diff --git a/include/client/taos.h b/include/client/taos.h
index 8f02d5610f..8b3fd14118 100644
--- a/include/client/taos.h
+++ b/include/client/taos.h
@@ -92,38 +92,14 @@ typedef struct taosField {
 
 typedef void (*__taos_async_fn_t)(void *param, TAOS_RES *, int code);
 
-typedef struct TAOS_BIND {
-  int        buffer_type;
-  void      *buffer;
-  uintptr_t  buffer_length;  // unused
-  uintptr_t *length;
-  int       *is_null;
-
-  int  is_unsigned;  // unused
-  int *error;        // unused
-  union {
-    int64_t        ts;
-    int8_t         b;
-    int8_t         v1;
-    int16_t        v2;
-    int32_t        v4;
-    int64_t        v8;
-    float          f4;
-    double         f8;
-    unsigned char *bin;
-    char          *nchar;
-  } u;
-  unsigned int allocated;
-} TAOS_BIND;
-
-typedef struct TAOS_MULTI_BIND {
+typedef struct TAOS_BIND_v2 {
   int       buffer_type;
   void     *buffer;
-  uintptr_t buffer_length;
+  int32_t   buffer_length;
   int32_t  *length;
   char     *is_null;
   int       num;
-} TAOS_MULTI_BIND;
+} TAOS_BIND_v2;
 
 typedef enum {
   SET_CONF_RET_SUCC = 0,
@@ -152,34 +128,34 @@ DLL_EXPORT void  taos_close(TAOS *taos);
 
 const char *taos_data_type(int type);
 
-DLL_EXPORT TAOS_STMT *taos_stmt_init(TAOS *taos);
-DLL_EXPORT int        taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length);
-DLL_EXPORT int        taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags);
-DLL_EXPORT int        taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name);
-DLL_EXPORT int        taos_stmt_set_sub_tbname(TAOS_STMT *stmt, const char *name);
+DLL_EXPORT TAOS_STMT  *taos_stmt_init(TAOS *taos);
+DLL_EXPORT int         taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length);
+DLL_EXPORT int         taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND_v2 *tags);
+DLL_EXPORT int         taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name);
+DLL_EXPORT int         taos_stmt_set_sub_tbname(TAOS_STMT *stmt, const char *name);
 
-DLL_EXPORT int       taos_stmt_is_insert(TAOS_STMT *stmt, int *insert);
-DLL_EXPORT int       taos_stmt_num_params(TAOS_STMT *stmt, int *nums);
-DLL_EXPORT int       taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes);
-DLL_EXPORT int       taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind);
-DLL_EXPORT int       taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind);
-DLL_EXPORT int       taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind, int colIdx);
-DLL_EXPORT int       taos_stmt_add_batch(TAOS_STMT *stmt);
-DLL_EXPORT int       taos_stmt_execute(TAOS_STMT *stmt);
-DLL_EXPORT TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt);
-DLL_EXPORT int       taos_stmt_close(TAOS_STMT *stmt);
-DLL_EXPORT char     *taos_stmt_errstr(TAOS_STMT *stmt);
-DLL_EXPORT int       taos_stmt_affected_rows(TAOS_STMT *stmt);
+DLL_EXPORT int         taos_stmt_is_insert(TAOS_STMT *stmt, int *insert);
+DLL_EXPORT int         taos_stmt_num_params(TAOS_STMT *stmt, int *nums);
+DLL_EXPORT int         taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes);
+DLL_EXPORT int         taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND_v2 *bind);
+DLL_EXPORT int         taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind);
+DLL_EXPORT int         taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind, int colIdx);
+DLL_EXPORT int         taos_stmt_add_batch(TAOS_STMT *stmt);
+DLL_EXPORT int         taos_stmt_execute(TAOS_STMT *stmt);
+DLL_EXPORT TAOS_RES   *taos_stmt_use_result(TAOS_STMT *stmt);
+DLL_EXPORT int         taos_stmt_close(TAOS_STMT *stmt);
+DLL_EXPORT char       *taos_stmt_errstr(TAOS_STMT *stmt);
+DLL_EXPORT int         taos_stmt_affected_rows(TAOS_STMT *stmt);
 
-DLL_EXPORT TAOS_RES *taos_query(TAOS *taos, const char *sql);
-DLL_EXPORT TAOS_RES *taos_query_l(TAOS *taos, const char *sql, int sqlLen);
+DLL_EXPORT TAOS_RES   *taos_query(TAOS *taos, const char *sql);
+DLL_EXPORT TAOS_RES   *taos_query_l(TAOS *taos, const char *sql, int sqlLen);
 
-DLL_EXPORT TAOS_ROW taos_fetch_row(TAOS_RES *res);
-DLL_EXPORT int      taos_result_precision(TAOS_RES *res);  // get the time precision of result
-DLL_EXPORT void     taos_free_result(TAOS_RES *res);
-DLL_EXPORT int      taos_field_count(TAOS_RES *res);
-DLL_EXPORT int      taos_num_fields(TAOS_RES *res);
-DLL_EXPORT int      taos_affected_rows(TAOS_RES *res);
+DLL_EXPORT TAOS_ROW    taos_fetch_row(TAOS_RES *res);
+DLL_EXPORT int         taos_result_precision(TAOS_RES *res);  // get the time precision of result
+DLL_EXPORT void        taos_free_result(TAOS_RES *res);
+DLL_EXPORT int         taos_field_count(TAOS_RES *res);
+DLL_EXPORT int         taos_num_fields(TAOS_RES *res);
+DLL_EXPORT int         taos_affected_rows(TAOS_RES *res);
 
 DLL_EXPORT TAOS_FIELD *taos_fetch_fields(TAOS_RES *res);
 DLL_EXPORT int         taos_select_db(TAOS *taos, const char *db);
diff --git a/include/common/trow.h b/include/common/trow.h
index a98b03fd53..7b0c009a11 100644
--- a/include/common/trow.h
+++ b/include/common/trow.h
@@ -684,6 +684,43 @@ static int32_t tdSRowResetBuf(SRowBuilder *pBuilder, void *pBuf) {
   return TSDB_CODE_SUCCESS;
 }
 
+/**
+ * @brief The invoker is responsible for memory alloc/dealloc.
+ *
+ * @param pBuilder
+ * @param pBuf Output buffer of STSRow
+ */
+static int32_t tdSRowGetBuf(SRowBuilder *pBuilder, void *pBuf) {
+  pBuilder->pBuf = (STSRow *)pBuf;
+  if (!pBuilder->pBuf) {
+    TASSERT(0);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  TASSERT(pBuilder->nBitmaps > 0 && pBuilder->flen > 0);
+
+  uint32_t len = 0;
+  switch (pBuilder->rowType) {
+    case TD_ROW_TP:
+#ifdef TD_SUPPORT_BITMAP
+      pBuilder->pBitmap = tdGetBitmapAddrTp(pBuilder->pBuf, pBuilder->flen);
+#endif
+      break;
+    case TD_ROW_KV:
+#ifdef TD_SUPPORT_BITMAP
+      pBuilder->pBitmap = tdGetBitmapAddrKv(pBuilder->pBuf, pBuilder->nBoundCols);
+#endif
+      break;
+    default:
+      TASSERT(0);
+      terrno = TSDB_CODE_INVALID_PARA;
+      return terrno;
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
+
 /**
  * @brief 由调用方管理存储空间的分配及释放，一次输入多个参数
  *
diff --git a/include/libs/nodes/querynodes.h b/include/libs/nodes/querynodes.h
index d2f73e4071..93282f658a 100644
--- a/include/libs/nodes/querynodes.h
+++ b/include/libs/nodes/querynodes.h
@@ -283,12 +283,12 @@ typedef struct SVgDataBlocks {
 } SVgDataBlocks;
 
