField1->bytes != pField2->bytes ||
         strcasecmp(pField1->name, pField2->name) != 0) {
       return 1;
     }
+
+    if (pField1->bytes != pField2->bytes) {
+      *diffSize = 1;
+
+      if (pField2->bytes > pField1->bytes) {
+        assert(IS_VAR_DATA_TYPE(pField1->type));
+        pField1->bytes = pField2->bytes;
+      }
+    }
   }
 
   return 0;
 }
 
+int32_t tscFieldInfoSetSize(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2) {
+  assert(pFieldInfo1 != NULL && pFieldInfo2 != NULL);
+
+  for (int32_t i = 0; i < pFieldInfo1->numOfOutput; ++i) {
+    TAOS_FIELD* pField1 = tscFieldInfoGetField((SFieldInfo*) pFieldInfo1, i);
+    TAOS_FIELD* pField2 = tscFieldInfoGetField((SFieldInfo*) pFieldInfo2, i);
+
+    pField2->bytes = pField1->bytes;
+  }
+
+  return 0;
+}
+
+
 int32_t tscGetResRowLength(SArray* pExprList) {
   size_t num = taosArrayGetSize(pExprList);
   if (num == 0) {
@@ -2246,7 +2275,7 @@ void tscColumnListDestroy(SArray* pColumnList) {
 static int32_t validateQuoteToken(SStrToken* pToken) {
   tscDequoteAndTrimToken(pToken);
 
-  int32_t k = tSQLGetToken(pToken->z, &pToken->type);
+  int32_t k = tGetToken(pToken->z, &pToken->type);
 
   if (pToken->type == TK_STRING) {
     return tscValidateName(pToken);
@@ -2314,7 +2343,7 @@ int32_t tscValidateName(SStrToken* pToken) {
       tscStrToLower(pToken->z, pToken->n);
       //pToken->n = (uint32_t)strtrim(pToken->z);
        
-      int len = tSQLGetToken(pToken->z, &pToken->type);
+      int len = tGetToken(pToken->z, &pToken->type);
 
       // single token, validate it
       if (len == pToken->n) {
@@ -2340,7 +2369,7 @@ int32_t tscValidateName(SStrToken* pToken) {
       pToken->n = (uint32_t)strtrim(pToken->z);
     }
 
-    pToken->n = tSQLGetToken(pToken->z, &pToken->type);
+    pToken->n = tGetToken(pToken->z, &pToken->type);
     if (pToken->z[pToken->n] != TS_PATH_DELIMITER[0]) {
       return TSDB_CODE_TSC_INVALID_SQL;
     }
@@ -2357,7 +2386,7 @@ int32_t tscValidateName(SStrToken* pToken) {
 
     pToken->z = sep + 1;
     pToken->n = (uint32_t)(oldLen - (sep - pStr) - 1);
-    int32_t len = tSQLGetToken(pToken->z, &pToken->type);
+    int32_t len = tGetToken(pToken->z, &pToken->type);
     if (len != pToken->n || (pToken->type != TK_STRING && pToken->type != TK_ID)) {
       return TSDB_CODE_TSC_INVALID_SQL;
     }
@@ -2893,6 +2922,11 @@ STableMetaInfo* tscAddTableMetaInfo(SQueryInfo* pQueryInfo, SName* name, STableM
   }
 
   pTableMetaInfo->pTableMeta = pTableMeta;
+  if (pTableMetaInfo->pTableMeta == NULL) {
+    pTableMetaInfo->tableMetaSize = 0; 
+  } else {
+    pTableMetaInfo->tableMetaSize = tscGetTableMetaSize(pTableMeta);
+  }
   
   if (vgroupList != NULL) {
     pTableMetaInfo->vgroupList = tscVgroupInfoClone(vgroupList);
@@ -3168,6 +3202,7 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, __async_cb_func_t
 
     pFinalInfo = tscAddTableMetaInfo(pNewQueryInfo, &pTableMetaInfo->name, pTableMeta, pTableMetaInfo->vgroupList,
                                      pTableMetaInfo->tagColList, pTableMetaInfo->pVgroupTables);
+    
   } else {  // transfer the ownership of pTableMeta to the newly create sql object.
     STableMetaInfo* pPrevInfo = tscGetTableMetaInfoFromCmd(&pPrevSql->cmd, 0);
     if (pPrevInfo->pTableMeta && pPrevInfo->pTableMeta->tableType < 0) {
@@ -3377,16 +3412,21 @@ void tscDoQuery(SSqlObj* pSql) {
     return;
   }
   
-  if (pCmd->command == TSDB_SQL_SELECT) {
-    tscAddIntoSqlList(pSql);
-  }
-
   if (pCmd->dataSourceType == DATA_FROM_DATA_FILE) {
     tscImportDataFromFile(pSql);
   } else {
     SQueryInfo *pQueryInfo = tscGetQueryInfo(pCmd);
     uint16_t type = pQueryInfo->type;
 
+    if ((pCmd->command == TSDB_SQL_SELECT) && (!TSDB_QUERY_HAS_TYPE(type, TSDB_QUERY_TYPE_SUBQUERY)) && (!TSDB_QUERY_HAS_TYPE(type, TSDB_QUERY_TYPE_STABLE_SUBQUERY))) {
+      tscAddIntoSqlList(pSql);
+    }
+  
+    if (TSDB_QUERY_HAS_TYPE(type, TSDB_QUERY_TYPE_INSERT)) {  // multi-vnodes insertion
+      tscHandleMultivnodeInsert(pSql);
+      return;
+    }
+
     if (QUERY_IS_JOIN_QUERY(type)) {
       if (!TSDB_QUERY_HAS_TYPE(type, TSDB_QUERY_TYPE_SUBQUERY)) {
         tscHandleMasterJoinQuery(pSql);
@@ -3648,7 +3688,13 @@ void tscTryQueryNextClause(SSqlObj* pSql, __async_cb_func_t fp) {
 
   //backup the total number of result first
   int64_t num = pRes->numOfTotal + pRes->numOfClauseTotal;
+
+
+  // DON't free final since it may be recoreded and used later in APP
+  TAOS_FIELD* finalBk = pRes->final;
+  pRes->final = NULL;
   tscFreeSqlResult(pSql);
+  pRes->final = finalBk;
   
   pRes->numOfTotal = num;
   
@@ -3881,11 +3927,9 @@ CChildTableMeta* tscCreateChildMeta(STableMeta* pTableMeta) {
   return cMeta;
 }
 
-int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name) {
-  assert(pChild != NULL);
-
-  uint32_t size = tscGetTableMetaMaxSize();
-  STableMeta* p = calloc(1, size);
+int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name, void* buf) {
+  assert(pChild != NULL && buf != NULL);
+  STableMeta* p = buf;
 
   taosHashGetClone(tscTableMetaInfo, pChild->sTableName, strnlen(pChild->sTableName, TSDB_TABLE_FNAME_LEN), NULL, p, -1);
   if (p->id.uid > 0) { // tableMeta exists, build child table meta and return
@@ -3896,13 +3940,9 @@ int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name) {
     int32_t total = pChild->tableInfo.numOfColumns + pChild->tableInfo.numOfTags;
 
     memcpy(pChild->schema, p->schema, sizeof(SSchema) *total);
-
-    tfree(p);
     return TSDB_CODE_SUCCESS;
   } else { // super table has been removed, current tableMeta is also expired. remove it here
     taosHashRemove(tscTableMetaInfo, name, strnlen(name, TSDB_TABLE_FNAME_LEN));
-
-    tfree(p);
     return -1;
   }
 }
@@ -4257,7 +4297,7 @@ int tscTransferTableNameList(SSqlObj *pSql, const char *pNameList, int32_t lengt
     len = (int32_t)strtrim(tblName);
 
     SStrToken sToken = {.n = len, .type = TK_ID, .z = tblName};
-    tSQLGetToken(tblName, &sToken.type);
+    tGetToken(tblName, &sToken.type);
 
     // Check if the table name available or not
     if (tscValidateName(&sToken) != TSDB_CODE_SUCCESS) {

src/client/tests/timeParseTest.cpp

@@ -4,7 +4,7 @@
 #include <iostream>
 
 #include "taos.h"
-#include "tstoken.h"
+#include "ttoken.h"
 #include "tutil.h"
 
 int main(int argc, char** argv) {
@@ -98,7 +98,7 @@ TEST(testCase, parse_time) {
   taosParseTime(t41, &time, strlen(t41), TSDB_TIME_PRECISION_MILLI, 0);
   EXPECT_EQ(time, 852048000999);
 
-  int64_t k = timezone;
+//  int64_t k = timezone;
   char    t42[] = "1997-1-1T0:0:0.999999999Z";
   taosParseTime(t42, &time, strlen(t42), TSDB_TIME_PRECISION_MILLI, 0);
   EXPECT_EQ(time, 852048000999 - timezone * MILLISECOND_PER_SECOND);
@@ -163,7 +163,7 @@ TEST(testCase, parse_time) {
   taosParseTime(t13, &time, strlen(t13), TSDB_TIME_PRECISION_MILLI, 0);
   EXPECT_EQ(time, -28800 * MILLISECOND_PER_SECOND);
 
-  char* t = "2021-01-08T02:11:40.000+00:00";
+  char t[] = "2021-01-08T02:11:40.000+00:00";
   taosParseTime(t, &time, strlen(t), TSDB_TIME_PRECISION_MILLI, 0);
   printf("%ld\n", time);
 }

src/common/inc/tcmdtype.h

@@ -80,6 +80,7 @@ enum {
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_TABLE_JOIN_RETRIEVE, "join-retrieve" )
 
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SHOW_CREATE_TABLE, "show-create-table")
+  TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SHOW_CREATE_STABLE, "show-create-stable")
   TSDB_DEFINE_SQL_TYPE( TSDB_SQL_SHOW_CREATE_DATABASE, "show-create-database")
 
   /*

src/common/inc/tdataformat.h

@@ -15,10 +15,7 @@
 #ifndef _TD_DATA_FORMAT_H_
 #define _TD_DATA_FORMAT_H_
 
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
+#include "os.h"
 #include "talgo.h"
 #include "ttype.h"
 #include "tutil.h"

src/common/inc/texpr.h

@@ -87,10 +87,9 @@ tExprNode* exprTreeFromBinary(const void* data, size_t size);
 tExprNode* exprTreeFromTableName(const char* tbnameCond);
 tExprNode* exprdup(tExprNode* pTree);
 
-bool exprTreeApplyFilter(tExprNode *pExpr, const void *pItem, SExprTraverseSupp *param);
+void exprTreeToBinary(SBufferWriter* bw, tExprNode* pExprTree);
 
-typedef void (*_arithmetic_operator_fn_t)(void *left, int32_t numLeft, int32_t leftType, void *right, int32_t numRight,
-                                          int32_t rightType, void *output, int32_t order);
+bool exprTreeApplyFilter(tExprNode *pExpr, const void *pItem, SExprTraverseSupp *param);
 
 void arithmeticTreeTraverse(tExprNode *pExprs, int32_t numOfRows, char *pOutput, void *param, int32_t order,
                             char *(*cb)(void *, const char*, int32_t));

src/common/inc/tglobal.h

@@ -44,6 +44,7 @@ extern int32_t  tsDnodeId;
 // common
 extern int      tsRpcTimer;
 extern int      tsRpcMaxTime;
+extern int      tsRpcForceTcp; // all commands go to tcp protocol if this is enabled
 extern int32_t  tsMaxConnections;
 extern int32_t  tsMaxShellConns;
 extern int32_t  tsShellActivityTimer;

src/common/inc/tname.h

@@ -18,7 +18,7 @@
 
 #include "os.h"
 #include "taosmsg.h"
-#include "tstoken.h"
+#include "ttoken.h"
 #include "tvariant.h"
 
 typedef struct SDataStatis {

src/common/inc/tvariant.h

@@ -16,8 +16,8 @@
 #ifndef TDENGINE_TVARIANT_H
 #define TDENGINE_TVARIANT_H
 
-#include "tstoken.h"
 #include "tarray.h"
+#include "ttoken.h"
 
 #ifdef __cplusplus
 extern "C" {

src/common/src/tglobal.c

@@ -48,6 +48,7 @@ int32_t  tsDnodeId = 0;
 // common
 int32_t tsRpcTimer       = 1000;
 int32_t tsRpcMaxTime     = 600;  // seconds;
+int32_t tsRpcForceTcp    = 0;  //disable this, means query, show command use udp protocol as default
 int32_t tsMaxShellConns  = 50000;
 int32_t tsMaxConnections = 5000;
 int32_t tsShellActivityTimer  = 3;  // second
@@ -625,6 +626,16 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_MS;
   taosInitConfigOption(cfg);
 
+  cfg.option = "rpcForceTcp";
+  cfg.ptr = &tsRpcForceTcp;
+  cfg.valType = TAOS_CFG_VTYPE_INT32;
+  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT;
+  cfg.minValue = 0;
+  cfg.maxValue = 1;
+  cfg.ptrLength = 0;
+  cfg.unitType = TAOS_CFG_UTYPE_NONE;
+  taosInitConfigOption(cfg);
+
   cfg.option = "rpcMaxTime";
   cfg.ptr = &tsRpcMaxTime;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
@@ -921,7 +932,7 @@ static void doInitGlobalConfig(void) {
   cfg.valType = TAOS_CFG_VTYPE_INT32;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT | TSDB_CFG_CTYPE_B_SHOW;
   cfg.minValue = -1;
-  cfg.maxValue = 10000000000.0f;
+  cfg.maxValue = 100000000.0f;
   cfg.ptrLength = 0;
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);

src/common/src/tname.c

@@ -2,7 +2,7 @@
 #include "tutil.h"
 
 #include "tname.h"
-#include "tstoken.h"
+#include "ttoken.h"
 #include "tvariant.h"
 
 #define VALIDNUMOFCOLS(x)  ((x) >= TSDB_MIN_COLUMNS && (x) <= TSDB_MAX_COLUMNS)

src/common/src/tvariant.c

@@ -14,14 +14,14 @@
  */
 #include "os.h"
 
-#include "tvariant.h"
 #include "hash.h"
 #include "taos.h"
 #include "taosdef.h"
-#include "tstoken.h"
+#include "ttoken.h"
 #include "ttokendef.h"
-#include "tutil.h"
 #include "ttype.h"
+#include "tutil.h"
+#include "tvariant.h"
 
 void tVariantCreate(tVariant *pVar, SStrToken *token) {
   int32_t ret = 0;
@@ -49,7 +49,7 @@ void tVariantCreate(tVariant *pVar, SStrToken *token) {
       ret = tStrToInteger(token->z, token->type, token->n, &pVar->i64, true);
       if (ret != 0) {
         SStrToken t = {0};
-        tSQLGetToken(token->z, &t.type);
+        tGetToken(token->z, &t.type);
         if (t.type == TK_MINUS) {  // it is a signed number which is greater than INT64_MAX or less than INT64_MIN
           pVar->nType = -1;   // -1 means error type
           return;
@@ -460,7 +460,7 @@ static FORCE_INLINE int32_t convertToInteger(tVariant *pVariant, int64_t *result
     *result = (int64_t) pVariant->dKey;
   } else if (pVariant->nType == TSDB_DATA_TYPE_BINARY) {
     SStrToken token = {.z = pVariant->pz, .n = pVariant->nLen};
-    /*int32_t n = */tSQLGetToken(pVariant->pz, &token.type);
+    /*int32_t n = */tGetToken(pVariant->pz, &token.type);
 
     if (token.type == TK_NULL) {
       if (releaseVariantPtr) {
@@ -495,10 +495,10 @@ static FORCE_INLINE int32_t convertToInteger(tVariant *pVariant, int64_t *result
     wchar_t *endPtr = NULL;
     
     SStrToken token = {0};
-    token.n = tSQLGetToken(pVariant->pz, &token.type);
+    token.n = tGetToken(pVariant->pz, &token.type);
     
     if (token.type == TK_MINUS || token.type == TK_PLUS) {
-      token.n = tSQLGetToken(pVariant->pz + token.n, &token.type);
+      token.n = tGetToken(pVariant->pz + token.n, &token.type);
     }
     
     if (token.type == TK_FLOAT) {

src/connector/jdbc/CMakeLists.txt

@@ -8,7 +8,7 @@ IF (TD_MVN_INSTALLED)
   ADD_CUSTOM_COMMAND(OUTPUT ${JDBC_CMD_NAME}
     POST_BUILD
     COMMAND mvn -Dmaven.test.skip=true install -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
-    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.28-dist.jar ${LIBRARY_OUTPUT_PATH}
+    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.29.jar ${LIBRARY_OUTPUT_PATH}
     COMMAND mvn -Dmaven.test.skip=true clean -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
     COMMENT "build jdbc driver")
   ADD_CUSTOM_TARGET(${JDBC_TARGET_NAME} ALL WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH} DEPENDS ${JDBC_CMD_NAME})

src/connector/jdbc/deploy-pom.xml

@@ -5,7 +5,7 @@
 
   <groupId>com.taosdata.jdbc</groupId>
   <artifactId>taos-jdbcdriver</artifactId>
-  <version>2.0.28</version>
+  <version>2.0.29</version>
   <packaging>jar</packaging>
 
   <name>JDBCDriver</name>

src/connector/jdbc/pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.taosdata.jdbc</groupId>
     <artifactId>taos-jdbcdriver</artifactId>
-    <version>2.0.28</version>
+    <version>2.0.29</version>
     <packaging>jar</packaging>
     <name>JDBCDriver</name>
     <url>https://github.com/taosdata/TDengine/tree/master/src/connector/jdbc</url>
@@ -122,6 +122,7 @@
                         <exclude>**/FailOverTest.java</exclude>
                         <exclude>**/InvalidResultSetPointerTest.java</exclude>
                         <exclude>**/RestfulConnectionTest.java</exclude>
+                        <exclude>**/TD4144Test.java</exclude>
                     </excludes>
                     <testFailureIgnore>true</testFailureIgnore>
                 </configuration>

src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java

@@ -84,9 +84,11 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
     }
 
     @Override
+    @Deprecated
     public InputStream getUnicodeStream(int columnIndex) throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_RESULTSET_CLOSED);
+        }
         
         throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
@@ -171,6 +173,7 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
     }
 