 typedef struct SVnodeModifOpStmt {
-  ENodeType   nodeType;
-  ENodeType   sqlNodeType;
-  SArray*     pDataBlocks;         // data block for each vgroup, SArray<SVgDataBlocks*>.
-  uint8_t     payloadType;         // EPayloadType. 0: K-V payload for non-prepare insert, 1: rawPayload for prepare insert
-  uint32_t    insertType;          // insert data from [file|sql statement| bound statement]
-  const char* sql;                 // current sql statement position
+  ENodeType    nodeType;
+  ENodeType    sqlNodeType;
+  SArray*      pDataBlocks;         // data block for each vgroup, SArray<SVgDataBlocks*>.
+  uint8_t      payloadType;         // EPayloadType. 0: K-V payload for non-prepare insert, 1: rawPayload for prepare insert
+  uint32_t     insertType;          // insert data from [file|sql statement| bound statement]
+  const char*  sql;                 // current sql statement position
 } SVnodeModifOpStmt;
 
 typedef struct SExplainOptions {
diff --git a/include/libs/parser/parser.h b/include/libs/parser/parser.h
index 02cd073226..58482735ba 100644
--- a/include/libs/parser/parser.h
+++ b/include/libs/parser/parser.h
@@ -21,6 +21,15 @@ extern "C" {
 #endif
 
 #include "querynodes.h"
+#include "query.h"
+
+typedef struct SStmtCallback {
+  TAOS_STMT* pStmt;
+  int32_t (*getTbNameFn)(TAOS_STMT*, char**);
+  int32_t (*setBindInfoFn)(TAOS_STMT*, STableMeta*, void*);
+  int32_t (*setExecInfoFn)(TAOS_STMT*, SHashObj*, SHashObj*);
+  int32_t (*getExecInfoFn)(TAOS_STMT*, SHashObj**, SHashObj**);
+} SStmtCallback;
 
 typedef struct SParseContext {
   uint64_t         requestId;
@@ -34,6 +43,7 @@ typedef struct SParseContext {
   char            *pMsg;           // extended error message if exists to help identifying the problem in sql statement.
   int32_t          msgLen;         // max length of the msg
   struct SCatalog *pCatalog;
+  SStmtCallback   *pStmtCb;
 } SParseContext;
 
 typedef struct SCmdMsgInfo {
@@ -66,11 +76,27 @@ typedef struct SQuery {
 } SQuery;
 
 int32_t qParseQuerySql(SParseContext* pCxt, SQuery** pQuery);
+bool isInsertSql(const char* pStr, size_t length);
 
 void qDestroyQuery(SQuery* pQueryNode);
 
 int32_t qExtractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pSchema);
 
+int32_t qBuildStmtOutput(SQuery* pQuery, SHashObj* pVgHash, SHashObj* pBlockHash);
+int32_t qResetStmtDataBlock(void* block, bool keepBuf);
+int32_t qCloneStmtDataBlock(void** pDst, void* pSrc);
+void    qFreeStmtDataBlock(void* pDataBlock);
+int32_t qRebuildStmtDataBlock(void** pDst, void* pSrc);
+void    qDestroyStmtDataBlock(void* pBlock);
+int32_t qBindStmtColsValue(void *pBlock, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen);
+int32_t qBindStmtSingleColValue(void *pBlock, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen, int32_t colIdx, int32_t rowNum);
+int32_t qBuildStmtColFields(void *pDataBlock, int32_t *fieldNum, TAOS_FIELD** fields);
+int32_t qBuildStmtTagFields(void *pBlock, void *boundTags, int32_t *fieldNum, TAOS_FIELD** fields);
+int32_t qBindStmtTagsValue(void *pBlock, void *boundTags, int64_t suid, SName *pName, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen);
+void destroyBoundColumnInfo(void* pBoundInfo);
+int32_t qCreateSName(SName* pName, const char* pTableName, int32_t acctId, char* dbName, char *msgBuf, int32_t msgBufLen);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/libs/planner/planner.h b/include/libs/planner/planner.h
index f343295c56..eba70b8098 100644
--- a/include/libs/planner/planner.h
+++ b/include/libs/planner/planner.h
@@ -45,7 +45,6 @@ int32_t qCreateQueryPlan(SPlanContext* pCxt, SQueryPlan** pPlan, SArray* pExecNo
 // @pSource one execution location of this group of datasource subplans 
 int32_t qSetSubplanExecutionNode(SSubplan* pSubplan, int32_t groupId, SDownstreamSourceNode* pSource);
 
-typedef TAOS_MULTI_BIND TAOS_BIND_v2; // todo remove
 int32_t qStmtBindParam(SQueryPlan* pPlan, TAOS_BIND_v2* pParams);
 
 // Convert to subplan to string for the scheduler to send to the executor
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 14d0160137..e04ff2730a 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -132,6 +132,9 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TSC_INVALID_JSON_TYPE         TAOS_DEF_ERROR_CODE(0, 0x0222)
 #define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0223)
 #define TSDB_CODE_TSC_INVALID_INPUT             TAOS_DEF_ERROR_CODE(0, 0X0224)
+#define TSDB_CODE_TSC_STMT_API_ERROR            TAOS_DEF_ERROR_CODE(0, 0X0225)
+#define TSDB_CODE_TSC_STMT_TBNAME_ERROR         TAOS_DEF_ERROR_CODE(0, 0X0226)
+#define TSDB_CODE_TSC_STMT_CLAUSE_ERROR         TAOS_DEF_ERROR_CODE(0, 0X0227)
 
 // mnode-common
 #define TSDB_CODE_MND_APP_ERROR                 TAOS_DEF_ERROR_CODE(0, 0x0300)
diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index 9363cf00a2..35932cc13e 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -205,7 +205,8 @@ typedef struct SRequestObj {
   char*                sqlstr;  // sql string
   int32_t              sqlLen;
   int64_t              self;
-  char*                msgBuf;  // error msg buffer
+  char*                msgBuf;
+  int32_t              msgBufLen;
   int32_t              code;
   SArray*              dbList;
   SArray*              tableList;
@@ -278,7 +279,8 @@ void initMsgHandleFp();
 TAOS* taos_connect_internal(const char* ip, const char* user, const char* pass, const char* auth, const char* db,
                             uint16_t port, int connType);
 
-int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery);
+int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery, SStmtCallback* pStmtCb);
+
 int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray* pNodeList);
 
 int32_t buildRequest(STscObj* pTscObj, const char* sql, int sqlLen, SRequestObj** pRequest);
@@ -302,6 +304,9 @@ int hbAddConnInfo(SAppHbMgr* pAppHbMgr, SClientHbKey connKey, void* key, void* v
 // --- mq
 void hbMgrInitMqHbRspHandle();
 
+SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, int32_t code, bool keepQuery);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/client/inc/clientStmt.h b/source/client/inc/clientStmt.h
index c29361758d..219257ba74 100644
--- a/source/client/inc/clientStmt.h
+++ b/source/client/inc/clientStmt.h
@@ -19,6 +19,9 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+#include "catalog.h"
+
+typedef void STableDataBlocks;
 
 typedef enum {
   STMT_TYPE_INSERT = 1,
@@ -26,17 +29,64 @@ typedef enum {
   STMT_TYPE_QUERY,
 } STMT_TYPE;
 
-typedef struct STscStmt {
-  STMT_TYPE type;
-  //int16_t  last;
-  //STscObj* taos;
-  //SSqlObj* pSql;
-  //SMultiTbStmt mtb;
-  //SNormalStmt normal;
+typedef enum {
+  STMT_INIT = 1,
+  STMT_PREPARE,
+  STMT_SETTBNAME,
+  STMT_SETTAGS,
+  STMT_FETCH_TAG_FIELDS,
+  STMT_FETCH_COL_FIELDS,
+  STMT_BIND,
+  STMT_BIND_COL,
+  STMT_ADD_BATCH,
+  STMT_EXECUTE,
+} STMT_STATUS;
 
-  //int numOfRows;
+typedef struct SStmtTableCache {
+  STableDataBlocks* pDataBlock;
+  void*             boundTags;
+} SStmtTableCache;
+
+typedef struct SStmtBindInfo {
+  bool         needParse;
+  uint64_t     tbUid;
+  uint64_t     tbSuid;
+  int32_t      sBindRowNum;
+  int32_t      sBindLastIdx;
+  int8_t       tbType;
+  void*        boundTags;  
+  char*        tbName;
+  SName        sname;
+} SStmtBindInfo;
+
+typedef struct SStmtExecInfo {
+  SRequestObj* pRequest;
+  SHashObj*    pVgHash;
+  SHashObj*    pBlockHash;
+} SStmtExecInfo;
+
+typedef struct SStmtSQLInfo {
+  STMT_TYPE    type;
+  STMT_STATUS  status;
+  bool         autoCreate;
+  uint64_t     runTimes;
+  SHashObj*    pTableCache;   //SHash<SStmtTableCache>
+  SQuery*      pQuery;
+  char*        sqlStr;
+  int32_t      sqlLen;
+} SStmtSQLInfo;
+
+typedef struct STscStmt {
+  STscObj*      taos;
+  SCatalog*     pCatalog;
+  int32_t       affectedRows;
+
+  SStmtSQLInfo  sql;
+  SStmtExecInfo exec;
+  SStmtBindInfo bInfo;
 } STscStmt;
 
+
 #define STMT_ERR_RET(c) do { int32_t _code = c; if (_code != TSDB_CODE_SUCCESS) { terrno = _code; return _code; } } while (0)
 #define STMT_RET(c) do { int32_t _code = c; if (_code != TSDB_CODE_SUCCESS) { terrno = _code; } return _code; } while (0)
 #define STMT_ERR_JRET(c) do { code = c; if (code != TSDB_CODE_SUCCESS) { terrno = code; goto _return; } } while (0)
@@ -44,16 +94,16 @@ typedef struct STscStmt {
 TAOS_STMT *stmtInit(TAOS *taos);
 int stmtClose(TAOS_STMT *stmt);
 int stmtExec(TAOS_STMT *stmt);
-char *stmtErrstr(TAOS_STMT *stmt);
+const char *stmtErrstr(TAOS_STMT *stmt);
 int stmtAffectedRows(TAOS_STMT *stmt);
-int stmtBind(TAOS_STMT *stmt, TAOS_BIND *bind);
 int stmtPrepare(TAOS_STMT *stmt, const char *sql, unsigned long length);
-int stmtSetTbNameTags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags);
+int stmtSetTbName(TAOS_STMT *stmt, const char *tbName);
+int stmtSetTbTags(TAOS_STMT *stmt, TAOS_BIND_v2 *tags);
 int stmtIsInsert(TAOS_STMT *stmt, int *insert);
 int stmtGetParamNum(TAOS_STMT *stmt, int *nums);
 int stmtAddBatch(TAOS_STMT *stmt);
 TAOS_RES *stmtUseResult(TAOS_STMT *stmt);
-int stmtBindBatch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind);
+int stmtBindBatch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind, int32_t colIdx);
 
 
 #ifdef __cplusplus
diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index ad736fb195..0b75e3a30b 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -186,6 +186,7 @@ void *createRequest(STscObj *pObj, __taos_async_fn_t fp, void *param, int32_t ty
   pRequest->pTscObj = pObj;
   pRequest->body.fp = fp;  // not used it yet
   pRequest->msgBuf = taosMemoryCalloc(1, ERROR_MSG_BUF_DEFAULT_SIZE);
+  pRequest->msgBufLen = ERROR_MSG_BUF_DEFAULT_SIZE;
   tsem_init(&pRequest->body.rspSem, 0, 0);
 
   registerRequest(pRequest);
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 632df51d8c..0011c8baf3 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -157,7 +157,7 @@ int32_t buildRequest(STscObj* pTscObj, const char* sql, int sqlLen, SRequestObj*
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery) {
+int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery, SStmtCallback* pStmtCb) {
   STscObj* pTscObj = pRequest->pTscObj;
 
   SParseContext cxt = {
@@ -170,6 +170,7 @@ int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery) {
       .pMsg = pRequest->msgBuf,
       .msgLen = ERROR_MSG_BUF_DEFAULT_SIZE,
       .pTransporter = pTscObj->pAppInfo->pTransporter,
+      .pStmtCb = pStmtCb,
   };
 
   cxt.mgmtEpSet = getEpSet_s(&pTscObj->pAppInfo->mgmtEp);
@@ -298,16 +299,9 @@ int32_t scheduleQuery(SRequestObj* pRequest, SQueryPlan* pDag, SArray* pNodeList
   return pRequest->code;
 }
 
-SRequestObj* execQueryImpl(STscObj* pTscObj, const char* sql, int sqlLen) {
-  SRequestObj* pRequest = NULL;
-  SQuery*      pQuery = NULL;
+SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, int32_t code, bool keepQuery) {
   SArray*      pNodeList = taosArrayInit(4, sizeof(struct SQueryNodeAddr));
 
-  int32_t code = buildRequest(pTscObj, sql, sqlLen, &pRequest);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = parseSql(pRequest, false, &pQuery);
-  }
-
   if (TSDB_CODE_SUCCESS == code) {
     switch (pQuery->execMode) {
       case QUERY_EXEC_MODE_LOCAL:
@@ -331,7 +325,10 @@ SRequestObj* execQueryImpl(STscObj* pTscObj, const char* sql, int sqlLen) {
   }
 
   taosArrayDestroy(pNodeList);
-  qDestroyQuery(pQuery);
+  if (!keepQuery) {
+    qDestroyQuery(pQuery);
+  }
+  
   if (NULL != pRequest && TSDB_CODE_SUCCESS != code) {
     pRequest->code = terrno;
   }
@@ -339,6 +336,19 @@ SRequestObj* execQueryImpl(STscObj* pTscObj, const char* sql, int sqlLen) {
   return pRequest;
 }
 
+
+SRequestObj* launchQuery(STscObj* pTscObj, const char* sql, int sqlLen) {
+  SRequestObj* pRequest = NULL;
+  SQuery*      pQuery = NULL;
+
+  int32_t code = buildRequest(pTscObj, sql, sqlLen, &pRequest);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = parseSql(pRequest, false, &pQuery, NULL);
+  }
+
+  return launchQueryImpl(pRequest, pQuery, code, false);
+}
+
 int32_t refreshMeta(STscObj* pTscObj, SRequestObj* pRequest) {
   SCatalog* pCatalog = NULL;
   int32_t   code = 0;
@@ -383,7 +393,7 @@ SRequestObj* execQuery(STscObj* pTscObj, const char* sql, int sqlLen) {
   int32_t      code = 0;
 
   while (retryNum++ < REQUEST_MAX_TRY_TIMES) {
-    pRequest = execQueryImpl(pTscObj, sql, sqlLen);
+    pRequest = launchQuery(pTscObj, sql, sqlLen);
     if (TSDB_CODE_SUCCESS == pRequest->code || !NEED_CLIENT_HANDLE_ERROR(pRequest->code)) {
       break;
     }
@@ -715,7 +725,8 @@ static int32_t doConvertUCS4(SReqResultInfo* pResultInfo, int32_t numOfRows, int
 
           int32_t len = taosUcs4ToMbs((TdUcs4*)varDataVal(pStart), varDataLen(pStart), varDataVal(p));
           ASSERT(len <= bytes);
-
+          ASSERT((p + len) < (pResultInfo->convertBuf[i] + colLength[i]));
+          
           varDataSetLen(p, len);
           pCol->offset[j] = (p - pResultInfo->convertBuf[i]);
           p += (len + VARSTR_HEADER_SIZE);
diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index 6472dea556..e730f0a34a 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -128,6 +128,10 @@ const char *taos_errstr(TAOS_RES *res) {
 }
 
 void taos_free_result(TAOS_RES *res) {
+  if (NULL == res) {
+    return;
+  }
+  
   if (TD_RES_QUERY(res)) {
     SRequestObj *pRequest = (SRequestObj *)res;
     destroyRequest(pRequest);
@@ -579,56 +583,6 @@ TAOS_STMT *taos_stmt_init(TAOS *taos) {
   return stmtInit(taos);
 }
 