     @Override
+    @Deprecated
     public InputStream getUnicodeStream(String columnLabel) throws SQLException {
         return getUnicodeStream(findColumn(columnLabel));
     }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java

@@ -49,7 +49,7 @@ public class TSDBConnection extends AbstractConnection {
         this.databaseMetaData.setConnection(this);
     }
 
-    public TSDBJNIConnector getConnection() {
+    public TSDBJNIConnector getConnector() {
         return this.connector;
     }
 
@@ -58,7 +58,7 @@ public class TSDBConnection extends AbstractConnection {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_CONNECTION_CLOSED);
         }
 
-        return new TSDBStatement(this, this.connector);
+        return new TSDBStatement(this);
     }
 
     public TSDBSubscribe subscribe(String topic, String sql, boolean restart) throws SQLException {
@@ -74,14 +74,18 @@ public class TSDBConnection extends AbstractConnection {
     }
 
     public PreparedStatement prepareStatement(String sql) throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_CONNECTION_CLOSED);
-        return new TSDBPreparedStatement(this, this.connector, sql);
+        }
+        
+        return new TSDBPreparedStatement(this, sql);
     }
 
     public void close() throws SQLException {
-        if (isClosed)
+        if (isClosed) {
             return;
+        }
+        
         this.connector.closeConnection();
         this.isClosed = true;
     }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConstants.java

@@ -30,6 +30,7 @@ public abstract class TSDBConstants {
     public static final int JNI_FETCH_END = -6;
     public static final int JNI_OUT_OF_MEMORY = -7;
     // TSDB Data Types
+    public static final int TSDB_DATA_TYPE_NULL = 0;
     public static final int TSDB_DATA_TYPE_BOOL = 1;
     public static final int TSDB_DATA_TYPE_TINYINT = 2;
     public static final int TSDB_DATA_TYPE_SMALLINT = 3;

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java

@@ -104,7 +104,7 @@ public class TSDBDriver extends AbstractDriver {
 
     static {
         try {
-            java.sql.DriverManager.registerDriver(new TSDBDriver());
+            DriverManager.registerDriver(new TSDBDriver());
         } catch (SQLException e) {
             throw TSDBError.createRuntimeException(TSDBErrorNumbers.ERROR_CANNOT_REGISTER_JNI_DRIVER, e);
         }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBJNIConnector.java

@@ -18,6 +18,7 @@ package com.taosdata.jdbc;
 
 import com.taosdata.jdbc.utils.TaosInfo;
 
+import java.nio.ByteBuffer;
 import java.sql.SQLException;
 import java.sql.SQLWarning;
 import java.util.List;
@@ -29,10 +30,13 @@ public class TSDBJNIConnector {
     private static volatile Boolean isInitialized = false;
 
     private TaosInfo taosInfo = TaosInfo.getInstance();
+    
     // Connection pointer used in C
     private long taos = TSDBConstants.JNI_NULL_POINTER;
+    
     // result set status in current connection
-    private boolean isResultsetClosed = true;
+    private boolean isResultsetClosed;
+
     private int affectedRows = -1;
 
     static {
@@ -75,7 +79,6 @@ public class TSDBJNIConnector {
 
     public boolean connect(String host, int port, String dbName, String user, String password) throws SQLException {
         if (this.taos != TSDBConstants.JNI_NULL_POINTER) {
-//            this.closeConnectionImp(this.taos);
             closeConnection();
             this.taos = TSDBConstants.JNI_NULL_POINTER;
         }
@@ -97,12 +100,6 @@ public class TSDBJNIConnector {
      * @throws SQLException
      */
     public long executeQuery(String sql) throws SQLException {
-        // close previous result set if the user forgets to invoke the
-        // free method to close previous result set.
-//        if (!this.isResultsetClosed) {
-//            freeResultSet(taosResultSetPointer);
-//        }
-
         Long pSql = 0l;
         try {
             pSql = this.executeQueryImp(sql.getBytes(TaosGlobalConfig.getCharset()), this.taos);
@@ -135,6 +132,7 @@ public class TSDBJNIConnector {
 
         // Try retrieving result set for the executed SQL using the current connection pointer. 
         pSql = this.getResultSetImp(this.taos, pSql);
+        // if pSql == 0L that means resultset is closed
         isResultsetClosed = (pSql == TSDBConstants.JNI_NULL_POINTER);
 
         return pSql;
@@ -169,37 +167,14 @@ public class TSDBJNIConnector {
     private native long isUpdateQueryImp(long connection, long pSql);
 
     /**
-     * Free resultset operation from C to release resultset pointer by JNI
+     * Free result set operation from C to release result set pointer by JNI
      */
     public int freeResultSet(long pSql) {
-        int res = TSDBConstants.JNI_SUCCESS;
-//        if (result != taosResultSetPointer && taosResultSetPointer != TSDBConstants.JNI_NULL_POINTER) {
-//            throw new RuntimeException("Invalid result set pointer");
-//        }
-
-//        if (taosResultSetPointer != TSDBConstants.JNI_NULL_POINTER) {
-        res = this.freeResultSetImp(this.taos, pSql);
-//            taosResultSetPointer = TSDBConstants.JNI_NULL_POINTER;
-//        }
-
+        int res = this.freeResultSetImp(this.taos, pSql);
         isResultsetClosed = true;
         return res;
     }
 
-    /**
-     * Close the open result set which is associated to the current connection. If the result set is already
-     * closed, return 0 for success.
-     */
-//    public int freeResultSet() {
-//        int resCode = TSDBConstants.JNI_SUCCESS;
-//        if (!isResultsetClosed) {
-//            resCode = this.freeResultSetImp(this.taos, this.taosResultSetPointer);
-//            taosResultSetPointer = TSDBConstants.JNI_NULL_POINTER;
-//            isResultsetClosed = true;
-//        }
-//        return resCode;
-//    }
-
     private native int freeResultSetImp(long connection, long result);
 
     /**
@@ -246,6 +221,7 @@ public class TSDBJNIConnector {
      */
     public void closeConnection() throws SQLException {
         int code = this.closeConnectionImp(this.taos);
+        
         if (code < 0) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_CONNECTION_NULL);
         } else if (code == 0) {
@@ -253,6 +229,7 @@ public class TSDBJNIConnector {
         } else {
             throw new SQLException("Undefined error code returned by TDengine when closing a connection");
         }
+        
         // invoke closeConnectionImpl only here
         taosInfo.connect_close_increment();
     }
@@ -289,7 +266,7 @@ public class TSDBJNIConnector {
     private native void unsubscribeImp(long subscription, boolean isKeep);
 
     /**
-     * Validate if a <I>create table</I> sql statement is correct without actually creating that table
+     * Validate if a <I>create table</I> SQL statement is correct without actually creating that table
      */
     public boolean validateCreateTableSql(String sql) {
         int res = validateCreateTableSqlImp(taos, sql.getBytes());
@@ -297,4 +274,66 @@ public class TSDBJNIConnector {
     }
 
     private native int validateCreateTableSqlImp(long connection, byte[] sqlBytes);
+    
+	public long prepareStmt(String sql) throws SQLException {
+    	Long stmt = 0L;
+    	try {
+    	stmt = prepareStmtImp(sql.getBytes(), this.taos);
+    	} catch (Exception e) {
+            e.printStackTrace();
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_ENCODING);
+        }
+    	
+        if (stmt == TSDBConstants.JNI_CONNECTION_NULL) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_CONNECTION_NULL);
+        }
+        
+        if (stmt == TSDBConstants.JNI_SQL_NULL) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_SQL_NULL);
+        }
+        
+        if (stmt == TSDBConstants.JNI_OUT_OF_MEMORY) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_OUT_OF_MEMORY);
+        }
+        
+    	return stmt;
+    }
+    
+    private native long prepareStmtImp(byte[] sql, long con);
+    
+    public void setBindTableName(long stmt, String tableName) throws SQLException {
+		int code = setBindTableNameImp(stmt, tableName, this.taos);
+		if (code != TSDBConstants.JNI_SUCCESS) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "failed to set table name");
+		}
+	}
+    
+    private native int setBindTableNameImp(long stmt, String name, long conn);
+    
+    public void bindColumnDataArray(long stmt, ByteBuffer colDataList, ByteBuffer lengthList, ByteBuffer isNullList, int type, int bytes, int numOfRows,int columnIndex) throws SQLException {
+    	int code = bindColDataImp(stmt, colDataList.array(), lengthList.array(), isNullList.array(), type, bytes, numOfRows, columnIndex, this.taos);
+    	if (code != TSDBConstants.JNI_SUCCESS) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "failed to bind column data");
+    	}
+	}
+    
+    private native int bindColDataImp(long stmt, byte[] colDataList, byte[] lengthList, byte[] isNullList, int type, int bytes, int numOfRows, int columnIndex, long conn);
+    
+    public void executeBatch(long stmt) throws SQLException {
+    	int code = executeBatchImp(stmt, this.taos);
+    	if (code != TSDBConstants.JNI_SUCCESS) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "failed to execute batch bind");
+    	}
+    }
+    
+    private native int executeBatchImp(long stmt, long con);
+    
+    public void closeBatch(long stmt) throws SQLException {
+    	int code = closeStmt(stmt, this.taos);
+    	if (code != TSDBConstants.JNI_SUCCESS) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "failed to close batch bind");
+    	}
+    }
+    
+    private native int closeStmt(long stmt, long con);
 }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBPreparedStatement.java

@@ -14,36 +14,44 @@
  *****************************************************************************/
 package com.taosdata.jdbc;
 
+import com.taosdata.jdbc.utils.Utils;
+
 import java.io.InputStream;
 import java.io.Reader;
+import java.io.UnsupportedEncodingException;
 import java.math.BigDecimal;
 import java.net.URL;
-import java.nio.charset.Charset;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
 import java.sql.*;
 import java.util.ArrayList;
 import java.util.Calendar;
+import java.util.Collections;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 /*
- * TDengine only supports a subset of the standard SQL, thus this implemetation of the
+ * TDengine only supports a subset of the standard SQL, thus this implementation of the
  * standard JDBC API contains more or less some adjustments customized for certain
  * compatibility needs.
  */
 public class TSDBPreparedStatement extends TSDBStatement implements PreparedStatement {
-
     private String rawSql;
     private Object[] parameters;
     private boolean isPrepared;
     
+    private ArrayList<ColumnInfo> colData;
+    private String tableName;
+    private long nativeStmtHandle = 0;
+    
     private volatile TSDBParameterMetaData parameterMetaData;
 
-    TSDBPreparedStatement(TSDBConnection connection, TSDBJNIConnector connecter, String sql) {
-        super(connection, connecter);
+    TSDBPreparedStatement(TSDBConnection connection, String sql) {
+		super(connection);
         init(sql);
 
+        int parameterCnt = 0;
         if (sql.contains("?")) {
-            int parameterCnt = 0;
             for (int i = 0; i < sql.length(); i++) {
                 if ('?' == sql.charAt(i)) {
                     parameterCnt++;
@@ -52,6 +60,12 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
             parameters = new Object[parameterCnt];
             this.isPrepared = true;
         }
+
+		if (parameterCnt > 1) {
+	        // the table name is also a parameter, so ignore it.
+	        this.colData = new ArrayList<ColumnInfo>(parameterCnt - 1);
+	        this.colData.addAll(Collections.nCopies(parameterCnt - 1, null));
+		}
     }
 
     private void init(String sql) {
@@ -126,28 +140,7 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
      * @return a string of the native sql statement for TSDB
      */
     private String getNativeSql(String rawSql) throws SQLException {
-        String sql = rawSql;
-        for (int i = 0; i < parameters.length; ++i) {
-            Object para = parameters[i];
-            if (para != null) {
-                String paraStr;
-                if (para instanceof byte[]) {
-                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
-                } else {
-                    paraStr = para.toString();
-                }
-                // if para is timestamp or String or byte[] need to translate ' character
-                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
-                    paraStr = paraStr.replaceAll("'", "\\\\\\\\'");
-                    paraStr = "'" + paraStr + "'";
-                }
-                sql = sql.replaceFirst("[?]", paraStr);
-            } else {
-                sql = sql.replaceFirst("[?]", "NULL");
-            }
-        }
-        clearParameters();
-        return sql;
+        return Utils.getNativeSql(rawSql, this.parameters);
     }
 
     @Override
@@ -275,15 +268,19 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        setObject(parameterIndex,x);
+        setObject(parameterIndex, x);
     }
 
     @Override
     public void setObject(int parameterIndex, Object x) throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        if (parameterIndex < 1 && parameterIndex >= parameters.length)
+        }
+        
+        if (parameterIndex < 1 && parameterIndex >= parameters.length) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_PARAMETER_INDEX_OUT_RANGE);
+        }
+        
         parameters[parameterIndex - 1] = x;
     }
 
@@ -320,8 +317,9 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
 
     @Override
     public void setRef(int parameterIndex, Ref x) throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
+        }
         
         throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
@@ -535,4 +533,276 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
+    
+    ///////////////////////////////////////////////////////////////////////
+    // NOTE: the following APIs are not JDBC compatible
+    // set the bind table name
+    private static class ColumnInfo {
+    	@SuppressWarnings("rawtypes")
+		private ArrayList data;
+    	private int       type;
+    	private int       bytes;
+    	private boolean   typeIsSet;
+    	
+    	public ColumnInfo() {
+    		this.typeIsSet = false;
+    	}
+    	
+    	public void setType(int type) throws SQLException {
+    		if (this.isTypeSet()) {
+                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "column data type has been set");
+    		}
+
+    		this.typeIsSet = true;
+    		this.type = type;
+    	}
+    	
+    	public boolean isTypeSet() {
+    		return this.typeIsSet;
+    	}
+    };
+    
+    public void setTableName(String name) {
+    	this.tableName = name;
+    }
+    
+    public <T> void setValueImpl(int columnIndex, ArrayList<T> list, int type, int bytes) throws SQLException {
+    	ColumnInfo col = (ColumnInfo) this.colData.get(columnIndex);
+    	if (col == null) {
+    		ColumnInfo p = new ColumnInfo();
+    		p.setType(type);
+    		p.bytes = bytes;
+    		p.data = (ArrayList<?>) list.clone();
+    		this.colData.set(columnIndex, p);
+    	} else {
+    		if (col.type != type) {
+                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "column data type mismatch");
+    		}
+    		col.data.addAll(list);
+    	}
+    }
+    
+    public void setInt(int columnIndex, ArrayList<Integer> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_INT, Integer.BYTES);
+    }
+    
+    public void setFloat(int columnIndex, ArrayList<Float> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_FLOAT, Float.BYTES);
+    }
+    
+    public void setTimestamp(int columnIndex, ArrayList<Long> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP, Long.BYTES);
+    }
+    
+    public void setLong(int columnIndex, ArrayList<Long> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_BIGINT, Long.BYTES);
+    }
+    
+    public void setDouble(int columnIndex, ArrayList<Double> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_DOUBLE, Double.BYTES);
+    }
+    
+    public void setBoolean(int columnIndex, ArrayList<Boolean> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_BOOL, Byte.BYTES);
+    }
+    
+    public void setByte(int columnIndex, ArrayList<Byte> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_TINYINT, Byte.BYTES);
+    }
+    
+    public void setShort(int columnIndex, ArrayList<Short> list) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_SMALLINT, Short.BYTES);
+    }
+    
+    public void setString(int columnIndex, ArrayList<String> list, int size) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_BINARY, size);
+    }
+    
+    // note: expand the required space for each NChar character
+    public void setNString(int columnIndex, ArrayList<String> list, int size) throws SQLException {
+    	setValueImpl(columnIndex, list, TSDBConstants.TSDB_DATA_TYPE_NCHAR, size * Integer.BYTES);
+    }
+    
+    public void columnDataAddBatch() throws SQLException {
+    	// pass the data block to native code
+		if (rawSql == null) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "sql statement not set yet");
+		}
+		
+		// table name is not set yet, abort
+		if (this.tableName == null) {
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "table name not set yet");
+		}
+		
+		int numOfCols = this.colData.size();
+		if (numOfCols == 0) {
+			throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "column data not bind");
+		}
+		
+		TSDBJNIConnector connector = ((TSDBConnection) this.getConnection()).getConnector();
+		this.nativeStmtHandle = connector.prepareStmt(rawSql);
+		connector.setBindTableName(this.nativeStmtHandle, this.tableName);
+		
+		ColumnInfo colInfo = (ColumnInfo) this.colData.get(0);
+		if (colInfo == null) {
+			throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "column data not bind");
+		}
+		
+		int rows = colInfo.data.size();
+		for (int i = 0; i < numOfCols; ++i) {
+			ColumnInfo col1 = this.colData.get(i);
+			if (col1 == null || !col1.isTypeSet()) {
+                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "column data not bind");
+			}
+			
+			if (rows != col1.data.size()) {
+                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "the rows in column data not identical");
+			}
+			
+			ByteBuffer colDataList = ByteBuffer.allocate(rows * col1.bytes);
+			colDataList.order(ByteOrder.LITTLE_ENDIAN);
+			
+            ByteBuffer lengthList = ByteBuffer.allocate(rows * Integer.BYTES);
+            lengthList.order(ByteOrder.LITTLE_ENDIAN);
+            
+            ByteBuffer isNullList = ByteBuffer.allocate(rows * Byte.BYTES);
+            isNullList.order(ByteOrder.LITTLE_ENDIAN);
+            
+			switch (col1.type) {
+				case TSDBConstants.TSDB_DATA_TYPE_INT: {
+					for (int j = 0; j < rows; ++j) {
+						Integer val = (Integer) col1.data.get(j);
+						colDataList.putInt(val == null? Integer.MIN_VALUE:val);						
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_TINYINT: {
+					for (int j = 0; j < rows; ++j) {
+						Byte val = (Byte) col1.data.get(j);
+						colDataList.put(val == null? 0:val);
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_BOOL: {
+					for (int j = 0; j < rows; ++j) {
+						Boolean val = (Boolean) col1.data.get(j);
+						if (val == null) {
+							colDataList.put((byte) 0);
+						} else {
+							colDataList.put((byte) (val? 1:0));
+						}
+						
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_SMALLINT: {
+					for (int j = 0; j < rows; ++j) {
+						Short val = (Short) col1.data.get(j);
+						colDataList.putShort(val == null? 0:val);
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP:
+				case TSDBConstants.TSDB_DATA_TYPE_BIGINT: {
+					for (int j = 0; j < rows; ++j) {
+						Long val = (Long) col1.data.get(j);
+						colDataList.putLong(val == null? 0:val);
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_FLOAT: {
+					for (int j = 0; j < rows; ++j) {
+						Float val = (Float) col1.data.get(j);
+						colDataList.putFloat(val == null? 0:val);
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+	
+				case TSDBConstants.TSDB_DATA_TYPE_DOUBLE: {
+					for (int j = 0; j < rows; ++j) {
+						Double val = (Double) col1.data.get(j);
+						colDataList.putDouble(val == null? 0:val);
+						isNullList.put((byte) (val == null? 1:0));
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_NCHAR: 
+				case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
+					String charset = TaosGlobalConfig.getCharset();
+					for (int j = 0; j < rows; ++j) {
+						String val = (String) col1.data.get(j);
+
+						colDataList.position(j * col1.bytes);  // seek to the correct position
+						if (val != null) {
+							byte[] b = null;
+							try {
+								if (col1.type == TSDBConstants.TSDB_DATA_TYPE_BINARY) {
+									b = val.getBytes();
+								} else {
+									b = val.getBytes(charset);
+								}
+							} catch (UnsupportedEncodingException e) {
+								e.printStackTrace();
+							}
+							
+							if (val.length() > col1.bytes) {
+				                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "string data too long");
+							}
+							
+							colDataList.put(b);
+							lengthList.putInt(b.length);
+							isNullList.put((byte) 0);
+						} else {
+							lengthList.putInt(0);
+							isNullList.put((byte) 1);
+						}
+					}
+					break;
+				}
+				
+				case TSDBConstants.TSDB_DATA_TYPE_UTINYINT:
+				case TSDBConstants.TSDB_DATA_TYPE_USMALLINT:
+				case TSDBConstants.TSDB_DATA_TYPE_UINT:
+				case TSDBConstants.TSDB_DATA_TYPE_UBIGINT: {
+	                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN, "not support data types");
+				}
+			};
+			
+			connector.bindColumnDataArray(this.nativeStmtHandle, colDataList, lengthList, isNullList, col1.type, col1.bytes, rows, i);
+		}
+    }
+    
+	public void columnDataExecuteBatch() throws SQLException {
+		TSDBJNIConnector connector = ((TSDBConnection) this.getConnection()).getConnector();
+		connector.executeBatch(this.nativeStmtHandle);
+		this.columnDataClearBatch();
+	}
+    
+    public void columnDataClearBatch() {
+    	int size = this.colData.size();
+    	this.colData.clear();
+    	
+        this.colData.addAll(Collections.nCopies(size, null));
+        this.tableName = null;   // clear the table name
+    }
+    
+    public void columnDataCloseBatch() throws SQLException {
+		TSDBJNIConnector connector = ((TSDBConnection) this.getConnection()).getConnector();
+		connector.closeBatch(this.nativeStmtHandle);
+		
+		this.nativeStmtHandle = 0L;
+		this.tableName = null;
+    }
 }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSet.java