-int taos_stmt_close(TAOS_STMT *stmt) {
-  if (stmt == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return terrno;
-  }
-
-  return stmtClose(stmt);
-}
-
-int taos_stmt_execute(TAOS_STMT *stmt) {
-  if (stmt == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return terrno;
-  }
-
-  return stmtExec(stmt);
-}
-
-char *taos_stmt_errstr(TAOS_STMT *stmt) {
-  if (stmt == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return NULL;
-  }
-
-  return stmtErrstr(stmt);
-}
-
-int taos_stmt_affected_rows(TAOS_STMT *stmt) {
-  if (stmt == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return 0;
-  }
-
-  return stmtAffectedRows(stmt);
-}
-
-int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind) {
-  if (stmt == NULL || bind == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return terrno;
-  }
-
-  return stmtBind(stmt, bind);
-}
-
 int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length) {
   if (stmt == NULL || sql == NULL) {
     tscError("NULL parameter for %s", __FUNCTION__);
@@ -639,14 +593,23 @@ int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length) {
   return stmtPrepare(stmt, sql, length);
 }
 
-int taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags) {
-  if (stmt == NULL || name == NULL || tags == NULL) {
+int taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND_v2 *tags) {
+  if (stmt == NULL || name == NULL) {
     tscError("NULL parameter for %s", __FUNCTION__);
     terrno = TSDB_CODE_INVALID_PARA;
     return terrno;
   }
 
-  return stmtSetTbNameTags(stmt, name, tags);
+  int32_t code = stmtSetTbName(stmt, name);
+  if (code) {
+    return code;
+  }
+
+  if (tags) {
+    return stmtSetTbTags(stmt, tags);
+  }
+
+  return TSDB_CODE_SUCCESS;
 }
 
 int taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name) {
@@ -656,7 +619,75 @@ int taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name) {
     return terrno;
   }
 
-  return stmtSetTbNameTags(stmt, name, NULL);
+  return stmtSetTbName(stmt, name);
+}
+
+int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND_v2 *bind) {
+  if (stmt == NULL || bind == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  if (bind->num > 1) {
+    tscError("invalid bind number %d for %s", bind->num, __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+  
+  return stmtBindBatch(stmt, bind, -1);
+}
+
+int taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind) {
+  if (stmt == NULL || bind == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  if (bind->num <= 0 || bind->num > INT16_MAX) {
+    tscError("invalid bind num %d", bind->num);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  return stmtBindBatch(stmt, bind, -1);
+}
+
+int taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind, int colIdx) {
+  if (stmt == NULL || bind == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  if (colIdx < 0) {
+    tscError("invalid bind column idx %d", colIdx);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+  
+  return stmtBindBatch(stmt, bind, colIdx);
+}
+
+int taos_stmt_add_batch(TAOS_STMT *stmt) {
+  if (stmt == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  return stmtAddBatch(stmt);
+}
+
+int taos_stmt_execute(TAOS_STMT *stmt) {
+  if (stmt == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
+  return stmtExec(stmt);
 }
 
 int taos_stmt_is_insert(TAOS_STMT *stmt, int *insert) {
@@ -679,16 +710,6 @@ int taos_stmt_num_params(TAOS_STMT *stmt, int *nums) {
   return stmtGetParamNum(stmt, nums);
 }
 
-int taos_stmt_add_batch(TAOS_STMT *stmt) {
-  if (stmt == NULL) {
-    tscError("NULL parameter for %s", __FUNCTION__);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return terrno;
-  }
-
-  return stmtAddBatch(stmt);
-}
-
 TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt) {
   if (stmt == NULL) {
     tscError("NULL parameter for %s", __FUNCTION__);
@@ -699,14 +720,28 @@ TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt) {
   return stmtUseResult(stmt);
 }
 
-int taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind) {
-  if (stmt == NULL || bind == NULL) {
+char *taos_stmt_errstr(TAOS_STMT *stmt) {
+  return (char *)stmtErrstr(stmt);
+}
+
+int taos_stmt_affected_rows(TAOS_STMT *stmt) {
+  if (stmt == NULL) {
+    tscError("NULL parameter for %s", __FUNCTION__);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return 0;
+  }
+
+  return stmtAffectedRows(stmt);
+}
+
+int taos_stmt_close(TAOS_STMT *stmt) {
+  if (stmt == NULL) {
     tscError("NULL parameter for %s", __FUNCTION__);
     terrno = TSDB_CODE_INVALID_PARA;
     return terrno;
   }
 
-  return stmtBindBatch(stmt, bind);
+  return stmtClose(stmt);
 }
 
 TAOS_RES *taos_schemaless_insert(TAOS *taos, char *lines[], int numLines, int protocol, int precision) {
diff --git a/source/client/src/clientStmt.c b/source/client/src/clientStmt.c
index 8c4cff9251..8a5134e02a 100644
--- a/source/client/src/clientStmt.c
+++ b/source/client/src/clientStmt.c
@@ -4,86 +4,539 @@
 #include "clientStmt.h"
 #include "tdef.h"
 