@@ -109,6 +109,8 @@ public class TSDBResultSet extends AbstractResultSet implements ResultSet {
     public void close() throws SQLException {
         if (isClosed)
             return;
+        if (this.statement == null)
+            return;
         if (this.jniConnector != null) {
             int code = this.jniConnector.freeResultSet(this.resultSetPointer);
             if (code == TSDBConstants.JNI_CONNECTION_NULL) {
@@ -461,12 +463,13 @@ public class TSDBResultSet extends AbstractResultSet implements ResultSet {
     }
 
     public boolean isClosed() throws SQLException {
-        if (isClosed)
-            return true;
-        if (jniConnector != null) {
-            isClosed = jniConnector.isResultsetClosed();
-        }
         return isClosed;
+//        if (isClosed)
+//            return true;
+//        if (jniConnector != null) {
+//            isClosed = jniConnector.isResultsetClosed();
+//        }
+//        return isClosed;
     }
 
     public String getNString(int columnIndex) throws SQLException {

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetBlockData.java

@@ -29,6 +29,8 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
+import com.taosdata.jdbc.utils.NullType;
+
 public class TSDBResultSetBlockData {
     private int numOfRows = 0;
     private int rowIndex = 0;
@@ -164,59 +166,7 @@ public class TSDBResultSetBlockData {
         }
     }
 
-    private static class NullType {
-        private static final byte NULL_BOOL_VAL = 0x2;
-        private static final String NULL_STR = "null";
     
-        public String toString() {
-            return NullType.NULL_STR;
-        }
-
-        public static boolean isBooleanNull(byte val) {
-            return val == NullType.NULL_BOOL_VAL;
-        }
-
-        private static boolean isTinyIntNull(byte val) {
-            return val == Byte.MIN_VALUE;
-        }
-
-        private static boolean isSmallIntNull(short val) {
-            return val == Short.MIN_VALUE;
-        }
-
-        private static boolean isIntNull(int val) {
-            return val == Integer.MIN_VALUE;
-        }
-
-        private static boolean isBigIntNull(long val) {
-            return val == Long.MIN_VALUE;
-        }
-
-        private static boolean isFloatNull(float val) {
-            return Float.isNaN(val);
-        }
-
-        private static boolean isDoubleNull(double val) {
-            return Double.isNaN(val);
-        }
-
-        private static boolean isBinaryNull(byte[] val, int length) {
-            if (length != Byte.BYTES) {
-                return false;
-            }
-
-            return val[0] == 0xFF;
-        }
-
-        private static boolean isNcharNull(byte[] val, int length) {
-            if (length != Integer.BYTES) {
-                return false;
-            }
-
-            return (val[0] & val[1] & val[2] & val[3]) == 0xFF;
-        }
-
-    }
 
     /**
      * The original type may not be a string type, but will be converted to by
@@ -488,8 +438,8 @@ public class TSDBResultSetBlockData {
                 }
 
                 try {
-                    String ss = TaosGlobalConfig.getCharset();
-                    return new String(dest, ss);
+                    String charset = TaosGlobalConfig.getCharset();
+                    return new String(dest, charset);
                 } catch (UnsupportedEncodingException e) {
                     e.printStackTrace();
                 }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetRowData.java

@@ -84,7 +84,8 @@ public class TSDBResultSetRowData {
         data.set(col, value);
     }
 
-    public int getInt(int col, int srcType) throws SQLException {
+    @SuppressWarnings("deprecation")
+	public int getInt(int col, int srcType) throws SQLException {
         Object obj = data.get(col);
 
         switch (srcType) {
@@ -128,7 +129,7 @@ public class TSDBResultSetRowData {
                 long value = (long) obj;
                 if (value < 0)
                     throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_NUMERIC_VALUE_OUT_OF_RANGE);
-                return new Long(value).intValue();
+                return Long.valueOf(value).intValue();
             }
         }
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java

@@ -19,8 +19,6 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 
 public class TSDBStatement extends AbstractStatement {
-
-    private TSDBJNIConnector connector;
     /**
      * Status of current statement
      */
@@ -29,29 +27,26 @@ public class TSDBStatement extends AbstractStatement {
     private TSDBConnection connection;
     private TSDBResultSet resultSet;
 
-    public void setConnection(TSDBConnection connection) {
+    TSDBStatement(TSDBConnection connection) {
         this.connection = connection;
     }
 
-    TSDBStatement(TSDBConnection connection, TSDBJNIConnector connector) {
-        this.connection = connection;
-        this.connector = connector;
-    }
-
     public ResultSet executeQuery(String sql) throws SQLException {
         // check if closed
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
+        }
+        
         //TODO: 如果在executeQuery方法中执行insert语句，那么先执行了SQL，再通过pSql来检查是否为一个insert语句，但这个insert SQL已经执行成功了
 
         // execute query
-        long pSql = this.connector.executeQuery(sql);
+        long pSql = this.connection.getConnector().executeQuery(sql);
         // if pSql is create/insert/update/delete/alter SQL
-        if (this.connector.isUpdateQuery(pSql)) {
-            this.connector.freeResultSet(pSql);
+        if (this.connection.getConnector().isUpdateQuery(pSql)) {
+            this.connection.getConnector().freeResultSet(pSql);
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_WITH_EXECUTEQUERY);
         }
-        TSDBResultSet res = new TSDBResultSet(this, this.connector, pSql);
+        TSDBResultSet res = new TSDBResultSet(this, this.connection.getConnector(), pSql);
         res.setBatchFetch(this.connection.getBatchFetch());
         return res;
     }
@@ -60,14 +55,14 @@ public class TSDBStatement extends AbstractStatement {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
 
-        long pSql = this.connector.executeQuery(sql);
+        long pSql = this.connection.getConnector().executeQuery(sql);
         // if pSql is create/insert/update/delete/alter SQL
-        if (!this.connector.isUpdateQuery(pSql)) {
-            this.connector.freeResultSet(pSql);
+        if (!this.connection.getConnector().isUpdateQuery(pSql)) {
+            this.connection.getConnector().freeResultSet(pSql);
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_WITH_EXECUTEUPDATE);
         }
-        int affectedRows = this.connector.getAffectedRows(pSql);
-        this.connector.freeResultSet(pSql);
+        int affectedRows = this.connection.getConnector().getAffectedRows(pSql);
+        this.connection.getConnector().freeResultSet(pSql);
         return affectedRows;
     }
 
@@ -81,30 +76,29 @@ public class TSDBStatement extends AbstractStatement {
 
     public boolean execute(String sql) throws SQLException {
         // check if closed
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
+        }
+        
         // execute query
-        long pSql = this.connector.executeQuery(sql);
+        long pSql = this.connection.getConnector().executeQuery(sql);
         // if pSql is create/insert/update/delete/alter SQL
-        if (this.connector.isUpdateQuery(pSql)) {
-            this.affectedRows = this.connector.getAffectedRows(pSql);
-            this.connector.freeResultSet(pSql);
+        if (this.connection.getConnector().isUpdateQuery(pSql)) {
+            this.affectedRows = this.connection.getConnector().getAffectedRows(pSql);
+            this.connection.getConnector().freeResultSet(pSql);
             return false;
         }
 
-        this.resultSet = new TSDBResultSet(this, this.connector, pSql);
+        this.resultSet = new TSDBResultSet(this, this.connection.getConnector(), pSql);
         this.resultSet.setBatchFetch(this.connection.getBatchFetch());
         return true;
     }
 
     public ResultSet getResultSet() throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-//        long resultSetPointer = connector.getResultSet();
-//        TSDBResultSet resSet = null;
-//        if (resultSetPointer != TSDBConstants.JNI_NULL_POINTER) {
-//            resSet = new TSDBResultSet(connector, resultSetPointer);
-//        }
+        }
+        
         return this.resultSet;
     }
 
@@ -115,13 +109,21 @@ public class TSDBStatement extends AbstractStatement {
     }
 
     public Connection getConnection() throws SQLException {
-        if (isClosed())
+        if (isClosed()) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        if (this.connector == null)
+        }
+        
+        if (this.connection.getConnector() == null) {
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_CONNECTION_NULL);
+        }
+        
         return this.connection;
     }
     
+    public void setConnection(TSDBConnection connection) {
+        this.connection = connection;
+    }
+
     public boolean isClosed() throws SQLException {
         return isClosed;
     }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDriver.java

@@ -17,7 +17,7 @@ public class RestfulDriver extends AbstractDriver {
 
     static {
         try {
-            java.sql.DriverManager.registerDriver(new RestfulDriver());
+            DriverManager.registerDriver(new RestfulDriver());
         } catch (SQLException e) {
             throw TSDBError.createRuntimeException(TSDBErrorNumbers.ERROR_URL_NOT_SET, e);
         }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulPreparedStatement.java

@@ -2,12 +2,12 @@ package com.taosdata.jdbc.rs;
 
 import com.taosdata.jdbc.TSDBError;
 import com.taosdata.jdbc.TSDBErrorNumbers;
+import com.taosdata.jdbc.utils.Utils;
 
 import java.io.InputStream;
 import java.io.Reader;
 import java.math.BigDecimal;
 import java.net.URL;
-import java.nio.charset.Charset;
 import java.sql.*;
 import java.util.Calendar;
 
@@ -21,6 +21,7 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
     public RestfulPreparedStatement(RestfulConnection conn, String database, String sql) {
         super(conn, database);
         this.rawSql = sql;
+
         if (sql.contains("?")) {
             int parameterCnt = 0;
             for (int i = 0; i < sql.length(); i++) {
@@ -58,29 +59,14 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
         return executeUpdate(sql);
     }
 
-    private String getNativeSql(String rawSql) throws SQLException {
-        String sql = rawSql;
-        for (int i = 0; i < parameters.length; ++i) {
-            Object para = parameters[i];
-            if (para != null) {
-                String paraStr;
-                if (para instanceof byte[]) {
-                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
-                } else {
-                    paraStr = para.toString();
-                }
-                // if para is timestamp or String or byte[] need to translate ' character
-                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
-                    paraStr = paraStr.replaceAll("'", "\\\\\\\\'");
-                    paraStr = "'" + paraStr + "'";
-                }
-                sql = sql.replaceFirst("[?]", paraStr);
-            } else {
-                sql = sql.replaceFirst("[?]", "NULL");
-            }
-        }
-        clearParameters();
-        return sql;
+    /****
+     * 将rawSql转换成一条可执行的sql语句，使用属性parameters中的变脸进行替换
+     * 对于insert into ?.? (?,?,?) using ?.? (?,?,?) tags(?, ?, ?) values(?, ?, ?)
+     * @param rawSql，可能是insert、select或其他，使用?做占位符
+     * @return
+     */
+    private String getNativeSql(String rawSql) {
+        return Utils.getNativeSql(rawSql, this.parameters);
     }
 
     @Override
@@ -221,7 +207,7 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
 
-        setObject(parameterIndex,x);
+        setObject(parameterIndex, x);
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSet.java

@@ -6,11 +6,13 @@ import com.google.common.primitives.Ints;
 import com.google.common.primitives.Longs;
 import com.google.common.primitives.Shorts;
 import com.taosdata.jdbc.*;
+import com.taosdata.jdbc.utils.Utils;
 
 import java.math.BigDecimal;
 import java.sql.*;
 import java.time.Instant;
 import java.time.ZoneOffset;
+import java.time.format.DateTimeParseException;
 import java.util.ArrayList;
 import java.util.Calendar;
 
@@ -18,14 +20,13 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
     private volatile boolean isClosed;
     private int pos = -1;
 
-
     private final String database;
     private final Statement statement;
     // data
-    private final ArrayList<ArrayList<Object>> resultSet;
+    private final ArrayList<ArrayList<Object>> resultSet = new ArrayList<>();
     // meta
-    private ArrayList<String> columnNames;
-    private ArrayList<Field> columns;
+    private ArrayList<String> columnNames = new ArrayList<>();
+    private ArrayList<Field> columns = new ArrayList<>();
     private RestfulResultSetMetaData metaData;
 
     /**
@@ -37,10 +38,46 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         this.database = database;
         this.statement = statement;
 
-        // column metadata
+        // get column metadata
         JSONArray columnMeta = resultJson.getJSONArray("column_meta");
-        columnNames = new ArrayList<>();
-        columns = new ArrayList<>();
+        // get row data
+        JSONArray data = resultJson.getJSONArray("data");
+        if (data == null || data.isEmpty()) {
+            columnNames.clear();
+            columns.clear();
+            this.resultSet.clear();
+            return;
+        }
+        // get head
+        JSONArray head = resultJson.getJSONArray("head");
+        // get rows
+        Integer rows = resultJson.getInteger("rows");
+        // parse column_meta
+        if (columnMeta != null) {
+            parseColumnMeta_new(columnMeta);
+        } else {
+            parseColumnMeta_old(head, data, rows);
+        }
+        this.metaData = new RestfulResultSetMetaData(this.database, columns, this);
+        // parse row data
+        resultSet.clear();
+        for (int rowIndex = 0; rowIndex < data.size(); rowIndex++) {
+            ArrayList row = new ArrayList();
+            JSONArray jsonRow = data.getJSONArray(rowIndex);
+            for (int colIndex = 0; colIndex < this.metaData.getColumnCount(); colIndex++) {
+                row.add(parseColumnData(jsonRow, colIndex, columns.get(colIndex).taos_type));
+            }
+            resultSet.add(row);
+        }
+    }
+
+    /***
+     * use this method after TDengine-2.0.18.0 to parse column meta, restful add column_meta in resultSet
+     * @Param columnMeta
+     */
+    private void parseColumnMeta_new(JSONArray columnMeta) throws SQLException {
+        columnNames.clear();
+        columns.clear();
         for (int colIndex = 0; colIndex < columnMeta.size(); colIndex++) {
             JSONArray col = columnMeta.getJSONArray(colIndex);
             String col_name = col.getString(0);
@@ -50,23 +87,55 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             columnNames.add(col_name);
             columns.add(new Field(col_name, col_type, col_length, "", taos_type));
         }
-        this.metaData = new RestfulResultSetMetaData(this.database, columns, this);
+    }
 
-        // row data
-        JSONArray data = resultJson.getJSONArray("data");
-        resultSet = new ArrayList<>();
-        for (int rowIndex = 0; rowIndex < data.size(); rowIndex++) {
-            ArrayList row = new ArrayList();
-            JSONArray jsonRow = data.getJSONArray(rowIndex);
-            for (int colIndex = 0; colIndex < jsonRow.size(); colIndex++) {
-                row.add(parseColumnData(jsonRow, colIndex, columns.get(colIndex).taos_type));
+    /**
+     * use this method before TDengine-2.0.18.0 to parse column meta
+     */
+    private void parseColumnMeta_old(JSONArray head, JSONArray data, int rows) {
+        columnNames.clear();
+        columns.clear();
+        for (int colIndex = 0; colIndex < head.size(); colIndex++) {
+            String col_name = head.getString(colIndex);
+            columnNames.add(col_name);
+
+            int col_type = Types.NULL;
+            int col_length = 0;
+            int taos_type = TSDBConstants.TSDB_DATA_TYPE_NULL;
+
+            JSONArray row0Json = data.getJSONArray(0);
+            if (colIndex < row0Json.size()) {
+                Object value = row0Json.get(colIndex);
+                if (value instanceof Boolean) {
+                    col_type = Types.BOOLEAN;
+                    col_length = 1;
+                    taos_type = TSDBConstants.TSDB_DATA_TYPE_BOOL;
+                }
+                if (value instanceof Byte || value instanceof Short || value instanceof Integer || value instanceof Long) {
+                    col_type = Types.BIGINT;
+                    col_length = 8;
+                    taos_type = TSDBConstants.TSDB_DATA_TYPE_BIGINT;
+                }
+                if (value instanceof Float || value instanceof Double || value instanceof BigDecimal) {
+                    col_type = Types.DOUBLE;
+                    col_length = 8;
+                    taos_type = TSDBConstants.TSDB_DATA_TYPE_DOUBLE;
+                }
+                if (value instanceof String) {
+                    col_type = Types.NCHAR;
+                    col_length = ((String) value).length();
+                    taos_type = TSDBConstants.TSDB_DATA_TYPE_NCHAR;
+                }
             }
-            resultSet.add(row);
+            columns.add(new Field(col_name, col_type, col_length, "", taos_type));
         }
     }
 
+
     private Object parseColumnData(JSONArray row, int colIndex, int taosType) throws SQLException {
         switch (taosType) {
+            case TSDBConstants.TSDB_DATA_TYPE_NULL:
+                return null;
             case TSDBConstants.TSDB_DATA_TYPE_BOOL:
                 return row.getBoolean(colIndex);
             case TSDBConstants.TSDB_DATA_TYPE_TINYINT:
@@ -290,8 +359,10 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return 0;
         }
         wasNull = false;
-        if (value instanceof Float || value instanceof Double)
+        if (value instanceof Float)
             return (float) value;
+        if (value instanceof Double)
+            return new Float((Double) value);
         return Float.parseFloat(value.toString());
     }
 
@@ -329,6 +400,9 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return Shorts.toByteArray((short) value);
         if (value instanceof Byte)
             return new byte[]{(byte) value};
+        if (value instanceof Timestamp) {
+            return Utils.formatTimestamp((Timestamp) value).getBytes();
+        }
 
         return value.toString().getBytes();
     }
@@ -342,7 +416,9 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return null;
         if (value instanceof Timestamp)
             return new Date(((Timestamp) value).getTime());
-        return Date.valueOf(value.toString());
+        Date date = null;
+        date = Utils.parseDate(value.toString());
+        return date;
     }
 
     @Override
@@ -354,7 +430,13 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return null;
         if (value instanceof Timestamp)
             return new Time(((Timestamp) value).getTime());
-        return Time.valueOf(value.toString());
+        Time time = null;
+        try {
+            time = Utils.parseTime(value.toString());
+        } catch (DateTimeParseException e) {
+            time = null;
+        }
+        return time;
     }
 
     @Override
@@ -366,14 +448,20 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return null;
         if (value instanceof Timestamp)
             return (Timestamp) value;
-//        if (value instanceof Long) {
-//            if (1_0000_0000_0000_0L > (long) value)
-//                return Timestamp.from(Instant.ofEpochMilli((long) value));
-//            long epochSec = (long) value / 1000_000L;
-//            long nanoAdjustment = (long) ((long) value % 1000_000L * 1000);
-//            return Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
-//        }
-        return Timestamp.valueOf(value.toString());
+        if (value instanceof Long) {
+            if (1_0000_0000_0000_0L > (long) value)
+                return Timestamp.from(Instant.ofEpochMilli((long) value));
+            long epochSec = (long) value / 1000_000L;
+            long nanoAdjustment = (long) value % 1000_000L * 1000;
+            return Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
+        }
+        Timestamp ret;
+        try {
+            ret = Utils.parseTimestamp(value.toString());
+        } catch (Exception e) {
+            ret = null;
+        }
+        return ret;
     }
 
     @Override
@@ -415,7 +503,13 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return new BigDecimal(Double.valueOf(value.toString()));
         if (value instanceof Timestamp)
             return new BigDecimal(((Timestamp) value).getTime());
-        return new BigDecimal(value.toString());
+        BigDecimal ret;
+        try {
+            ret = new BigDecimal(value.toString());
+        } catch (Exception e) {
+            ret = null;
+        }
+        return ret;
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulStatement.java

@@ -136,21 +136,21 @@ public class RestfulStatement extends AbstractStatement {
             throw TSDBError.createSQLException(jsonObject.getInteger("code"), jsonObject.getString("desc"));
         }
         this.resultSet = null;
-        this.affectedRows = checkJsonResultSet(jsonObject);
+        this.affectedRows = getAffectedRows(jsonObject);
         return this.affectedRows;
     }
 
-    private int checkJsonResultSet(JSONObject jsonObject) {
+    private int getAffectedRows(JSONObject jsonObject) throws SQLException {
         // create ... SQLs should return 0 , and Restful result is this:
         // {"status": "succ", "head": ["affected_rows"], "data": [[0]], "rows": 1}
         JSONArray head = jsonObject.getJSONArray("head");
+        if (head.size() != 1 || !"affected_rows".equals(head.getString(0)))
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
         JSONArray data = jsonObject.getJSONArray("data");
-        int rows = Integer.parseInt(jsonObject.getString("rows"));
-        if (head.size() == 1 && "affected_rows".equals(head.getString(0))
-                && data.size() == 1 && data.getJSONArray(0).getInteger(0) == 0 && rows == 1) {
-            return 0;
-        }
-        return rows;
+        if (data != null)
+            return data.getJSONArray(0).getInteger(0);
+
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/NullType.java

@@ -0,0 +1,91 @@
+package com.taosdata.jdbc.utils;
+
+public class NullType {
+    private static final byte NULL_BOOL_VAL = 0x2;
+    private static final String NULL_STR = "null";
+
+    public String toString() {
+        return NullType.NULL_STR;
+    }
+
+    public static boolean isBooleanNull(byte val) {
+        return val == NullType.NULL_BOOL_VAL;
+    }
+    
+    public static boolean isTinyIntNull(byte val) {
+        return val == Byte.MIN_VALUE;
+    }
+    
+    public static boolean isSmallIntNull(short val) {
+        return val == Short.MIN_VALUE;
+    }
+
+    public static boolean isIntNull(int val) {
+        return val == Integer.MIN_VALUE;
+    }
+    
+    public static boolean isBigIntNull(long val) {
+        return val == Long.MIN_VALUE;
+    }
+    
+    public static boolean isFloatNull(float val) {
+        return Float.isNaN(val);
+    }
+    
+    public static boolean isDoubleNull(double val) {
+        return Double.isNaN(val);
+    }
+    
+    public static boolean isBinaryNull(byte[] val, int length) {
+        if (length != Byte.BYTES) {
+            return false;
+        }
+
+        return val[0] == 0xFF;
+    }
+    
+    public static boolean isNcharNull(byte[] val, int length) {
+        if (length != Integer.BYTES) {
+            return false;
+        }
+
+        return (val[0] & val[1] & val[2] & val[3]) == 0xFF;
+    }
+    
+    public static byte getBooleanNull() {
+    	return NullType.NULL_BOOL_VAL;
+    }
+    
+    public static byte getTinyintNull() {
+    	return Byte.MIN_VALUE;
+    }
+    
+    public static int getIntNull() {
+    	return Integer.MIN_VALUE;
+    }
+    
+    public static short getSmallIntNull() {
+    	return Short.MIN_VALUE;
+    }
+
+    public static long getBigIntNull() {
+    	return Long.MIN_VALUE;
+    }
+    
+    public static int getFloatNull() {
+    	return 0x7FF00000;
+    }
+
+    public static long getDoubleNull() {
+    	return 0x7FFFFF0000000000L;
+    }
+
+    public static byte getBinaryNull() {
+    	return (byte) 0xFF;
+    }
+    
+    public static byte[] getNcharNull() {
+    	return new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
+    }
+
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/UtcTimestampUtil.java

@@ -1,12 +0,0 @@
-package com.taosdata.jdbc.utils;
-
-import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeFormatterBuilder;
-
-public class UtcTimestampUtil {
-    public static final DateTimeFormatter formatter = new DateTimeFormatterBuilder()
-            .appendPattern("yyyy-MM-ddTHH:mm:ss.SSS+")
-//            .appendFraction(ChronoField.NANO_OF_SECOND, 0, 9, true)
-            .toFormatter();
-
-}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/Utils.java

@@ -0,0 +1,188 @@
+package com.taosdata.jdbc.utils;
+
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeSet;
+import com.google.common.collect.TreeRangeSet;
+
+import java.nio.charset.Charset;
+import java.sql.Date;
+import java.sql.Time;
+import java.sql.Timestamp;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
+import java.time.format.DateTimeParseException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class Utils {
+
+    private static Pattern ptn = Pattern.compile(".*?'");
+
+    private static final DateTimeFormatter formatter = new DateTimeFormatterBuilder()
+            .appendPattern("yyyy-MM-dd HH:mm:ss.SSS").toFormatter();
+    private static final DateTimeFormatter formatter2 = new DateTimeFormatterBuilder()
+            .appendPattern("yyyy-MM-dd HH:mm:ss.SSSSSS").toFormatter();
+
+    public static Time parseTime(String timestampStr) throws DateTimeParseException {
+        LocalTime time;
+        try {
+            time = LocalTime.parse(timestampStr, formatter);
+        } catch (DateTimeParseException e) {
+            time = LocalTime.parse(timestampStr, formatter2);
+        }
+        return Time.valueOf(time);
+    }
+
+    public static Date parseDate(String timestampStr) throws DateTimeParseException {
+        LocalDate date;
+        try {
+            date = LocalDate.parse(timestampStr, formatter);
+        } catch (DateTimeParseException e) {
+            date = LocalDate.parse(timestampStr, formatter2);
+        }
+        return Date.valueOf(date);
+    }
+
+    public static Timestamp parseTimestamp(String timeStampStr) {
+        LocalDateTime dateTime;
+        try {
+            dateTime = LocalDateTime.parse(timeStampStr, formatter);
+        } catch (DateTimeParseException e) {
+            dateTime = LocalDateTime.parse(timeStampStr, formatter2);
+        }
+        return Timestamp.valueOf(dateTime);
+    }
+
+    public static String escapeSingleQuota(String origin) {
+        Matcher m = ptn.matcher(origin);
+        StringBuffer sb = new StringBuffer();
+        int end = 0;
+        while (m.find()) {
+            end = m.end();
+            String seg = origin.substring(m.start(), end);
+            int len = seg.length();
+            if (len == 1) {
+                if ('\'' == seg.charAt(0)) {
+                    sb.append("\\'");
+                } else {
+                    sb.append(seg);
+                }
+            } else { // len > 1
+                sb.append(seg.substring(0, seg.length() - 2));
+                char lastcSec = seg.charAt(seg.length() - 2);
+                if (lastcSec == '\\') {
+                    sb.append("\\'");
+                } else {
+                    sb.append(lastcSec);
+                    sb.append("\\'");
+                }
+            }
+        }
+
+        if (end < origin.length()) {
+            sb.append(origin.substring(end));
+        }
+        return sb.toString();
+    }
+
+    public static String getNativeSql(String rawSql, Object[] parameters) {
+        // toLowerCase
+        String preparedSql = rawSql.trim().toLowerCase();
+
+        String[] clause = new String[0];
+        if (SqlSyntaxValidator.isInsertSql(preparedSql)) {
+            // insert or import
+            clause = new String[]{"values\\s*\\(.*?\\)", "tags\\s*\\(.*?\\)"};
+        }
+        if (SqlSyntaxValidator.isSelectSql(preparedSql)) {
+            // select
+            clause = new String[]{"where\\s*.*"};
+        }
+        Map<Integer, Integer> placeholderPositions = new HashMap<>();
+        RangeSet<Integer> clauseRangeSet = TreeRangeSet.create();
+        findPlaceholderPosition(preparedSql, placeholderPositions);
+        findClauseRangeSet(preparedSql, clause, clauseRangeSet);
+
+        return transformSql(rawSql, parameters, placeholderPositions, clauseRangeSet);
+    }
+
+    private static void findClauseRangeSet(String preparedSql, String[] regexArr, RangeSet<Integer> clauseRangeSet) {
+        clauseRangeSet.clear();
+        for (String regex : regexArr) {
+            Matcher matcher = Pattern.compile(regex).matcher(preparedSql);
+            while (matcher.find()) {
+                int start = matcher.start();
+                int end = matcher.end();
+                clauseRangeSet.add(Range.closed(start, end));
+            }
+        }
+    }
+
+    private static void findPlaceholderPosition(String preparedSql, Map<Integer, Integer> placeholderPosition) {
+        placeholderPosition.clear();
+        Matcher matcher = Pattern.compile("\\?").matcher(preparedSql);
+        int index = 0;
+        while (matcher.find()) {
+            int pos = matcher.start();
+            placeholderPosition.put(index, pos);
+            index++;
+        }
+    }
+
+    /***
+     *
+     * @param rawSql
+     * @param paramArr
+     * @param placeholderPosition
+     * @param clauseRangeSet
+     * @return
+     */
+    private static String transformSql(String rawSql, Object[] paramArr, Map<Integer, Integer> placeholderPosition, RangeSet<Integer> clauseRangeSet) {
+        String[] sqlArr = rawSql.split("\\?");
+
+        return IntStream.range(0, sqlArr.length).mapToObj(index -> {
+            if (index == paramArr.length)
+                return sqlArr[index];
+
+            Object para = paramArr[index];
+            String paraStr;
+            if (para != null) {
+                if (para instanceof byte[]) {
+                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
+                } else {
+                    paraStr = para.toString();
+                }
+                // if para is timestamp or String or byte[] need to translate ' character
+                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
+                    paraStr = Utils.escapeSingleQuota(paraStr);
+
+                    Integer pos = placeholderPosition.get(index);
+                    boolean contains = clauseRangeSet.contains(pos);
+                    if (contains) {
+                        paraStr = "'" + paraStr + "'";
+                    }
+                }
+            } else {
+                paraStr = "NULL";
+            }
+            return sqlArr[index] + paraStr;
+        }).collect(Collectors.joining());
+    }
+
+
+    public static String formatTimestamp(Timestamp timestamp) {
+        int nanos = timestamp.getNanos();
+        if (nanos % 1000000l != 0)
+            return timestamp.toLocalDateTime().format(formatter2);
+        return timestamp.toLocalDateTime().format(formatter);
+    }
+
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java

@@ -1,6 +1,7 @@
 package com.taosdata.jdbc;
 
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -12,69 +13,76 @@ import java.util.Properties;
 import java.util.concurrent.TimeUnit;
 
 public class SubscribeTest {
+
     Connection connection;
     Statement statement;
     String dbName = "test";
     String tName = "t0";
     String host = "127.0.0.1";
     String topic = "test";
-
-    @Before
-    public void createDatabase() {
-        try {
-            Class.forName("com.taosdata.jdbc.TSDBDriver");
-            Properties properties = new Properties();
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-            connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
-
-            statement = connection.createStatement();
-            statement.execute("drop database if exists " + dbName);
-            statement.execute("create database if not exists " + dbName);
-            statement.execute("create table if not exists " + dbName + "." + tName + " (ts timestamp, k int, v int)");
-            long ts = System.currentTimeMillis();
-            for (int i = 0; i < 2; i++) {
-                ts += i;
-                String sql = "insert into " + dbName + "." + tName + " values (" + ts + ", " + (100 + i) + ", " + i + ")";
-                statement.executeUpdate(sql);
-            }
-
-        } catch (ClassNotFoundException | SQLException e) {
-            return;
-        }
-    }
+    private long ts;
 
     @Test
     public void subscribe() {
         try {
             String rawSql = "select * from " + dbName + "." + tName + ";";
-            System.out.println(rawSql);
-//            TSDBSubscribe subscribe = ((TSDBConnection) connection).subscribe(topic, rawSql, false);
+            TSDBConnection conn = connection.unwrap(TSDBConnection.class);
+            TSDBSubscribe subscribe = conn.subscribe(topic, rawSql, false);
 