+int32_t stmtSwitchStatus(STscStmt* pStmt, STMT_STATUS newStatus) {
+  switch (newStatus) {
+    case STMT_SETTBNAME:
+      break;
+    default:
+      break;
+  }
+
+  //STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
+
+  pStmt->sql.status = newStatus;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t stmtGetTbName(TAOS_STMT *stmt, char **tbName) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  pStmt->sql.type = STMT_TYPE_MULTI_INSERT;
+  
+  if (NULL == pStmt->bInfo.tbName) {
+    tscError("no table name set");
+    STMT_ERR_RET(TSDB_CODE_TSC_STMT_TBNAME_ERROR);
+  }
+
+  *tbName = pStmt->bInfo.tbName;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtSetBindInfo(TAOS_STMT* stmt, STableMeta* pTableMeta, void* tags) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  pStmt->bInfo.tbUid = pTableMeta->uid;
+  pStmt->bInfo.tbSuid = pTableMeta->suid;
+  pStmt->bInfo.tbType = pTableMeta->tableType;
+  pStmt->bInfo.boundTags = tags;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtSetExecInfo(TAOS_STMT* stmt, SHashObj* pVgHash, SHashObj* pBlockHash) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  pStmt->exec.pVgHash = pVgHash;
+  pStmt->exec.pBlockHash = pBlockHash;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtGetExecInfo(TAOS_STMT* stmt, SHashObj** pVgHash, SHashObj** pBlockHash) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  *pVgHash = pStmt->exec.pVgHash;
+  *pBlockHash = pStmt->exec.pBlockHash;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtCacheBlock(STscStmt *pStmt) {
+  if (pStmt->sql.type != STMT_TYPE_MULTI_INSERT) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  uint64_t uid;
+  if (TSDB_CHILD_TABLE == pStmt->bInfo.tbType) {
+    uid = pStmt->bInfo.tbSuid;
+  } else {
+    ASSERT(TSDB_NORMAL_TABLE == pStmt->bInfo.tbType);
+    uid = pStmt->bInfo.tbUid;
+  }
+
+  if (taosHashGet(pStmt->sql.pTableCache, &uid, sizeof(uid))) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  STableDataBlocks** pSrc = taosHashGet(pStmt->exec.pBlockHash, &uid, sizeof(uid));
+  STableDataBlocks* pDst = NULL;
+  
+  STMT_ERR_RET(qCloneStmtDataBlock(&pDst, *pSrc));
+
+  SStmtTableCache cache = {
+    .pDataBlock = pDst,
+    .boundTags = pStmt->bInfo.boundTags,
+  };
+
+  if (taosHashPut(pStmt->sql.pTableCache, &uid, sizeof(uid), &cache, sizeof(cache))) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  pStmt->bInfo.boundTags = NULL;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtParseSql(STscStmt* pStmt) {
+  SStmtCallback stmtCb = {
+    .pStmt = pStmt, 
+    .getTbNameFn = stmtGetTbName, 
+    .setBindInfoFn = stmtSetBindInfo,
+    .setExecInfoFn = stmtSetExecInfo,
+    .getExecInfoFn = stmtGetExecInfo,
+  };
+
+  if (NULL == pStmt->exec.pRequest) {
+    STMT_ERR_RET(buildRequest(pStmt->taos, pStmt->sql.sqlStr, pStmt->sql.sqlLen, &pStmt->exec.pRequest));
+  }
+  
+  STMT_ERR_RET(parseSql(pStmt->exec.pRequest, false, &pStmt->sql.pQuery, &stmtCb));
+
+  pStmt->bInfo.needParse = false;
+  
+  switch (nodeType(pStmt->sql.pQuery->pRoot)) {
+    case QUERY_NODE_VNODE_MODIF_STMT:
+      if (0 == pStmt->sql.type) {
+        pStmt->sql.type = STMT_TYPE_INSERT;
+      }
+      break;
+    case QUERY_NODE_SELECT_STMT:
+      pStmt->sql.type = STMT_TYPE_QUERY;
+      break;
+    default:
+      tscError("not supported stmt type %d", nodeType(pStmt->sql.pQuery->pRoot));
+      STMT_ERR_RET(TSDB_CODE_TSC_STMT_CLAUSE_ERROR);
+  }
+
+  STMT_ERR_RET(stmtCacheBlock(pStmt));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtCleanBindInfo(STscStmt* pStmt) {
+  pStmt->bInfo.tbUid = 0;
+  pStmt->bInfo.tbSuid = 0;
+  pStmt->bInfo.tbType = 0;
+  pStmt->bInfo.needParse = true;
+
+  taosMemoryFreeClear(pStmt->bInfo.tbName);
+  destroyBoundColumnInfo(pStmt->bInfo.boundTags);
+  taosMemoryFreeClear(pStmt->bInfo.boundTags);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtCleanExecInfo(STscStmt* pStmt, bool keepTable) {
+  taos_free_result(pStmt->exec.pRequest);
+  pStmt->exec.pRequest = NULL;
+
+  void *pIter = taosHashIterate(pStmt->exec.pBlockHash, NULL);
+  while (pIter) {
+    STableDataBlocks* pBlocks = *(STableDataBlocks**)pIter;    
+    uint64_t *key = taosHashGetKey(pIter, NULL);
+    
+    if (keepTable && (*key == pStmt->bInfo.tbUid)) {
+      STMT_ERR_RET(qResetStmtDataBlock(pBlocks, true));
+      
+      pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
+      continue;
+    }
+
+    qFreeStmtDataBlock(pBlocks);
+    taosHashRemove(pStmt->exec.pBlockHash, key, sizeof(*key));
+
+    pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
+  }
+
+  if (keepTable) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  taosHashCleanup(pStmt->exec.pBlockHash);
+  pStmt->exec.pBlockHash = NULL;
+
+  STMT_ERR_RET(stmtCleanBindInfo(pStmt));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtCleanSQLInfo(STscStmt* pStmt) {
+  taosMemoryFree(pStmt->sql.sqlStr);
+  qDestroyQuery(pStmt->sql.pQuery);
+
+  void *pIter = taosHashIterate(pStmt->sql.pTableCache, NULL);
+  while (pIter) {
+    SStmtTableCache* pCache = (SStmtTableCache*)pIter;    
+
+    qDestroyStmtDataBlock(pCache->pDataBlock);
+    destroyBoundColumnInfo(pCache->boundTags);
+    
+    pIter = taosHashIterate(pStmt->sql.pTableCache, pIter);
+  }
+  taosHashCleanup(pStmt->sql.pTableCache);
+  pStmt->sql.pTableCache = NULL;
+
+  memset(&pStmt->sql, 0, sizeof(pStmt->sql));
+
+  STMT_ERR_RET(stmtCleanExecInfo(pStmt, false));
+  STMT_ERR_RET(stmtCleanBindInfo(pStmt));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtGetFromCache(STscStmt* pStmt) {
+  pStmt->bInfo.needParse = true;
+
+  if (NULL == pStmt->sql.pTableCache || taosHashGetSize(pStmt->sql.pTableCache) <= 0) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (NULL == pStmt->pCatalog) {
+    STMT_ERR_RET(catalogGetHandle(pStmt->taos->pAppInfo->clusterId, &pStmt->pCatalog));
+  }
+
+  STableMeta *pTableMeta = NULL;
+  SEpSet ep = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp);
+  STMT_ERR_RET(catalogGetTableMeta(pStmt->pCatalog, pStmt->taos->pAppInfo->pTransporter, &ep, &pStmt->bInfo.sname, &pTableMeta));
+
+  if (pTableMeta->uid == pStmt->bInfo.tbUid) {
+    pStmt->bInfo.needParse = false;
+    
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (taosHashGet(pStmt->exec.pBlockHash, &pTableMeta->uid, sizeof(pTableMeta->uid))) {
+    SStmtTableCache* pCache = taosHashGet(pStmt->sql.pTableCache, &pTableMeta->uid, sizeof(pTableMeta->uid));
+    if (NULL == pCache) {
+      tscError("table uid %" PRIx64 "found in exec blockHash, but not in sql blockHash", pTableMeta->uid);
+      STMT_ERR_RET(TSDB_CODE_TSC_APP_ERROR);
+    }
+    
+    pStmt->bInfo.needParse = false;
+    
+    pStmt->bInfo.tbUid = pTableMeta->uid;
+    pStmt->bInfo.tbSuid = pTableMeta->suid;
+    pStmt->bInfo.tbType = pTableMeta->tableType;
+    pStmt->bInfo.boundTags = pCache->boundTags;
+    
+    return TSDB_CODE_SUCCESS;
+  }
+
+  SStmtTableCache* pCache = taosHashGet(pStmt->sql.pTableCache, &pTableMeta->uid, sizeof(pTableMeta->uid));
+  if (pCache) {
+    pStmt->bInfo.needParse = false;
+
+    pStmt->bInfo.tbUid = pTableMeta->uid;
+    pStmt->bInfo.tbSuid = pTableMeta->suid;
+    pStmt->bInfo.tbType = pTableMeta->tableType;
+    pStmt->bInfo.boundTags = pCache->boundTags;
+
+    STableDataBlocks* pNewBlock = NULL;
+    STMT_ERR_RET(qRebuildStmtDataBlock(&pNewBlock, pCache->pDataBlock));
+
+    if (taosHashPut(pStmt->exec.pBlockHash, &pStmt->bInfo.tbUid, sizeof(pStmt->bInfo.tbUid), &pNewBlock, POINTER_BYTES)) {
+      STMT_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+    
+    return TSDB_CODE_SUCCESS;
+  }
+
+  STMT_ERR_RET(stmtCleanBindInfo(pStmt));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtResetStmt(STscStmt* pStmt) {
+  STMT_ERR_RET(stmtCleanSQLInfo(pStmt));
+
+  pStmt->sql.pTableCache = taosHashInit(100, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
+  if (NULL == pStmt->sql.pTableCache) {
+    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    STMT_ERR_RET(terrno);
+  }
+
+  pStmt->sql.status = STMT_INIT;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 TAOS_STMT *stmtInit(TAOS *taos) {
   STscObj* pObj = (STscObj*)taos;
   STscStmt* pStmt = NULL;
 