-//            int a = 0;
-//            while (true) {
-//                TimeUnit.MILLISECONDS.sleep(1000);
-//                TSDBResultSet resSet = subscribe.consume();
-//                while (resSet.next()) {
-//                    for (int i = 1; i <= resSet.getMetaData().getColumnCount(); i++) {
-//                        System.out.printf(i + ": " + resSet.getString(i) + "\t");
-//                    }
-//                    System.out.println("\n======" + a + "==========");
-//                }
-//                a++;
-//                if (a >= 2) {
-//                    break;
-//                }
-//                resSet.close();
-//            }
-//
-//            subscribe.close(true);
-        } catch (Exception e) {
-            e.printStackTrace();
+            for (int j = 0; j < 10; j++) {
+                TimeUnit.SECONDS.sleep(1);
+                TSDBResultSet resSet = subscribe.consume();
+
+                int rowCnt = 0;
+                while (resSet.next()) {
+                    if (rowCnt == 0) {
+                        long cur_ts = resSet.getTimestamp(1).getTime();
+                        int k = resSet.getInt(2);
+                        int v = resSet.getInt(3);
+                        Assert.assertEquals(ts, cur_ts);
+                        Assert.assertEquals(100, k);
+                        Assert.assertEquals(1, v);
+                    }
+                    if (rowCnt == 1) {
+                        long cur_ts = resSet.getTimestamp(1).getTime();
+                        int k = resSet.getInt(2);
+                        int v = resSet.getInt(3);
+                        Assert.assertEquals(ts + 1, cur_ts);
+                        Assert.assertEquals(101, k);
+                        Assert.assertEquals(2, v);
+
+                    }
+                    rowCnt++;
+                }
+                if (j == 0)
+                    Assert.assertEquals(2, rowCnt);
+                resSet.close();
+            }
+            subscribe.close(true);
+
+
+        } catch (SQLException | InterruptedException throwables) {
+            throwables.printStackTrace();
         }
     }
 
+    @Before
+    public void createDatabase() throws SQLException {
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+        connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
+
+        statement = connection.createStatement();
+        statement.execute("drop database if exists " + dbName);
+        statement.execute("create database if not exists " + dbName);
+        statement.execute("create table if not exists " + dbName + "." + tName + " (ts timestamp, k int, v int)");
+        ts = System.currentTimeMillis();
+        statement.executeUpdate("insert into " + dbName + "." + tName + " values (" + ts + ", 100, 1)");
+        statement.executeUpdate("insert into " + dbName + "." + tName + " values (" + (ts + 1) + ", 101, 2)");
+    }
+
     @After
     public void close() {
         try {
@@ -86,6 +94,5 @@ public class SubscribeTest {
         } catch (SQLException e) {
             e.printStackTrace();
         }
-
     }
 }

src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBPreparedStatementTest.java

@@ -8,6 +8,8 @@ import org.junit.Test;
 import java.io.IOException;
 import java.io.Serializable;
 import java.sql.*;
+import java.util.ArrayList;
+import java.util.Random;
 
 public class TSDBPreparedStatementTest {
     private static final String host = "127.0.0.1";
@@ -97,6 +99,118 @@ public class TSDBPreparedStatementTest {
         Assert.assertEquals(1, result);
     }
 
+    @Test
+    public void executeTest() throws SQLException {   
+        Statement stmt = conn.createStatement();            
+
+        int numOfRows = 1000;        
+
+        for (int loop = 0; loop < 10; loop++){
+            stmt.execute("drop table if exists weather_test");
+            stmt.execute("create table weather_test(ts timestamp, f1 nchar(4), f2 float, f3 double, f4 timestamp, f5 int, f6 bool, f7 binary(10))");            
+
+            TSDBPreparedStatement s = (TSDBPreparedStatement) conn.prepareStatement("insert into ? values(?, ?, ?, ?, ?, ?, ?, ?)");
+            Random r = new Random();
+            s.setTableName("weather_test");
+            
+            ArrayList<Long> ts = new ArrayList<Long>();
+            for(int i = 0; i < numOfRows; i++) {
+                ts.add(System.currentTimeMillis() + i);
+            }        
+            s.setTimestamp(0, ts);
+
+            int random = 10 + r.nextInt(5);
+            ArrayList<String> s2 = new ArrayList<String>();        
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    s2.add(null);
+                }else{
+                    s2.add("分支" + i % 4);
+                }
+            }        
+            s.setNString(1, s2, 4);      
+
+            random = 10 + r.nextInt(5);
+            ArrayList<Float> s3 = new ArrayList<Float>();        
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    s3.add(null);
+                }else{
+                    s3.add(r.nextFloat());
+                }
+            }        
+            s.setFloat(2, s3);
+
+            random = 10 + r.nextInt(5);
+            ArrayList<Double> s4 = new ArrayList<Double>();
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    s4.add(null);
+                }else{
+                    s4.add(r.nextDouble());
+                }
+            }
+            s.setDouble(3, s4);
+
+            random = 10 + r.nextInt(5);
+            ArrayList<Long> ts2 = new ArrayList<Long>();
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    ts2.add(null);
+                }else{
+                    ts2.add(System.currentTimeMillis() + i);
+                }
+            }
+            s.setTimestamp(4, ts2);
+
+            random = 10 + r.nextInt(5);
+            ArrayList<Integer>  vals = new ArrayList<>();
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    vals.add(null);
+                }else{
+                    vals.add(r.nextInt());
+                }                
+            }
+            s.setInt(5, vals);
+
+            random = 10 + r.nextInt(5);
+            ArrayList<Boolean> sb = new ArrayList<>();
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    sb.add(null);
+                }else{
+                    sb.add(i % 2 == 0 ? true : false);
+                }
+            }
+            s.setBoolean(6, sb);        
+
+            random = 10 + r.nextInt(5);
+            ArrayList<String> s5 = new ArrayList<String>();
+            for(int i = 0; i < numOfRows; i++) {
+                if(i % random == 0) {
+                    s5.add(null);
+                }else{
+                    s5.add("test" + i % 10);
+                }
+            }
+            s.setString(7, s5, 10);        
+
+            s.columnDataAddBatch();
+            s.columnDataExecuteBatch();
+            s.columnDataCloseBatch();
+
+            String sql = "select * from weather_test";
+            PreparedStatement statement = conn.prepareStatement(sql);
+            ResultSet rs = statement.executeQuery();
+            int rows = 0;
+            while(rs.next()) {
+                rows++;
+            }
+            Assert.assertEquals(numOfRows, rows);
+        }
+    }
+
     @Test
     public void setBoolean() throws SQLException {
         pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));

src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBResultSetTest.java

@@ -3,7 +3,6 @@ package com.taosdata.jdbc;
 import com.google.common.primitives.Ints;
 import com.google.common.primitives.Longs;
 import com.google.common.primitives.Shorts;
-import com.taosdata.jdbc.rs.RestfulResultSet;
 import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
@@ -177,7 +176,8 @@ public class TSDBResultSetTest {
         rs.getAsciiStream("f1");
     }
 
-    @Test(expected = SQLFeatureNotSupportedException.class)
+    @SuppressWarnings("deprecation")
+	@Test(expected = SQLFeatureNotSupportedException.class)
     public void getUnicodeStream() throws SQLException {
         rs.getUnicodeStream("f1");
     }
@@ -326,7 +326,7 @@ public class TSDBResultSetTest {
 
     @Test(expected = SQLFeatureNotSupportedException.class)
     public void getRow() throws SQLException {
-        int row = rs.getRow();
+        rs.getRow();
     }
 
     @Test(expected = SQLFeatureNotSupportedException.class)
@@ -405,12 +405,12 @@ public class TSDBResultSetTest {
 
     @Test(expected = SQLFeatureNotSupportedException.class)
     public void updateByte() throws SQLException {
-        rs.updateByte(1, new Byte("0"));
+        rs.updateByte(1, (byte) 0);
     }
 
     @Test(expected = SQLFeatureNotSupportedException.class)
     public void updateShort() throws SQLException {
-        rs.updateShort(1, new Short("0"));
+        rs.updateShort(1, (short) 0);
     }
 
     @Test(expected = SQLFeatureNotSupportedException.class)

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/InsertSpecialCharacterJniTest.java

@@ -0,0 +1,401 @@
+package com.taosdata.jdbc.cases;
+
+import org.junit.*;
+
+import java.sql.*;
+
+public class InsertSpecialCharacterJniTest {
+
+    private static final String host = "127.0.0.1";
+    private static Connection conn;
+    private static String dbName = "spec_char_test";
+    private static String tbname1 = "test";
+    private static String tbname2 = "weather";
+    private static String special_character_str_1 = "$asd$$fsfsf$";
+    private static String special_character_str_2 = "\\\\asdfsfsf\\\\";
+    private static String special_character_str_3 = "\\\\asdfsfsf\\";
+    private static String special_character_str_4 = "?asd??fsf?sf?";
+    private static String special_character_str_5 = "?#sd@$f(('<(s[P)>\"){]}f?s[]{}%vaew|\"fsfs^a&d*jhg)(j))(f@~!?$";
+
+    @Test
+    public void testCase01() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_1.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from ?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, tbname1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_1, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+
+    @Test
+    public void testCase02() throws SQLException {
+        //TODO:
+        // Expected :\asdfsfsf\\
+        // Actual   :\asdfsfsf\
+
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_2.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            //TODO: bug to be fixed
+//            Assert.assertEquals(special_character_str_2, f1);
+            Assert.assertEquals(special_character_str_2.substring(1, special_character_str_1.length() - 1), f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase03() throws SQLException {
+        //TODO:
+        // TDengine ERROR (216): Syntax error in SQL
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_3.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_3, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase04() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase05() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase06() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_4);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query t1
+        final String query = "select * from t1";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase07() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, ?, ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            pstmt.setString(3, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase08() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?) ? ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_5);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Test
+    public void testCase09() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into ?.t? using " + tbname2 + " tags(?) values(?, ?, ?) t? using weather tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        // query t1
+        String query = "select * from t?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t2";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test
+    public void testCase10() throws SQLException {
+        final long now = System.currentTimeMillis();
+
+        // insert
+        final String sql = "insert into t? using ? tags(?) values(?, ?, ?) t? using " + tbname2 + " tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, tbname2);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        //query t1
+        String query = "select * from ?.t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setTimestamp(3, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(4, new Timestamp(0));
+            pstmt.setString(5, "f1");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            byte[] f2 = rs.getBytes(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 2);
+            pstmt.setTimestamp(2, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(3, new Timestamp(0));
+            pstmt.setString(4, "f2");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase11() throws SQLException {
+        final String speicalCharacterStr = "?#sd@$f(((s[P)){]}f?s[]{}%vs^a&d*jhg)(j))(f@~!?$";
+        final long now = System.currentTimeMillis();
+
+        final String sql = "insert into t? using " + tbname2 + " values(?, ?, 'abc?abc') ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setTimestamp(2, new Timestamp(now));
+            pstmt.setBytes(3, speicalCharacterStr.getBytes());
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+
+    @Test
+    public void testCase12() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, 'HelloTDengine', ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setString(2, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals("HelloTDengine", f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Before
+    public void before() throws SQLException {
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop table if exists " + tbname1 + "");
+            stmt.execute("create table " + tbname1 + "(ts timestamp,f1 binary(64),f2 nchar(64))");
+            stmt.execute("drop table if exists " + tbname2);
+            stmt.execute("create table " + tbname2 + "(ts timestamp, f1 binary(64), f2 nchar(64)) tags(loc nchar(64))");
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists " + dbName);
+            stmt.execute("create database if not exists " + dbName);
+            stmt.execute("use " + dbName);
+        }
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (conn != null)
+            conn.close();
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/InsertSpecialCharacterRestfulTest.java

@@ -0,0 +1,400 @@
+package com.taosdata.jdbc.cases;
+
+import org.junit.*;
+
+import java.sql.*;
+
+public class InsertSpecialCharacterRestfulTest {
+
+    private static final String host = "127.0.0.1";
+    private static Connection conn;
+    private static String dbName = "spec_char_test";
+    private static String tbname1 = "test";
+    private static String tbname2 = "weather";
+    private static String special_character_str_1 = "$asd$$fsfsf$";
+    private static String special_character_str_2 = "\\\\asdfsfsf\\\\";
+    private static String special_character_str_3 = "\\\\asdfsfsf\\";
+    private static String special_character_str_4 = "?asd??fsf?sf?";
+    private static String special_character_str_5 = "?#sd@$f(('<(s[P)>\"){]}f?s[]{}%vaew|\"fsfs^a&d*jhg)(j))(f@~!?$";
+
+    @Test
+    public void testCase01() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_1.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from ?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, tbname1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_1, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+
+    @Test
+    public void testCase02() throws SQLException {
+        //TODO:
+        // Expected :\asdfsfsf\
+        // Actual   :\asdfsfsf\
+
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_2.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            //TODO: bug to be fixed
+//            Assert.assertEquals(special_character_str_2, f1);
+            Assert.assertEquals(special_character_str_2.substring(1, special_character_str_1.length() - 1), f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase03() throws SQLException {
+        //TODO:
+        // TDengine ERROR (216): Syntax error in SQL
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_3.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_3, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase04() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase05() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase06() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_4);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query t1
+        final String query = "select * from t1";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase07() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, ?, ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            pstmt.setString(3, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase08() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?) ? ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_5);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Test
+    public void testCase09() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into ?.t? using " + tbname2 + " tags(?) values(?, ?, ?) t? using weather tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        // query t1
+        String query = "select * from t?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t2";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test
+    public void testCase10() throws SQLException {
+        final long now = System.currentTimeMillis();
+
+        // insert
+        final String sql = "insert into t? using ? tags(?) values(?, ?, ?) t? using " + tbname2 + " tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, tbname2);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        //query t1
+        String query = "select * from ?.t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setTimestamp(3, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(4, new Timestamp(0));
+            pstmt.setString(5, "f1");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            byte[] f2 = rs.getBytes(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 2);
+            pstmt.setTimestamp(2, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(3, new Timestamp(0));
+            pstmt.setString(4, "f2");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase11() throws SQLException {
+        final String speicalCharacterStr = "?#sd@$f(((s[P)){]}f?s[]{}%vs^a&d*jhg)(j))(f@~!?$";
+        final long now = System.currentTimeMillis();
+
+        final String sql = "insert into t? using " + tbname2 + " values(?, ?, 'abc?abc') ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setTimestamp(2, new Timestamp(now));
+            pstmt.setBytes(3, speicalCharacterStr.getBytes());
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Test
+    public void testCase12() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, 'HelloTDengine', ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setString(2, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals("HelloTDengine", f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Before
+    public void before() throws SQLException {
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop table if exists " + tbname1 + "");
+            stmt.execute("create table " + tbname1 + "(ts timestamp,f1 binary(64),f2 nchar(64))");
+            stmt.execute("drop table if exists " + tbname2);
+            stmt.execute("create table " + tbname2 + "(ts timestamp, f1 binary(64), f2 nchar(64)) tags(loc nchar(64))");
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists " + dbName);
+            stmt.execute("create database if not exists " + dbName);
+            stmt.execute("use " + dbName);
+        }
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (conn != null)
+            conn.close();
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TD4144Test.java

@@ -0,0 +1,105 @@
+package com.taosdata.jdbc.cases;
+
+import com.taosdata.jdbc.TSDBConnection;
+import com.taosdata.jdbc.TSDBDriver;
+import com.taosdata.jdbc.TSDBResultSet;
+import com.taosdata.jdbc.TSDBSubscribe;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.sql.DriverManager;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Properties;
+import java.util.concurrent.TimeUnit;
+
+public class TD4144Test {
+
+    private static TSDBConnection connection;
+    private static final String host = "127.0.0.1";
+
+    private static final String topic = "topic-meter-current-bg-10";
+    private static final String sql = "select * from meters where current > 10";
+    private static final String sql2 = "select * from meters where ts >= '2020-08-15 12:20:00.000'";
+
+
+    @Test
+    public void test() throws SQLException {
+        TSDBSubscribe subscribe = null;
+        TSDBResultSet res = null;
+        boolean hasNext = false;
+
+        try {
+            subscribe = connection.subscribe(topic, sql, false);
+            int count = 0;
+            while (true) {
+                // 等待1秒，避免频繁调用 consume，给服务端造成压力
+                TimeUnit.SECONDS.sleep(1);
+                if (res == null) {
+                    // 消费数据
+                    res = subscribe.consume();
+                    hasNext = res.next();
+                }
+
+                if (res == null) {
+                    continue;
+                }
+                ResultSetMetaData metaData = res.getMetaData();
+                int number = 0;
+                while (hasNext) {
+                    int columnCount = metaData.getColumnCount();
+                    for (int i = 1; i <= columnCount; i++) {
+                        System.out.print(metaData.getColumnLabel(i) + ": " + res.getString(i) + "\t");
+                    }
+                    System.out.println();
+                    count++;
+                    number++;
+                    hasNext = res.next();
+                    if (!hasNext) {
+                        res.close();
+                        res = null;
+                        System.out.println("rows： " + count);
+                    }
+                    if (hasNext == true && number >= 10) {
+                        System.out.println("batch" + number);
+                        break;
+                    }
+                }
+
+            }
+
+        } catch (SQLException | InterruptedException throwables) {
+            throwables.printStackTrace();
+        } finally {
+            if (subscribe != null)
+                subscribe.close(true);
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+        String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        connection = (DriverManager.getConnection(url, properties)).unwrap(TSDBConnection.class);
+        try (Statement stmt = connection.createStatement()) {
+            stmt.execute("drop database if exists power");
+            stmt.execute("create database if not exists power");
+            stmt.execute("use power");
+            stmt.execute("create table meters(ts timestamp, current float, voltage int, phase int) tags(location binary(64), groupId int)");
+            stmt.execute("create table d1001 using meters tags(\"Beijing.Chaoyang\", 2)");
+            stmt.execute("create table d1002 using meters tags(\"Beijing.Haidian\", 2)");
+            stmt.execute("insert into d1001 values(\"2020-08-15 12:00:00.000\", 12, 220, 1),(\"2020-08-15 12:10:00.000\", 12.3, 220, 2),(\"2020-08-15 12:20:00.000\", 12.2, 220, 1)");
+            stmt.execute("insert into d1002 values(\"2020-08-15 12:00:00.000\", 9.9, 220, 1),(\"2020-08-15 12:10:00.000\", 10.3, 220, 1),(\"2020-08-15 12:20:00.000\", 11.2, 220, 1)");
+        }
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (connection != null)
+            connection.close();
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TD4174Test.java