-#if 0
   pStmt = taosMemoryCalloc(1, sizeof(STscStmt));
-  if (pStmt == NULL) {
+  if (NULL == pStmt) {
     terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
-    tscError("failed to allocate memory for statement");
     return NULL;
   }
+
+  pStmt->sql.pTableCache = taosHashInit(100, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
+  if (NULL == pStmt->sql.pTableCache) {
+    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    taosMemoryFree(pStmt);
+    return NULL;
+  }
+
   pStmt->taos = pObj;
-
-  SSqlObj* pSql = calloc(1, sizeof(SSqlObj));
-
-  if (pSql == NULL) {
-    free(pStmt);
-    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
-    tscError("failed to allocate memory for statement");
-    return NULL;
-  }
-
-  if (TSDB_CODE_SUCCESS != tscAllocPayload(&pSql->cmd, TSDB_DEFAULT_PAYLOAD_SIZE)) {
-    free(pSql);
-    free(pStmt);
-    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
-    tscError("failed to malloc payload buffer");
-    return NULL;
-  }
-
-  tsem_init(&pSql->rspSem, 0, 0);
-  pSql->signature   = pSql;
-  pSql->pTscObj     = pObj;
-  pSql->maxRetry    = TSDB_MAX_REPLICA;
-  pStmt->pSql       = pSql;
-  pStmt->last       = STMT_INIT;
-  pStmt->numOfRows  = 0;
-  registerSqlObj(pSql);
-#endif
-
+  pStmt->bInfo.needParse = true;
+  pStmt->sql.status = STMT_INIT;
+  
   return pStmt;
 }
 
-int stmtClose(TAOS_STMT *stmt) {
+int stmtPrepare(TAOS_STMT *stmt, const char *sql, unsigned long length) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  if (pStmt->sql.status >= STMT_PREPARE) {
+    STMT_ERR_RET(stmtResetStmt(pStmt));
+  }
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_PREPARE));
+
+  if (length <= 0) {
+    length = strlen(sql);
+  }
+  
+  pStmt->sql.sqlStr = strndup(sql, length);
+  pStmt->sql.sqlLen = length;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int stmtSetTbName(TAOS_STMT *stmt, const char *tbName) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_SETTBNAME));
+
+  if (NULL == pStmt->exec.pRequest) {
+    STMT_ERR_RET(buildRequest(pStmt->taos, pStmt->sql.sqlStr, pStmt->sql.sqlLen, &pStmt->exec.pRequest));
+  }
+  
+  STMT_ERR_RET(qCreateSName(&pStmt->bInfo.sname, tbName, pStmt->taos->acctId, pStmt->exec.pRequest->pDb, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen));
+    
+  STMT_ERR_RET(stmtGetFromCache(pStmt));
+
+  if (pStmt->bInfo.needParse) {
+    taosMemoryFree(pStmt->bInfo.tbName);
+    pStmt->bInfo.tbName = strdup(tbName);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int stmtSetTbTags(TAOS_STMT *stmt, TAOS_BIND_v2 *tags) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_SETTAGS));
+
+  if (pStmt->bInfo.needParse) {
+    STMT_ERR_RET(stmtParseSql(pStmt));
+  }
+
+  STableDataBlocks **pDataBlock = (STableDataBlocks**)taosHashGet(pStmt->exec.pBlockHash, (const char*)&pStmt->bInfo.tbUid, sizeof(pStmt->bInfo.tbUid));
+  if (NULL == pDataBlock) {
+    tscError("table uid %" PRIx64 "not found in exec blockHash", pStmt->bInfo.tbUid);
+    STMT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  }
+  
+  STMT_ERR_RET(qBindStmtTagsValue(*pDataBlock, pStmt->bInfo.boundTags, pStmt->bInfo.tbSuid, &pStmt->bInfo.sname, tags, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t stmtFetchTagFields(TAOS_STMT *stmt, int32_t *fieldNum, TAOS_FIELD** fields) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_FETCH_TAG_FIELDS));
+
+  if (pStmt->bInfo.needParse) {
+    STMT_ERR_RET(stmtParseSql(pStmt));
+  }
+
+  if (STMT_TYPE_QUERY == pStmt->sql.type) {
+    tscError("invalid operation to get query tag fileds");
+    STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
+  }
+
+  STableDataBlocks **pDataBlock = (STableDataBlocks**)taosHashGet(pStmt->exec.pBlockHash, (const char*)&pStmt->bInfo.tbUid, sizeof(pStmt->bInfo.tbUid));
+  if (NULL == pDataBlock) {
+    tscError("table uid %" PRIx64 "not found in exec blockHash", pStmt->bInfo.tbUid);
+    STMT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  }
+
+  STMT_ERR_RET(qBuildStmtTagFields(*pDataBlock, pStmt->bInfo.boundTags, fieldNum, fields));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t stmtFetchColFields(TAOS_STMT *stmt, int32_t *fieldNum, TAOS_FIELD** fields) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_FETCH_COL_FIELDS));
+
+  if (pStmt->bInfo.needParse) {
+    STMT_ERR_RET(stmtParseSql(pStmt));
+  }
+
+  if (STMT_TYPE_QUERY == pStmt->sql.type) {
+    tscError("invalid operation to get query column fileds");
+    STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
+  }
+
+  STableDataBlocks **pDataBlock = (STableDataBlocks**)taosHashGet(pStmt->exec.pBlockHash, (const char*)&pStmt->bInfo.tbUid, sizeof(pStmt->bInfo.tbUid));
+  if (NULL == pDataBlock) {
+    tscError("table uid %" PRIx64 "not found in exec blockHash", pStmt->bInfo.tbUid);
+    STMT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  }
+
+  STMT_ERR_RET(qBuildStmtColFields(*pDataBlock, fieldNum, fields));
+
+  return TSDB_CODE_SUCCESS;  
+}
+
+int stmtBindBatch(TAOS_STMT *stmt, TAOS_BIND_v2 *bind, int32_t colIdx) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_BIND));
+
+  if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 && STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
+    pStmt->bInfo.needParse = false;
+  }
+
+  if (NULL == pStmt->exec.pRequest) {
+    STMT_ERR_RET(buildRequest(pStmt->taos, pStmt->sql.sqlStr, pStmt->sql.sqlLen, &pStmt->exec.pRequest));
+  }
+
+  if (pStmt->bInfo.needParse) {
+    STMT_ERR_RET(stmtParseSql(pStmt));
+  }
+
+  STableDataBlocks **pDataBlock = (STableDataBlocks**)taosHashGet(pStmt->exec.pBlockHash, (const char*)&pStmt->bInfo.tbUid, sizeof(pStmt->bInfo.tbUid));
+  if (NULL == pDataBlock) {
+    tscError("table uid %" PRIx64 "not found in exec blockHash", pStmt->bInfo.tbUid);
+    STMT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  }
+
+  if (colIdx < 0) {
+    qBindStmtColsValue(*pDataBlock, bind, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen);
+  } else {
+    if (colIdx != (pStmt->bInfo.sBindLastIdx + 1) && colIdx != 0) {
+      tscError("bind column index not in sequence");
+      STMT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+    }
+
+    pStmt->bInfo.sBindLastIdx = colIdx;
+    
+    if (0 == colIdx) {
+      pStmt->bInfo.sBindRowNum = bind->num;
+    }
+    
+    qBindStmtSingleColValue(*pDataBlock, bind, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen, colIdx, pStmt->bInfo.sBindRowNum);
+  }
+  
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int stmtAddBatch(TAOS_STMT *stmt) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_ADD_BATCH));
+
+  STMT_ERR_RET(stmtCacheBlock(pStmt));
+  
   return TSDB_CODE_SUCCESS;
 }
 
 int stmtExec(TAOS_STMT *stmt) {
-  return TSDB_CODE_SUCCESS;
+  STscStmt* pStmt = (STscStmt*)stmt;
+  int32_t code = 0;
+
+  STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_EXECUTE));
+
+  STMT_ERR_RET(qBuildStmtOutput(pStmt->sql.pQuery, pStmt->exec.pVgHash, pStmt->exec.pBlockHash));
+
+  launchQueryImpl(pStmt->exec.pRequest, pStmt->sql.pQuery, TSDB_CODE_SUCCESS, true);
+
+  STMT_ERR_JRET(pStmt->exec.pRequest->code);
+
+  pStmt->affectedRows += taos_affected_rows(pStmt->exec.pRequest);
+
+_return:
+
+  stmtCleanExecInfo(pStmt, (code ? false : true));
+  
+  ++pStmt->sql.runTimes;
+  
+  STMT_RET(code);
 }
 
-char *stmtErrstr(TAOS_STMT *stmt) {
-  return NULL;
+
+int stmtClose(TAOS_STMT *stmt) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  STMT_RET(stmtCleanSQLInfo(pStmt));
+}
+
+const char *stmtErrstr(TAOS_STMT *stmt) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  if (stmt == NULL) {
+    return (char*) tstrerror(terrno);
+  }
+
+  if (pStmt->exec.pRequest) {
+    pStmt->exec.pRequest->code = terrno;
+  }
+
+  return taos_errstr(pStmt->exec.pRequest);
 }
 
 int stmtAffectedRows(TAOS_STMT *stmt) {
-  return TSDB_CODE_SUCCESS;
-}
-
-int stmtBind(TAOS_STMT *stmt, TAOS_BIND *bind) {
-  return TSDB_CODE_SUCCESS;
-}
-
-int stmtPrepare(TAOS_STMT *stmt, const char *sql, unsigned long length) {
-  return TSDB_CODE_SUCCESS;
-}
-
-int stmtSetTbNameTags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags) {
-  return TSDB_CODE_SUCCESS;
+  return ((STscStmt*)stmt)->affectedRows;
 }
 
 int stmtIsInsert(TAOS_STMT *stmt, int *insert) {
+  STscStmt* pStmt = (STscStmt*)stmt;
+
+  if (pStmt->sql.type) {
+    *insert = (STMT_TYPE_INSERT == pStmt->sql.type || STMT_TYPE_MULTI_INSERT == pStmt->sql.type);
+  } else {
+    *insert = isInsertSql(pStmt->sql.sqlStr, 0);
+  }
+  
   return TSDB_CODE_SUCCESS;
 }
 
 int stmtGetParamNum(TAOS_STMT *stmt, int *nums) {
-  return TSDB_CODE_SUCCESS;
-}
-
-int stmtAddBatch(TAOS_STMT *stmt) {
+  STMT_ERR_RET(stmtFetchColFields(stmt, nums, NULL));
+  
   return TSDB_CODE_SUCCESS;
 }
 
@@ -91,9 +544,5 @@ TAOS_RES *stmtUseResult(TAOS_STMT *stmt) {
   return NULL;
 }
 
-int stmtBindBatch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind) {
-  return TSDB_CODE_SUCCESS;
-}
-
 
 
diff --git a/source/client/src/tmq.c b/source/client/src/tmq.c
index 90a589c36c..d404edac91 100644
--- a/source/client/src/tmq.c
+++ b/source/client/src/tmq.c
@@ -615,7 +615,7 @@ TAOS_RES* tmq_create_stream(TAOS* taos, const char* streamName, const char* tbNa
 
   int32_t code = 0;
   CHECK_CODE_GOTO(buildRequest(pTscObj, sql, sqlLen, &pRequest), _return);
-  CHECK_CODE_GOTO(parseSql(pRequest, false, &pQueryNode), _return);
+  CHECK_CODE_GOTO(parseSql(pRequest, false, &pQueryNode, NULL), _return);
 
   // todo check for invalid sql statement and return with error code
 
diff --git a/source/common/src/trow.c b/source/common/src/trow.c
index ba05d732c3..c73f26e6da 100644
--- a/source/common/src/trow.c
+++ b/source/common/src/trow.c
@@ -519,8 +519,9 @@ static int32_t tdAppendKvRowToDataCol(STSRow *pRow, STSchema *pSchema, SDataCols
     SKvRowIdx *pIdx = tdKvRowColIdxAt(pRow, rcol);
     int16_t    colIdx = -1;
     if (pIdx) {
-      colIdx = POINTER_DISTANCE(pRow->data, pIdx) / sizeof(SKvRowIdx);
+      colIdx = POINTER_DISTANCE(pIdx, TD_ROW_COL_IDX(pRow)) / sizeof(SKvRowIdx);
     }
+    TASSERT(colIdx >= 0);
     SCellVal sVal = {0};
     if (pIdx->colId == pDataCol->colId) {
       if (tdGetKvRowValOfCol(&sVal, pRow, pBitmap, pIdx->offset, colIdx) < 0) {
diff --git a/source/libs/parser/inc/parInsertData.h b/source/libs/parser/inc/parInsertData.h
index cf87f57d4f..ed7267655c 100644
--- a/source/libs/parser/inc/parInsertData.h
+++ b/source/libs/parser/inc/parInsertData.h
@@ -89,7 +89,7 @@ static FORCE_INLINE int32_t getExtendedRowSize(STableDataBlocks *pBlock) {
          (int32_t)TD_BITMAP_BYTES(pTableInfo->numOfColumns - 1);
 }
 
-static FORCE_INLINE void getSTSRowAppendInfo(SSchema *pSchema, uint8_t rowType, SParsedDataColInfo *spd, col_id_t idx,
+static FORCE_INLINE void getSTSRowAppendInfo(uint8_t rowType, SParsedDataColInfo *spd, col_id_t idx,
                                              int32_t *toffset, col_id_t *colIdx) {
   col_id_t schemaIdx = 0;
   if (IS_DATA_COL_ORDERED(spd)) {
@@ -131,7 +131,6 @@ static FORCE_INLINE int32_t setBlockInfo(SSubmitBlk *pBlocks, STableDataBlocks*
 int32_t schemaIdxCompar(const void *lhs, const void *rhs);
 int32_t boundIdxCompar(const void *lhs, const void *rhs);
 void    setBoundColumnInfo(SParsedDataColInfo *pColList, SSchema *pSchema, col_id_t numOfCols);
-void destroyBoundColumnInfo(SParsedDataColInfo* pColList);
 void destroyBlockArrayList(SArray* pDataBlockList);
 void destroyBlockHashmap(SHashObj* pDataBlockHash);
 int  initRowBuilder(SRowBuilder *pBuilder, int16_t schemaVer, SParsedDataColInfo *pColInfo);
@@ -139,5 +138,7 @@ int32_t allocateMemIfNeed(STableDataBlocks *pDataBlock, int32_t rowSize, int32_t
 int32_t getDataBlockFromList(SHashObj* pHashList, int64_t id, int32_t size, int32_t startOffset, int32_t rowSize,
     const STableMeta* pTableMeta, STableDataBlocks** dataBlocks, SArray* pBlockList, SVCreateTbReq* pCreateTbReq);
 int32_t mergeTableDataBlocks(SHashObj* pHashObj, uint8_t payloadType, SArray** pVgDataBlocks);
+int32_t buildCreateTbMsg(STableDataBlocks* pBlocks, SVCreateTbReq* pCreateTbReq);
+int32_t allocateMemForSize(STableDataBlocks *pDataBlock, int32_t allSize);
 