@@ -0,0 +1,62 @@
+package com.taosdata.jdbc.cases;
+
+import com.alibaba.fastjson.JSONObject;
+import com.taosdata.jdbc.TSDBDriver;
+import org.junit.*;
+
+import java.sql.*;
+import java.util.Properties;
+
+public class TD4174Test {
+    private Connection conn;
+    private static final String host = "127.0.0.1";
+
+    @Test
+    public void test() {
+        long ts = System.currentTimeMillis();
+        try (PreparedStatement pstmt = conn.prepareStatement("insert into weather values(" + ts + ", ?)")) {
+            JSONObject value = new JSONObject();
+            value.put("name", "John Smith");
+            value.put("age", 20);
+            Assert.assertEquals("{\"name\":\"John Smith\",\"age\":20}",value.toJSONString());
+            pstmt.setString(1, value.toJSONString());
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String[] args) {
+        JSONObject value = new JSONObject();
+        value.put("name", "John Smith");
+        value.put("age", 20);
+        System.out.println(value.toJSONString());
+    }
+
+    @Before
+    public void before() throws SQLException {
+        String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+
+        conn = DriverManager.getConnection(url, properties);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists td4174");
+            stmt.execute("create database if not exists td4174");
+            stmt.execute("use td4174");
+            stmt.execute("create table weather(ts timestamp, text binary(64))");
+        }
+    }
+
+    @After
+    public void after() throws SQLException {
+        if (conn != null)
+            conn.close();
+
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TwoTypeTimestampPercisionInRestfulTest.java

@@ -13,6 +13,7 @@ import java.util.Properties;
 public class TwoTypeTimestampPercisionInRestfulTest {
 
     private static final String host = "127.0.0.1";
+
     private static final String ms_timestamp_db = "ms_precision_test";
     private static final String us_timestamp_db = "us_precision_test";
     private static final long timestamp1 = System.currentTimeMillis();
@@ -94,7 +95,8 @@ public class TwoTypeTimestampPercisionInRestfulTest {
         try (Statement stmt = conn3.createStatement()) {
             ResultSet rs = stmt.executeQuery("select last_row(ts) from " + ms_timestamp_db + ".weather");
             rs.next();
-            long ts = rs.getTimestamp(1).getTime();
+            Timestamp actual = rs.getTimestamp(1);
+            long ts = actual == null ? 0 : actual.getTime();
             Assert.assertEquals(timestamp1, ts);
             ts = rs.getLong(1);
             Assert.assertEquals(timestamp1, ts);
@@ -110,7 +112,7 @@ public class TwoTypeTimestampPercisionInRestfulTest {
             rs.next();
 
             Timestamp timestamp = rs.getTimestamp(1);
-            long ts = timestamp.getTime();
+            long ts = timestamp == null ? 0 : timestamp.getTime();
             Assert.assertEquals(timestamp1, ts);
             int nanos = timestamp.getNanos();
             Assert.assertEquals(timestamp2 % 1000_000l * 1000, nanos);

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/UnsignedNumberJniTest.java

@@ -9,19 +9,19 @@ import java.util.Properties;
 
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 public class UnsignedNumberJniTest {
+
     private static final String host = "127.0.0.1";
     private static Connection conn;
+    private static long ts;
 
     @Test
     public void testCase001() {
         try (Statement stmt = conn.createStatement()) {
             ResultSet rs = stmt.executeQuery("select * from us_table");
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
             while (rs.next()) {
-                for (int i = 1; i <= meta.getColumnCount(); i++) {
-                    System.out.print(meta.getColumnLabel(i) + ": " + rs.getString(i) + "\t");
-                }
-                System.out.println();
+                Assert.assertEquals(ts, rs.getTimestamp(1).getTime());
                 Assert.assertEquals("127", rs.getString(2));
                 Assert.assertEquals("32767", rs.getString(3));
                 Assert.assertEquals("2147483647", rs.getString(4));
@@ -37,13 +37,10 @@ public class UnsignedNumberJniTest {
         try (Statement stmt = conn.createStatement()) {
             ResultSet rs = stmt.executeQuery("select * from us_table");
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
+
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(ts, rs.getTimestamp(1).getTime());
                 Assert.assertEquals(127, rs.getByte(2));
                 Assert.assertEquals(32767, rs.getShort(3));
                 Assert.assertEquals(2147483647, rs.getInt(4));
@@ -61,16 +58,14 @@ public class UnsignedNumberJniTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 32767,2147483647, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
                 Assert.assertEquals(127, rs.getByte(2));
                 Assert.assertEquals(32767, rs.getShort(3));
                 Assert.assertEquals(2147483647, rs.getInt(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getLong(5);
             }
         }
     }
@@ -82,15 +77,15 @@ public class UnsignedNumberJniTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 32767,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
+
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
                 Assert.assertEquals(127, rs.getByte(2));
                 Assert.assertEquals(32767, rs.getShort(3));
+                Assert.assertEquals("4294967294", rs.getString(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getInt(4);
             }
         }
     }
@@ -102,15 +97,15 @@ public class UnsignedNumberJniTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 65534,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
-            while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+            assertResultSetMetaData(meta);
 
+            while (rs.next()) {
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
                 Assert.assertEquals(127, rs.getByte(2));
+                Assert.assertEquals("65534", rs.getString(3));
+                Assert.assertEquals("4294967294", rs.getString(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getShort(3);
             }
         }
     }
@@ -122,37 +117,27 @@ public class UnsignedNumberJniTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 254, 65534,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
-            while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
-            }
-        }
-    }
+            assertResultSetMetaData(meta);
 
-    @Test
-    public void testCase007() throws SQLException {
-        try (Statement stmt = conn.createStatement()) {
-            long now = System.currentTimeMillis();
-            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 254, 65534,4294967294, 18446744073709551614)");
-            ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
-            ResultSetMetaData meta = rs.getMetaData();
             while (rs.next()) {
-                for (int i = 1; i <= meta.getColumnCount(); i++) {
-                    System.out.print(meta.getColumnLabel(i) + ": " + rs.getString(i) + "\t");
-                }
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
                 Assert.assertEquals("254", rs.getString(2));
                 Assert.assertEquals("65534", rs.getString(3));
                 Assert.assertEquals("4294967294", rs.getString(4));
                 Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getByte(2);
             }
         }
     }
 
+    private void assertResultSetMetaData(ResultSetMetaData meta) throws SQLException {
+        Assert.assertEquals(5, meta.getColumnCount());
+        Assert.assertEquals("ts", meta.getColumnLabel(1));
+        Assert.assertEquals("f1", meta.getColumnLabel(2));
+        Assert.assertEquals("f2", meta.getColumnLabel(3));
+        Assert.assertEquals("f3", meta.getColumnLabel(4));
+        Assert.assertEquals("f4", meta.getColumnLabel(5));
+    }
 
     @BeforeClass
     public static void beforeClass() {
@@ -160,20 +145,19 @@ public class UnsignedNumberJniTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+        ts = System.currentTimeMillis();
 
         try {
-            Class.forName("com.taosdata.jdbc.TSDBDriver");
             final String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
             conn = DriverManager.getConnection(url, properties);
-
             Statement stmt = conn.createStatement();
             stmt.execute("drop database if exists unsign_jni");
             stmt.execute("create database if not exists unsign_jni");
             stmt.execute("use unsign_jni");
             stmt.execute("create table us_table(ts timestamp, f1 tinyint unsigned, f2 smallint unsigned, f3 int unsigned, f4 bigint unsigned)");
-            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(now, 127, 32767,2147483647, 9223372036854775807)");
+            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + ts + ", 127, 32767,2147483647, 9223372036854775807)");
             stmt.close();
-        } catch (ClassNotFoundException | SQLException e) {
+        } catch (SQLException e) {
             e.printStackTrace();
         }
     }

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/UnsignedNumberRestfulTest.java

@@ -13,17 +13,20 @@ public class UnsignedNumberRestfulTest {
 
     private static final String host = "127.0.0.1";
     private static Connection conn;
+    private static long ts;
 
     @Test
     public void testCase001() {
         try (Statement stmt = conn.createStatement()) {
             ResultSet rs = stmt.executeQuery("select * from us_table");
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
             while (rs.next()) {
-                for (int i = 1; i <= meta.getColumnCount(); i++) {
-                    System.out.print(meta.getColumnLabel(i) + ": " + rs.getString(i) + "\t");
-                }
-                System.out.println();
+                Assert.assertEquals(ts, rs.getTimestamp(1).getTime());
+                Assert.assertEquals("127", rs.getString(2));
+                Assert.assertEquals("32767", rs.getString(3));
+                Assert.assertEquals("2147483647", rs.getString(4));
+                Assert.assertEquals("9223372036854775807", rs.getString(5));
             }
         } catch (SQLException e) {
             e.printStackTrace();
@@ -35,13 +38,14 @@ public class UnsignedNumberRestfulTest {
         try (Statement stmt = conn.createStatement()) {
             ResultSet rs = stmt.executeQuery("select * from us_table");
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
+
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(ts, rs.getTimestamp(1).getTime());
+                Assert.assertEquals(127, rs.getByte(2));
+                Assert.assertEquals(32767, rs.getShort(3));
+                Assert.assertEquals(2147483647, rs.getInt(4));
+                Assert.assertEquals(9223372036854775807l, rs.getLong(5));
             }
         } catch (SQLException e) {
             e.printStackTrace();
@@ -55,13 +59,14 @@ public class UnsignedNumberRestfulTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 32767,2147483647, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
+                Assert.assertEquals(127, rs.getByte(2));
+                Assert.assertEquals(32767, rs.getShort(3));
+                Assert.assertEquals(2147483647, rs.getInt(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getLong(5);
             }
         }
     }
@@ -73,13 +78,15 @@ public class UnsignedNumberRestfulTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 32767,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
+
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
+                Assert.assertEquals(127, rs.getByte(2));
+                Assert.assertEquals(32767, rs.getShort(3));
+                Assert.assertEquals("4294967294", rs.getString(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getInt(4);
             }
         }
     }
@@ -91,13 +98,15 @@ public class UnsignedNumberRestfulTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 127, 65534,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
+            assertResultSetMetaData(meta);
+
             while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
+                Assert.assertEquals(127, rs.getByte(2));
+                Assert.assertEquals("65534", rs.getString(3));
+                Assert.assertEquals("4294967294", rs.getString(4));
+                Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getShort(3);
             }
         }
     }
@@ -109,57 +118,47 @@ public class UnsignedNumberRestfulTest {
             stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 254, 65534,4294967294, 18446744073709551614)");
             ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
             ResultSetMetaData meta = rs.getMetaData();
-            while (rs.next()) {
-                System.out.print(meta.getColumnLabel(1) + ": " + rs.getTimestamp(1) + "\t");
-                System.out.print(meta.getColumnLabel(2) + ": " + rs.getByte(2) + "\t");
-                System.out.print(meta.getColumnLabel(3) + ": " + rs.getShort(3) + "\t");
-                System.out.print(meta.getColumnLabel(4) + ": " + rs.getInt(4) + "\t");
-                System.out.print(meta.getColumnLabel(5) + ": " + rs.getLong(5) + "\t");
-                System.out.println();
-            }
-        }
-    }
+            assertResultSetMetaData(meta);
 
-    @Test
-    public void testCase007() throws SQLException {
-        try (Statement stmt = conn.createStatement()) {
-            long now = System.currentTimeMillis();
-            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + now + ", 254, 65534,4294967294, 18446744073709551614)");
-            ResultSet rs = stmt.executeQuery("select * from us_table where ts = " + now);
-            ResultSetMetaData meta = rs.getMetaData();
             while (rs.next()) {
-                for (int i = 1; i <= meta.getColumnCount(); i++) {
-                    System.out.print(meta.getColumnLabel(i) + ": " + rs.getString(i) + "\t");
-                }
-                System.out.println();
+                Assert.assertEquals(now, rs.getTimestamp(1).getTime());
                 Assert.assertEquals("254", rs.getString(2));
                 Assert.assertEquals("65534", rs.getString(3));
                 Assert.assertEquals("4294967294", rs.getString(4));
                 Assert.assertEquals("18446744073709551614", rs.getString(5));
+                rs.getByte(2);
             }
         }
     }
 
+    private void assertResultSetMetaData(ResultSetMetaData meta) throws SQLException {
+        Assert.assertEquals(5, meta.getColumnCount());
+        Assert.assertEquals("ts", meta.getColumnLabel(1));
+        Assert.assertEquals("f1", meta.getColumnLabel(2));
+        Assert.assertEquals("f2", meta.getColumnLabel(3));
+        Assert.assertEquals("f3", meta.getColumnLabel(4));
+        Assert.assertEquals("f4", meta.getColumnLabel(5));
+    }
+
     @BeforeClass
     public static void beforeClass() {
         Properties properties = new Properties();
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+        ts = System.currentTimeMillis();
 
         try {
-            Class.forName("com.taosdata.jdbc.rs.RestfulDriver");
             final String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
             conn = DriverManager.getConnection(url, properties);
-
             Statement stmt = conn.createStatement();
             stmt.execute("drop database if exists unsign_restful");
             stmt.execute("create database if not exists unsign_restful");
             stmt.execute("use unsign_restful");
             stmt.execute("create table us_table(ts timestamp, f1 tinyint unsigned, f2 smallint unsigned, f3 int unsigned, f4 bigint unsigned)");
-            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(now, 127, 32767,2147483647, 9223372036854775807)");
+            stmt.executeUpdate("insert into us_table(ts,f1,f2,f3,f4) values(" + ts + ", 127, 32767,2147483647, 9223372036854775807)");
             stmt.close();
-        } catch (ClassNotFoundException | SQLException e) {
+        } catch (SQLException e) {
             e.printStackTrace();
         }
     }

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulPreparedStatementTest.java

@@ -6,7 +6,6 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 
 import java.io.IOException;
-import java.io.Serializable;
 import java.sql.*;
 
 public class RestfulPreparedStatementTest {
@@ -371,7 +370,6 @@ public class RestfulPreparedStatementTest {
         pstmt_insert.setSQLXML(1, null);
     }
 
-
     @BeforeClass
     public static void beforeClass() {
         try {

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java

@@ -18,7 +18,6 @@ import java.text.SimpleDateFormat;
 public class RestfulResultSetTest {
 
     private static final String host = "127.0.0.1";
-
     private static Connection conn;
     private static Statement stmt;
     private static ResultSet rs;
@@ -95,7 +94,8 @@ public class RestfulResultSetTest {
     @Test
     public void getBigDecimal() throws SQLException {
         BigDecimal f1 = rs.getBigDecimal("f1");
-        Assert.assertEquals(1609430400000l, f1.longValue());
+        long actual = (f1 == null) ? 0 : f1.longValue();
+        Assert.assertEquals(1609430400000l, actual);
 
         BigDecimal f2 = rs.getBigDecimal("f2");
         Assert.assertEquals(1, f2.intValue());
@@ -119,7 +119,7 @@ public class RestfulResultSetTest {
     @Test
     public void getBytes() throws SQLException {
         byte[] f1 = rs.getBytes("f1");
-        Assert.assertEquals("2021-01-01 00:00:00.0", new String(f1));
+        Assert.assertEquals("2021-01-01 00:00:00.000", new String(f1));
 
         byte[] f2 = rs.getBytes("f2");
         Assert.assertEquals(1, Ints.fromByteArray(f2));

src/connector/jdbc/src/test/java/com/taosdata/jdbc/utils/UtilsTest.java

@@ -0,0 +1,24 @@
+package com.taosdata.jdbc.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class UtilsTest {
+
+    @Test
+    public void escapeSingleQuota() {
+        String s = "'''''a\\'";
+        String news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+
+        s = "\'''''a\\'";
+        news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+
+        s = "\'\'\'\''a\\'";
+        news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+    }
+}

src/connector/nodejs/nodetaos/cinterface.js

@@ -9,7 +9,7 @@ const ffi = require('ffi-napi');
 const ArrayType = require('ref-array-napi');
 const Struct = require('ref-struct-napi');
 const FieldTypes = require('./constants');
-const errors = require ('./error');
+const errors = require('./error');
 const TaosObjects = require('./taosobjects');
 const { NULL_POINTER } = require('ref-napi');
 
@@ -22,7 +22,7 @@ function convertMicrosecondsToDatetime(time) {
   return new TaosObjects.TaosTimestamp(time * 0.001, true);
 }
 
-function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   timestampConverter = convertMillisecondsToDatetime;
   if (micro == true) {
     timestampConverter = convertMicrosecondsToDatetime;
@@ -44,14 +44,14 @@ function convertTimestamp(data, num_of_rows, nbytes = 0, offset = 0, micro=false
   }
   return res;
 }
-function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = new Array(data.length);
   for (let i = 0; i < data.length; i++) {
     if (data[i] == 0) {
       res[i] = false;
     }
-    else if (data[i] == 1){
+    else if (data[i] == 1) {
       res[i] = true;
     }
     else if (data[i] == FieldTypes.C_BOOL_NULL) {
@@ -60,29 +60,29 @@ function convertBool(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertTinyint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertTinyint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
   while (currOffset < data.length) {
-    let d = data.readIntLE(currOffset,1);
+    let d = data.readIntLE(currOffset, 1);
     res.push(d == FieldTypes.C_TINYINT_NULL ? null : d);
     currOffset += nbytes;
   }
   return res;
 }
-function convertSmallint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertSmallint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
   while (currOffset < data.length) {
-    let d = data.readIntLE(currOffset,2);
+    let d = data.readIntLE(currOffset, 2);
     res.push(d == FieldTypes.C_SMALLINT_NULL ? null : d);
     currOffset += nbytes;
   }
   return res;
 }
-function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
@@ -93,7 +93,7 @@ function convertInt(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
@@ -104,7 +104,7 @@ function convertBigint(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
@@ -115,7 +115,7 @@ function convertFloat(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
@@ -126,7 +126,7 @@ function convertDouble(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let currOffset = 0;
@@ -142,7 +142,7 @@ function convertBinary(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
   }
   return res;
 }
-function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
+function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro = false) {
   data = ref.reinterpret(data.deref(), nbytes * num_of_rows, offset);
   let res = [];
   let dataEntry = data.slice(0, nbytes); //one entry in a row under a column;
@@ -153,23 +153,23 @@ function convertNchar(data, num_of_rows, nbytes = 0, offset = 0, micro=false) {
 
 // Object with all the relevant converters from pblock data to javascript readable data
 let convertFunctions = {
-    [FieldTypes.C_BOOL] : convertBool,
-    [FieldTypes.C_TINYINT] : convertTinyint,
-    [FieldTypes.C_SMALLINT] : convertSmallint,
-    [FieldTypes.C_INT] : convertInt,
-    [FieldTypes.C_BIGINT] : convertBigint,
-    [FieldTypes.C_FLOAT] : convertFloat,
-    [FieldTypes.C_DOUBLE] : convertDouble,
-    [FieldTypes.C_BINARY] : convertBinary,
-    [FieldTypes.C_TIMESTAMP] : convertTimestamp,
-    [FieldTypes.C_NCHAR] : convertNchar
+  [FieldTypes.C_BOOL]: convertBool,
+  [FieldTypes.C_TINYINT]: convertTinyint,
+  [FieldTypes.C_SMALLINT]: convertSmallint,
+  [FieldTypes.C_INT]: convertInt,
+  [FieldTypes.C_BIGINT]: convertBigint,
+  [FieldTypes.C_FLOAT]: convertFloat,
+  [FieldTypes.C_DOUBLE]: convertDouble,
+  [FieldTypes.C_BINARY]: convertBinary,
+  [FieldTypes.C_TIMESTAMP]: convertTimestamp,
+  [FieldTypes.C_NCHAR]: convertNchar
 }
 
 // Define TaosField structure
 var char_arr = ArrayType(ref.types.char);
 var TaosField = Struct({
-                      'name': char_arr,
-                      });
+  'name': char_arr,
+});
 TaosField.fields.name.type.size = 65;
 TaosField.defineProperty('type', ref.types.char);
 TaosField.defineProperty('bytes', ref.types.short);
@@ -183,7 +183,7 @@ TaosField.defineProperty('bytes', ref.types.short);
  * @classdesc The CTaosInterface is the interface through which Node.JS communicates data back and forth with TDengine. It is not advised to
  * access this class directly and use it unless you understand what these functions do.
  */
-function CTaosInterface (config = null, pass = false) {
+function CTaosInterface(config = null, pass = false) {
   ref.types.char_ptr = ref.refType(ref.types.char);
   ref.types.void_ptr = ref.refType(ref.types.void);
   ref.types.void_ptr2 = ref.refType(ref.types.void_ptr);
@@ -196,64 +196,65 @@ function CTaosInterface (config = null, pass = false) {
     taoslibname = 'libtaos';
   }
   this.libtaos = ffi.Library(taoslibname, {
-    'taos_options': [ ref.types.int, [ ref.types.int , ref.types.void_ptr ] ],
-    'taos_init': [ ref.types.void, [ ] ],
+    'taos_options': [ref.types.int, [ref.types.int, ref.types.void_ptr]],
+    'taos_init': [ref.types.void, []],
     //TAOS *taos_connect(char *ip, char *user, char *pass, char *db, int port)
-    'taos_connect': [ ref.types.void_ptr, [ ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.int ] ],
+    'taos_connect': [ref.types.void_ptr, [ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.char_ptr, ref.types.int]],
     //void taos_close(TAOS *taos)
-    'taos_close': [ ref.types.void, [ ref.types.void_ptr ] ],
-    //int *taos_fetch_lengths(TAOS_RES *taos);
-    'taos_fetch_lengths': [ ref.types.void_ptr, [ ref.types.void_ptr ] ],
+    'taos_close': [ref.types.void, [ref.types.void_ptr]],
+    //int *taos_fetch_lengths(TAOS_RES *res);
+    'taos_fetch_lengths': [ref.types.void_ptr, [ref.types.void_ptr]],
     //int taos_query(TAOS *taos, char *sqlstr)
-    'taos_query': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.char_ptr ] ],
-    //int taos_affected_rows(TAOS *taos)
-    'taos_affected_rows': [ ref.types.int, [ ref.types.void_ptr] ],
+    'taos_query': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.char_ptr]],
+    //int taos_affected_rows(TAOS_RES *res)
+    'taos_affected_rows': [ref.types.int, [ref.types.void_ptr]],
     //int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows)
-    'taos_fetch_block': [ ref.types.int, [ ref.types.void_ptr, ref.types.void_ptr] ],
+    'taos_fetch_block': [ref.types.int, [ref.types.void_ptr, ref.types.void_ptr]],
     //int taos_num_fields(TAOS_RES *res);
-    'taos_num_fields': [ ref.types.int, [ ref.types.void_ptr] ],
+    'taos_num_fields': [ref.types.int, [ref.types.void_ptr]],
     //TAOS_ROW taos_fetch_row(TAOS_RES *res)
     //TAOS_ROW is void **, but we set the return type as a reference instead to get the row
-    'taos_fetch_row': [ ref.refType(ref.types.void_ptr2), [ ref.types.void_ptr ] ],
+    'taos_fetch_row': [ref.refType(ref.types.void_ptr2), [ref.types.void_ptr]],
+    'taos_print_row': [ref.types.int, [ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int]],
     //int taos_result_precision(TAOS_RES *res)
-    'taos_result_precision': [ ref.types.int, [ ref.types.void_ptr ] ],
+    'taos_result_precision': [ref.types.int, [ref.types.void_ptr]],
     //void taos_free_result(TAOS_RES *res)
-    'taos_free_result': [ ref.types.void, [ ref.types.void_ptr] ],
+    'taos_free_result': [ref.types.void, [ref.types.void_ptr]],
     //int taos_field_count(TAOS *taos)
-    'taos_field_count': [ ref.types.int, [ ref.types.void_ptr ] ],
+    'taos_field_count': [ref.types.int, [ref.types.void_ptr]],
     //TAOS_FIELD *taos_fetch_fields(TAOS_RES *res)
-    'taos_fetch_fields': [ ref.refType(TaosField),  [ ref.types.void_ptr ] ],
+    'taos_fetch_fields': [ref.refType(TaosField), [ref.types.void_ptr]],
     //int taos_errno(TAOS *taos)
-    'taos_errno': [ ref.types.int, [ ref.types.void_ptr] ],
+    'taos_errno': [ref.types.int, [ref.types.void_ptr]],
     //char *taos_errstr(TAOS *taos)
-    'taos_errstr': [ ref.types.char_ptr, [ ref.types.void_ptr] ],
+    'taos_errstr': [ref.types.char_ptr, [ref.types.void_ptr]],
     //void taos_stop_query(TAOS_RES *res);
-    'taos_stop_query': [ ref.types.void, [ ref.types.void_ptr] ],
+    'taos_stop_query': [ref.types.void, [ref.types.void_ptr]],
     //char *taos_get_server_info(TAOS *taos);
-    'taos_get_server_info': [ ref.types.char_ptr, [ ref.types.void_ptr ] ],
+    'taos_get_server_info': [ref.types.char_ptr, [ref.types.void_ptr]],
     //char *taos_get_client_info();
-    'taos_get_client_info': [ ref.types.char_ptr, [ ] ],
+    'taos_get_client_info': [ref.types.char_ptr, []],
 
     // ASYNC
     // void taos_query_a(TAOS *taos, char *sqlstr, void (*fp)(void *, TAOS_RES *, int), void *param)
-    'taos_query_a': [ ref.types.void, [ ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr ] ],
+    'taos_query_a': [ref.types.void, [ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr]],
     // void taos_fetch_rows_a(TAOS_RES *res, void (*fp)(void *param, TAOS_RES *, int numOfRows), void *param);
-    'taos_fetch_rows_a': [ ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.void_ptr ]],
+    'taos_fetch_rows_a': [ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.void_ptr]],
 
     // Subscription
     //TAOS_SUB *taos_subscribe(TAOS* taos, int restart, const char* topic, const char *sql, TAOS_SUBSCRIBE_CALLBACK fp, void *param, int interval)
-    'taos_subscribe': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.int, ref.types.char_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int] ],
+    'taos_subscribe': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.int, ref.types.char_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.void_ptr, ref.types.int]],
     // TAOS_RES *taos_consume(TAOS_SUB *tsub)
-    'taos_consume': [ ref.types.void_ptr, [ref.types.void_ptr] ],
+    'taos_consume': [ref.types.void_ptr, [ref.types.void_ptr]],
     //void taos_unsubscribe(TAOS_SUB *tsub);
-    'taos_unsubscribe': [ ref.types.void, [ ref.types.void_ptr ] ],
+    'taos_unsubscribe': [ref.types.void, [ref.types.void_ptr]],
 
     // Continuous Query
     //TAOS_STREAM *taos_open_stream(TAOS *taos, char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
     //                              int64_t stime, void *param, void (*callback)(void *));
-    'taos_open_stream': [ ref.types.void_ptr, [ ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.int64, ref.types.void_ptr, ref.types.void_ptr ] ],
+    'taos_open_stream': [ref.types.void_ptr, [ref.types.void_ptr, ref.types.char_ptr, ref.types.void_ptr, ref.types.int64, ref.types.void_ptr, ref.types.void_ptr]],
     //void taos_close_stream(TAOS_STREAM *tstr);
-    'taos_close_stream': [ ref.types.void, [ ref.types.void_ptr ] ]
+    'taos_close_stream': [ref.types.void, [ref.types.void_ptr]]
 
   });
   if (pass == false) {
@@ -264,7 +265,7 @@ function CTaosInterface (config = null, pass = false) {
       try {
         this._config = ref.allocCString(config);
       }
-      catch(err){
+      catch (err) {
         throw "Attribute Error: config is expected as a str";
       }
     }
@@ -276,38 +277,38 @@ function CTaosInterface (config = null, pass = false) {
   return this;
 }
 CTaosInterface.prototype.config = function config() {
-    return this._config;
-  }
-CTaosInterface.prototype.connect = function connect(host=null, user="root", password="taosdata", db=null, port=0) {
-  let _host,_user,_password,_db,_port;
-  try  {
+  return this._config;
+}
+CTaosInterface.prototype.connect = function connect(host = null, user = "root", password = "taosdata", db = null, port = 0) {
+  let _host, _user, _password, _db, _port;
+  try {
     _host = host != null ? ref.allocCString(host) : ref.alloc(ref.types.char_ptr, ref.NULL);
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: host is expected as a str";
   }
   try {
     _user = ref.allocCString(user)
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: user is expected as a str";
   }
   try {
     _password = ref.allocCString(password);
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: password is expected as a str";
   }
   try {
     _db = db != null ? ref.allocCString(db) : ref.alloc(ref.types.char_ptr, ref.NULL);
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: db is expected as a str";
   }
   try {
     _port = ref.alloc(ref.types.int, port);
   }
-  catch(err) {
+  catch (err) {
     throw TypeError("port is expected as an int")
   }
   let connection = this.libtaos.taos_connect(_host, _user, _password, _db, _port);
@@ -324,10 +325,10 @@ CTaosInterface.prototype.close = function close(connection) {
   console.log("Connection is closed");
 }
 CTaosInterface.prototype.query = function query(connection, sql) {
-    return this.libtaos.taos_query(connection, ref.allocCString(sql));
+  return this.libtaos.taos_query(connection, ref.allocCString(sql));
 }
-CTaosInterface.prototype.affectedRows = function affectedRows(connection) {
-  return this.libtaos.taos_affected_rows(connection);
+CTaosInterface.prototype.affectedRows = function affectedRows(result) {
+  return this.libtaos.taos_affected_rows(result);
 }
 CTaosInterface.prototype.useResult = function useResult(result) {
 
@@ -337,8 +338,8 @@ CTaosInterface.prototype.useResult = function useResult(result) {
     pfields = ref.reinterpret(pfields, this.fieldsCount(result) * 68, 0);
     for (let i = 0; i < pfields.length; i += 68) {
       //0 - 63 = name //64 - 65 = bytes, 66 - 67 = type
-      fields.push( {
-        name: ref.readCString(ref.reinterpret(pfields,65,i)),
+      fields.push({
+        name: ref.readCString(ref.reinterpret(pfields, 65, i)),
         type: pfields[i + 65],
         bytes: pfields[i + 66]
       })
@@ -347,11 +348,10 @@ CTaosInterface.prototype.useResult = function useResult(result) {
   return fields;
 }
 CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) {
-  //let pblock = ref.ref(ref.ref(ref.NULL)); // equal to our raw data
-  let pblock = this.libtaos.taos_fetch_row(result);
-  let num_of_rows = 1;
-  if (ref.isNull(pblock) == true) {
-    return {block:null, num_of_rows:0};
+  let pblock = ref.NULL_POINTER;
+  let num_of_rows = this.libtaos.taos_fetch_block(result, pblock);
+  if (ref.isNull(pblock.deref()) == true) {
+    return { block: null, num_of_rows: 0 };
   }
 
   var fieldL = this.libtaos.taos_fetch_lengths(result);
@@ -361,8 +361,8 @@ CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) {
   var fieldlens = [];
 
   if (ref.isNull(fieldL) == false) {
-    for (let i = 0; i < fields.length; i ++) {
-	  let plen = ref.reinterpret(fieldL, 4, i*4);
+    for (let i = 0; i < fields.length; i++) {
+      let plen = ref.reinterpret(fieldL, 4, i * 4);
       let len = plen.readInt32LE(0);
       fieldlens.push(len);
     }
@@ -370,21 +370,23 @@ CTaosInterface.prototype.fetchBlock = function fetchBlock(result, fields) {
 
   let blocks = new Array(fields.length);
   blocks.fill(null);
-  //num_of_rows = Math.abs(num_of_rows);
+  num_of_rows = Math.abs(num_of_rows);
   let offset = 0;
+  let ptr = pblock.deref();
+
   for (let i = 0; i < fields.length; i++) {
-    pdata = ref.reinterpret(pblock,8,i*8);
-	if(ref.isNull(pdata.readPointer())){
-		blocks[i] = new Array();
-	}else{
-    	pdata = ref.ref(pdata.readPointer());
-    	if (!convertFunctions[fields[i]['type']] ) {
-      		throw new errors.DatabaseError("Invalid data type returned from database");
-   		}
-    	blocks[i] = convertFunctions[fields[i]['type']](pdata, 1, fieldlens[i], offset, isMicro);
-	}
+    pdata = ref.reinterpret(ptr, 8, i * 8);
+    if (ref.isNull(pdata.readPointer())) {
+      blocks[i] = new Array();
+    } else {
+      pdata = ref.ref(pdata.readPointer());
+      if (!convertFunctions[fields[i]['type']]) {
+        throw new errors.DatabaseError("Invalid data type returned from database");
+      }
+      blocks[i] = convertFunctions[fields[i]['type']](pdata, num_of_rows, fieldlens[i], offset, isMicro);
+    }
   }
-  return {blocks: blocks, num_of_rows:Math.abs(num_of_rows)}
+  return { blocks: blocks, num_of_rows }
 }
 CTaosInterface.prototype.fetchRow = function fetchRow(result, fields) {
   let row = this.libtaos.taos_fetch_row(result);
@@ -414,7 +416,7 @@ CTaosInterface.prototype.errStr = function errStr(result) {
 // Async
 CTaosInterface.prototype.query_a = function query_a(connection, sql, callback, param = ref.ref(ref.NULL)) {
   // void taos_query_a(TAOS *taos, char *sqlstr, void (*fp)(void *param, TAOS_RES *, int), void *param)
-  callback = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.int ], callback);
+  callback = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.int], callback);
   this.libtaos.taos_query_a(connection, ref.allocCString(sql), callback, param);
   return param;
 }
@@ -440,45 +442,45 @@ CTaosInterface.prototype.fetch_rows_a = function fetch_rows_a(result, callback,
     var fieldlens = [];
     if (ref.isNull(fieldL) == false) {
 
-      for (let i = 0; i < fields.length; i ++) {
-        let plen = ref.reinterpret(fieldL, 8, i*8);
-        let len = ref.get(plen,0,ref.types.int32);
+      for (let i = 0; i < fields.length; i++) {
+        let plen = ref.reinterpret(fieldL, 8, i * 8);
+        let len = ref.get(plen, 0, ref.types.int32);
         fieldlens.push(len);
       }
     }
-    if (numOfRows2 > 0){
+    if (numOfRows2 > 0) {
       for (let i = 0; i < fields.length; i++) {
-		if(ref.isNull(pdata.readPointer())){
-			blocks[i] = new Array();
-		}else{
-			if (!convertFunctions[fields[i]['type']] ) { 
-          		throw new errors.DatabaseError("Invalid data type returned from database");
-        	}   
-        	let prow = ref.reinterpret(row,8,i*8);
-        	prow = prow.readPointer();
-        	prow = ref.ref(prow);
-        	blocks[i] = convertFunctions[fields[i]['type']](prow, 1, fieldlens[i], offset, isMicro);
-        	//offset += fields[i]['bytes'] * numOfRows2;
-		}		
+        if (ref.isNull(pdata.readPointer())) {
+          blocks[i] = new Array();
+        } else {
+          if (!convertFunctions[fields[i]['type']]) {
+            throw new errors.DatabaseError("Invalid data type returned from database");
+          }
+          let prow = ref.reinterpret(row, 8, i * 8);
+          prow = prow.readPointer();
+          prow = ref.ref(prow);
+          blocks[i] = convertFunctions[fields[i]['type']](prow, 1, fieldlens[i], offset, isMicro);
+          //offset += fields[i]['bytes'] * numOfRows2;
+        }
       }
     }
     callback(param2, result2, numOfRows2, blocks);
   }
-  asyncCallbackWrapper = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.types.int ], asyncCallbackWrapper);
+  asyncCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.types.int], asyncCallbackWrapper);
   this.libtaos.taos_fetch_rows_a(result, asyncCallbackWrapper, param);
   return param;
 }
 // Fetch field meta data by result handle
-CTaosInterface.prototype.fetchFields_a = function fetchFields_a (result) {
+CTaosInterface.prototype.fetchFields_a = function fetchFields_a(result) {
   let pfields = this.fetchFields(result);
   let pfieldscount = this.numFields(result);
   let fields = [];
   if (ref.isNull(pfields) == false) {
-    pfields = ref.reinterpret(pfields, 68 * pfieldscount , 0);
+    pfields = ref.reinterpret(pfields, 68 * pfieldscount, 0);
     for (let i = 0; i < pfields.length; i += 68) {
       //0 - 64 = name //65 = type, 66 - 67 = bytes
-      fields.push( {
-        name: ref.readCString(ref.reinterpret(pfields,65,i)),
+      fields.push({
+        name: ref.readCString(ref.reinterpret(pfields, 65, i)),
         type: pfields[i + 65],
         bytes: pfields[i + 66]
       })
@@ -488,7 +490,7 @@ CTaosInterface.prototype.fetchFields_a = function fetchFields_a (result) {
 }
 // Stop a query by result handle
 CTaosInterface.prototype.stopQuery = function stopQuery(result) {
-  if (result != null){
+  if (result != null) {
     this.libtaos.taos_stop_query(result);
   }
   else {
@@ -509,13 +511,13 @@ CTaosInterface.prototype.subscribe = function subscribe(connection, restart, top
   try {
     sql = sql != null ? ref.allocCString(sql) : ref.alloc(ref.types.char_ptr, ref.NULL);
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: sql is expected as a str";
   }
   try {
     topic = topic != null ? ref.allocCString(topic) : ref.alloc(ref.types.char_ptr, ref.NULL);
   }
-  catch(err) {
+  catch (err) {
     throw TypeError("topic is expected as a str");
   }
 
@@ -539,8 +541,8 @@ CTaosInterface.prototype.consume = function consume(subscription) {
     pfields = ref.reinterpret(pfields, this.numFields(result) * 68, 0);
     for (let i = 0; i < pfields.length; i += 68) {
       //0 - 63 = name //64 - 65 = bytes, 66 - 67 = type
-      fields.push( {
-        name: ref.readCString(ref.reinterpret(pfields,64,i)),
+      fields.push({
+        name: ref.readCString(ref.reinterpret(pfields, 64, i)),
         bytes: pfields[i + 64],
         type: pfields[i + 66]
       })
@@ -548,7 +550,7 @@ CTaosInterface.prototype.consume = function consume(subscription) {
   }
 
   let data = [];
-  while(true) {
+  while (true) {
     let { blocks, num_of_rows } = this.fetchBlock(result, fields);
     if (num_of_rows == 0) {
       break;
@@ -559,7 +561,7 @@ CTaosInterface.prototype.consume = function consume(subscription) {
       for (let j = 0; j < fields.length; j++) {
         rowBlock[j] = blocks[j][i];
       }
-      data[data.length-1] = (rowBlock);
+      data[data.length - 1] = (rowBlock);
     }
   }
   return { data: data, fields: fields, result: result };
@@ -570,11 +572,11 @@ CTaosInterface.prototype.unsubscribe = function unsubscribe(subscription) {
 }
 
 // Continuous Query
-CTaosInterface.prototype.openStream = function openStream(connection, sql, callback, stime,stoppingCallback, param = ref.ref(ref.NULL)) {
+CTaosInterface.prototype.openStream = function openStream(connection, sql, callback, stime, stoppingCallback, param = ref.ref(ref.NULL)) {
   try {
     sql = ref.allocCString(sql);
   }
-  catch(err) {
+  catch (err) {
     throw "Attribute Error: sql string is expected as a str";
   }
   var cti = this;
@@ -587,7 +589,7 @@ CTaosInterface.prototype.openStream = function openStream(connection, sql, callb
     let offset = 0;
     if (numOfRows2 > 0) {
       for (let i = 0; i < fields.length; i++) {
-        if (!convertFunctions[fields[i]['type']] ) {
+        if (!convertFunctions[fields[i]['type']]) {
           throw new errors.DatabaseError("Invalid data type returned from database");
         }
         blocks[i] = convertFunctions[fields[i]['type']](row, numOfRows2, fields[i]['bytes'], offset, isMicro);
@@ -596,8 +598,8 @@ CTaosInterface.prototype.openStream = function openStream(connection, sql, callb
     }
     callback(param2, result2, blocks, fields);
   }
-  asyncCallbackWrapper = ffi.Callback(ref.types.void, [ ref.types.void_ptr, ref.types.void_ptr, ref.refType(ref.types.void_ptr2) ], asyncCallbackWrapper);
-  asyncStoppingCallbackWrapper = ffi.Callback( ref.types.void, [ ref.types.void_ptr ], stoppingCallback);
+  asyncCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr, ref.types.void_ptr, ref.refType(ref.types.void_ptr2)], asyncCallbackWrapper);
+  asyncStoppingCallbackWrapper = ffi.Callback(ref.types.void, [ref.types.void_ptr], stoppingCallback);
   let streamHandle = this.libtaos.taos_open_stream(connection, sql, asyncCallbackWrapper, stime, param, asyncStoppingCallbackWrapper);
   if (ref.isNull(streamHandle)) {
     throw new errors.TDError('Failed to open a stream with TDengine');

src/connector/nodejs/nodetaos/cursor.js

@@ -1,7 +1,7 @@
 const ref = require('ref-napi');
 require('./globalfunc.js')
 const CTaosInterface = require('./cinterface')
-const errors = require ('./error')
+const errors = require('./error')
 const TaosQuery = require('./taosquery')
 const { PerformanceObserver, performance } = require('perf_hooks');
 module.exports = TDengineCursor;
@@ -22,7 +22,7 @@ module.exports = TDengineCursor;
  * @property {fields} - Array of the field objects in order from left to right of the latest data retrieved
  * @since 1.0.0
  */
-function TDengineCursor(connection=null) {
+function TDengineCursor(connection = null) {
   //All parameters are store for sync queries only.
   this._rowcount = -1;
   this._connection = null;
@@ -91,7 +91,7 @@ TDengineCursor.prototype.execute = function execute(operation, options, callback
     return null;
   }
 
-  if (typeof options == 'function')  {
+  if (typeof options == 'function') {
     callback = options;
   }
   if (typeof options != 'object') options = {}
@@ -144,10 +144,10 @@ TDengineCursor.prototype.execute = function execute(operation, options, callback
 
 }
 TDengineCursor.prototype._createAffectedResponse = function (num, time) {
-  return "Query OK, " + num  + " row(s) affected (" + (time * 0.001).toFixed(8) + "s)";
+  return "Query OK, " + num + " row(s) affected (" + (time * 0.001).toFixed(8) + "s)";
 }
 TDengineCursor.prototype._createSetResponse = function (num, time) {
-  return "Query OK, " + num  + " row(s) in set (" + (time * 0.001).toFixed(8) + "s)";
+  return "Query OK, " + num + " row(s) in set (" + (time * 0.001).toFixed(8) + "s)";
 }
 TDengineCursor.prototype.executemany = function executemany() {
 
@@ -176,27 +176,22 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) {
     throw new errors.OperationalError("Invalid use of fetchall, either result or fields from query are null. First execute a query first");
   }
 
-  let data = [];
+  let num_of_rows = this._chandle.affectedRows(this._result);
+  let data = new Array(num_of_rows);
+
   this._rowcount = 0;
-  //let nodetime = 0;
+
   let time = 0;
   const obs = new PerformanceObserver((items) => {
     time += items.getEntries()[0].duration;
     performance.clearMarks();
   });
-  /*
-  const obs2 = new PerformanceObserver((items) => {
-    nodetime += items.getEntries()[0].duration;
-    performance.clearMarks();
-  });
-  obs2.observe({ entryTypes: ['measure'] });
-  performance.mark('nodea');
-  */
   obs.observe({ entryTypes: ['measure'] });
   performance.mark('A');
-  while(true) {
-
+  while (true) {
     let blockAndRows = this._chandle.fetchBlock(this._result, this._fields);
+    // console.log(blockAndRows);
+    // break;
     let block = blockAndRows.blocks;
     let num_of_rows = blockAndRows.num_of_rows;
     if (num_of_rows == 0) {
@@ -205,22 +200,24 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) {
     this._rowcount += num_of_rows;
     let numoffields = this._fields.length;
     for (let i = 0; i < num_of_rows; i++) {
-      data.push([]);
+      // data.push([]);
 
       let rowBlock = new Array(numoffields);
       for (let j = 0; j < numoffields; j++) {
         rowBlock[j] = block[j][i];
       }
-      data[data.length-1] = (rowBlock);
+      data[this._rowcount - num_of_rows + i] = (rowBlock);
+      // data.push(rowBlock);
     }
 
   }
+  
   performance.mark('B');
   performance.measure('query', 'A', 'B');
   let response = this._createSetResponse(this._rowcount, time)
   console.log(response);
 
- // this._connection._clearResultSet();
+  // this._connection._clearResultSet();
   let fields = this.fields;
   this._reset_result();
   this.data = data;
@@ -239,12 +236,12 @@ TDengineCursor.prototype.fetchall = function fetchall(options, callback) {
  * @return {number | Buffer} Number of affected rows or a Buffer that points to the results of the query
  * @since 1.0.0
  */
-TDengineCursor.prototype.execute_a = function execute_a (operation, options, callback, param) {
+TDengineCursor.prototype.execute_a = function execute_a(operation, options, callback, param) {
   if (operation == undefined) {
     throw new errors.ProgrammingError('No operation passed as argument');
     return null;
   }
-  if (typeof options == 'function')  {
+  if (typeof options == 'function') {
     //we expect the parameter after callback to be param
     param = callback;
     callback = options;
@@ -265,14 +262,14 @@ TDengineCursor.prototype.execute_a = function execute_a (operation, options, cal
     }
 
     if (resCode >= 0) {
-//      let fieldCount = cr._chandle.numFields(res2);
-//      if (fieldCount == 0) {
-//        //cr._chandle.freeResult(res2);
-//        return res2;
-//      } 
-//      else {
-//        return res2;
-//      }
+      //      let fieldCount = cr._chandle.numFields(res2);
+      //      if (fieldCount == 0) {
+      //        //cr._chandle.freeResult(res2);
+      //        return res2;
+      //      } 
+      //      else {
+      //        return res2;
+      //      }
       return res2;
 
     }
@@ -317,7 +314,7 @@ TDengineCursor.prototype.execute_a = function execute_a (operation, options, cal
  * })
  */
 TDengineCursor.prototype.fetchall_a = function fetchall_a(result, options, callback, param = {}) {
-  if (typeof options == 'function')  {
+  if (typeof options == 'function') {
     //we expect the parameter after callback to be param
     param = callback;
     callback = options;
@@ -360,17 +357,17 @@ TDengineCursor.prototype.fetchall_a = function fetchall_a(result, options, callb
           for (let k = 0; k < fields.length; k++) {
             rowBlock[k] = block[k][j];
           }
-          data[data.length-1] = rowBlock;
+          data[data.length - 1] = rowBlock;
         }
       }
       cr._chandle.freeResult(result2); // free result, avoid seg faults and mem leaks!
-      callback(param2, result2, numOfRows2, {data:data,fields:fields});
+      callback(param2, result2, numOfRows2, { data: data, fields: fields });
 
     }
   }
   ref.writeObject(buf, 0, param);
   param = this._chandle.fetch_rows_a(result, asyncCallbackWrapper, buf); //returned param
-  return {param:param,result:result};
+  return { param: param, result: result };
 }
 /**
  * Stop a query given the result handle.
@@ -428,7 +425,7 @@ TDengineCursor.prototype.subscribe = function subscribe(config) {
  */
 TDengineCursor.prototype.consumeData = async function consumeData(subscription, callback) {
   while (true) {
-    let { data, fields, result} = this._chandle.consume(subscription);
+    let { data, fields, result } = this._chandle.consume(subscription);
     callback(data, fields, result);
   }
 }
@@ -450,30 +447,30 @@ TDengineCursor.prototype.unsubscribe = function unsubscribe(subscription) {
  * @return {Buffer} A buffer pointing to the stream handle
  * @since 1.3.0
  */
- TDengineCursor.prototype.openStream = function openStream(sql, callback, stime = 0, stoppingCallback, param = {}) {
-   let buf = ref.alloc('Object');
-   ref.writeObject(buf, 0, param);
+TDengineCursor.prototype.openStream = function openStream(sql, callback, stime = 0, stoppingCallback, param = {}) {
+  let buf = ref.alloc('Object');
+  ref.writeObject(buf, 0, param);
 
-   let asyncCallbackWrapper = function (param2, result2, blocks, fields) {
-     let data = [];
-     let num_of_rows = blocks[0].length;
-     for (let j = 0; j < num_of_rows; j++) {
-       data.push([]);
-       let rowBlock = new Array(fields.length);
-       for (let k = 0; k < fields.length; k++) {
-         rowBlock[k] = blocks[k][j];
-       }
-       data[data.length-1] = rowBlock;
-     }
-     callback(param2, result2, blocks, fields);
-   }
-   return this._chandle.openStream(this._connection._conn, sql, asyncCallbackWrapper, stime, stoppingCallback, buf);
- }
- /**
-  * Close a stream
-  * @param {Buffer} - A buffer pointing to the handle of the stream to be closed
-  * @since 1.3.0
-  */
- TDengineCursor.prototype.closeStream = function closeStream(stream) {
-   this._chandle.closeStream(stream);
- }
+  let asyncCallbackWrapper = function (param2, result2, blocks, fields) {
+    let data = [];
+    let num_of_rows = blocks[0].length;
+    for (let j = 0; j < num_of_rows; j++) {
+      data.push([]);
+      let rowBlock = new Array(fields.length);
+      for (let k = 0; k < fields.length; k++) {
+        rowBlock[k] = blocks[k][j];
+      }
+      data[data.length - 1] = rowBlock;
+    }
+    callback(param2, result2, blocks, fields);
+  }
+  return this._chandle.openStream(this._connection._conn, sql, asyncCallbackWrapper, stime, stoppingCallback, buf);
+}
+/**
+ * Close a stream
+ * @param {Buffer} - A buffer pointing to the handle of the stream to be closed
+ * @since 1.3.0
+ */
+TDengineCursor.prototype.closeStream = function closeStream(stream) {
+  this._chandle.closeStream(stream);
+}

src/connector/nodejs/package-lock.json

@@ -1,285 +0,0 @@
-{
-  "name": "td2.0-connector",
-  "version": "2.0.6",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "array-index": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/array-index/-/array-index-1.0.0.tgz",
-      "integrity": "sha1-7FanSe4QPk4Ix5C5w1PfFgVbl/k=",
-      "requires": {
-        "debug": "^2.2.0",
-        "es6-symbol": "^3.0.2"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
-        }
-      }
-    },
-    "d": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
-      "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
-      "requires": {
-        "es5-ext": "^0.10.50",
-        "type": "^1.0.1"
-      }
-    },
-    "debug": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
-      "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
-      "requires": {
-        "ms": "2.1.2"
-      }
-    },
-    "es5-ext": {
-      "version": "0.10.53",
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src/connector/nodejs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "td2.0-connector",
-  "version": "2.0.6",
+  "version": "2.0.7",
   "description": "A Node.js connector for TDengine.",
   "main": "tdengine.js",
   "directories": {

src/connector/odbc/examples/c/main.c

@@ -18,8 +18,8 @@
 #define CHK_TEST(statement)                       \
 do {                                              \
   D("testing: %s", #statement);                   \
-  int r = (statement);                            \
-  if (r) {                                        \
+  int _r = (statement);                            \
+  if (_r) {                                        \
     D("testing failed: %s", #statement);          \
     return 1;                                     \
   }                                               \
@@ -181,7 +181,7 @@ static int do_statement(SQLHSTMT stmt, const char *statement) {
     r = traverse_cols(stmt, cols);
     char buf[4096];
     while (1) {
-      SQLRETURN r = SQLFetch(stmt);
+      r = SQLFetch(stmt);
       if (r==SQL_NO_DATA) break;
       CHK_RESULT(r, SQL_HANDLE_STMT, stmt, "");
       for (size_t i=0; i<cols; ++i) {

src/connector/odbc/src/base/tsdb_impl.c

@@ -1762,8 +1762,8 @@ static SQLRETURN tsdb_conn_prepare(stmt_t *stmt) {
       tsdb_stmt->tsdb_params     = tsdb_params;
 
       for (int i=0; i<nums; ++i) {
-        SQLRETURN r = do_fill_param(stmt, i);
-        if (r) return r;
+        SQLRETURN _r = do_fill_param(stmt, i);
+        if (_r) return _r;
       }
     }
 

src/connector/python/.gitignore

@@ -0,0 +1,154 @@
+
+# Created by https://www.toptal.com/developers/gitignore/api/python
+# Edit at https://www.toptal.com/developers/gitignore?templates=python
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+pytestdebug.log
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+doc/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#poetry.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+# .env
+.env/
+.venv/
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+pythonenv*
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# operating system-related files
+# file properties cache/storage on macOS
+*.DS_Store
+# thumbnail cache on Windows
+Thumbs.db
+
+# profiling data
+.prof
+
+
+# End of https://www.toptal.com/developers/gitignore/api/python

src/connector/python/README.md

@@ -0,0 +1,17 @@
+# TDengine Connector for Python
+
+[TDengine] connector for Python enables python programs to access TDengine, using an API which is compliant with the Python DB API 2.0 (PEP-249). It uses TDengine C client library for client server communications.
+
+## Install
+
+```sh
+pip install git+https://github.com/taosdata/TDengine-connector-python
+```
+
+## Source Code
+
+[TDengine] connector for Python source code is hosted on [GitHub](https://github.com/taosdata/TDengine-connector-python).
+
+## License - AGPL
+
+Keep same with [TDengine](https://github.com/taosdata/TDengine).