 #endif  // TDENGINE_DATABLOCKMGT_H
diff --git a/source/libs/parser/inc/parInt.h b/source/libs/parser/inc/parInt.h
index ea01caf9d7..87348e292e 100644
--- a/source/libs/parser/inc/parInt.h
+++ b/source/libs/parser/inc/parInt.h
@@ -21,6 +21,8 @@ extern "C" {
 #endif
 
 #include "parser.h"
+#include "parToken.h"
+#include "parUtil.h"
 
 int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery);
 int32_t parse(SParseContext* pParseCxt, SQuery** pQuery);
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index 22c4908629..f21a738032 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -40,29 +40,21 @@
     sToken = tStrGetToken(pSql, &index, false);  \
   } while (0)
 
-#define CHECK_CODE(expr)             \
-  do {                               \
-    int32_t code = expr;             \
-    if (TSDB_CODE_SUCCESS != code) { \
-      return code;                   \
-    }                                \
-  } while (0)
-
 typedef struct SInsertParseContext {
-  SParseContext*     pComCxt;             // input
-  char*              pSql;                // input
-  SMsgBuf            msg;                 // input
-  STableMeta*        pTableMeta;          // each table
-  SParsedDataColInfo tags;                // each table
-  SKVRowBuilder      tagsBuilder;         // each table
-  SVCreateTbReq      createTblReq;        // each table
-  SHashObj*          pVgroupsHashObj;     // global
-  SHashObj*          pTableBlockHashObj;  // global
-  SHashObj*          pSubTableHashObj;    // global
-  SArray*            pTableDataBlocks;    // global
-  SArray*            pVgDataBlocks;       // global
-  int32_t            totalNum;
+  SParseContext* pComCxt;       // input
+  char          *pSql;          // input
+  SMsgBuf        msg;           // input
+  STableMeta* pTableMeta;       // each table
+  SParsedDataColInfo tags;      // each table
+  SKVRowBuilder tagsBuilder;    // each table
+  SVCreateTbReq createTblReq;   // each table
+  SHashObj* pVgroupsHashObj;    // global
+  SHashObj* pTableBlockHashObj; // global
+  SHashObj* pSubTableHashObj;   // global
+  SArray* pVgDataBlocks;        // global
+  int32_t totalNum;
   SVnodeModifOpStmt* pOutput;
+  SStmtCallback* pStmtCb;
 } SInsertParseContext;
 
 typedef int32_t (*_row_append_fn_t)(SMsgBuf* pMsgBuf, const void* value, int32_t len, void* param);
@@ -70,6 +62,29 @@ typedef int32_t (*_row_append_fn_t)(SMsgBuf* pMsgBuf, const void* value, int32_t
 static uint8_t TRUE_VALUE = (uint8_t)TSDB_TRUE;
 static uint8_t FALSE_VALUE = (uint8_t)TSDB_FALSE;
 
+typedef struct SKvParam {
+  SKVRowBuilder *builder;
+  SSchema       *schema;
+  char           buf[TSDB_MAX_TAGS_LEN];
+} SKvParam;
+
+typedef struct SMemParam {
+  SRowBuilder* rb;
+  SSchema*     schema;
+  int32_t      toffset;
+  col_id_t     colIdx;
+} SMemParam;
+
+
+#define CHECK_CODE(expr) \
+  do { \
+    int32_t code = expr; \
+    if (TSDB_CODE_SUCCESS != code) { \
+      return code; \
+    } \
+  } while (0)
+
+
 static int32_t skipInsertInto(SInsertParseContext* pCxt) {
   SToken sToken;
   NEXT_TOKEN(pCxt->pSql, sToken);
@@ -163,7 +178,8 @@ static int32_t buildName(SInsertParseContext* pCxt, SToken* pStname, char* fullD
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t createSName(SName* pName, SToken* pTableName, SParseContext* pParseCtx, SMsgBuf* pMsgBuf) {
+
+static int32_t createSName(SName* pName, SToken* pTableName, int32_t acctId, const char* dbName, SMsgBuf* pMsgBuf) {
   const char* msg1 = "name too long";
   const char* msg2 = "invalid database name";
   const char* msg3 = "db is not specified";
@@ -179,7 +195,7 @@ static int32_t createSName(SName* pName, SToken* pTableName, SParseContext* pPar
     strncpy(name, pTableName->z, dbLen);
     dbLen = strdequote(name);
 
-    code = tNameSetDbName(pName, pParseCtx->acctId, name, dbLen);
+    code = tNameSetDbName(pName, acctId, name, dbLen);
     if (code != TSDB_CODE_SUCCESS) {
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }
@@ -204,11 +220,11 @@ static int32_t createSName(SName* pName, SToken* pTableName, SParseContext* pPar
     strncpy(name, pTableName->z, pTableName->n);
     strdequote(name);
 
-    if (pParseCtx->db == NULL) {
+    if (dbName == NULL) {
       return buildInvalidOperationMsg(pMsgBuf, msg3);
     }
 
-    code = tNameSetDbName(pName, pParseCtx->acctId, pParseCtx->db, strlen(pParseCtx->db));
+    code = tNameSetDbName(pName, acctId, dbName, strlen(dbName));
     if (code != TSDB_CODE_SUCCESS) {
       code = buildInvalidOperationMsg(pMsgBuf, msg2);
       return code;
@@ -225,8 +241,8 @@ static int32_t createSName(SName* pName, SToken* pTableName, SParseContext* pPar
 
 static int32_t getTableMetaImpl(SInsertParseContext* pCxt, SToken* pTname, bool isStb) {
   SParseContext* pBasicCtx = pCxt->pComCxt;
-  SName          name = {0};
-  createSName(&name, pTname, pBasicCtx, &pCxt->msg);
+  SName name = {0};
+  createSName(&name, pTname, pBasicCtx->acctId, pBasicCtx->db, &pCxt->msg);  
   if (isStb) {
     CHECK_CODE(catalogGetSTableMeta(pBasicCtx->pCatalog, pBasicCtx->pTransporter, &pBasicCtx->mgmtEpSet, &name,
                                     &pCxt->pTableMeta));
@@ -299,7 +315,7 @@ static int32_t buildOutput(SInsertParseContext* pCxt) {
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t checkTimestamp(STableDataBlocks* pDataBlocks, const char* start) {
+int32_t checkTimestamp(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;
@@ -441,7 +457,7 @@ static int32_t parseValueToken(char** end, SToken* pToken, SSchema* pSchema, int
 
   if (isNullStr(pToken)) {
     if (TSDB_DATA_TYPE_TIMESTAMP == pSchema->type && PRIMARYKEY_TIMESTAMP_COL_ID == pSchema->colId) {
-      return buildSyntaxErrMsg(pMsgBuf, "primary timestamp can not be null", pToken->z);
+      return buildSyntaxErrMsg(pMsgBuf, "primary timestamp should not be null", pToken->z);
     }
 
     return func(pMsgBuf, NULL, 0, param);
@@ -603,13 +619,6 @@ static int32_t parseValueToken(char** end, SToken* pToken, SSchema* pSchema, int
   return TSDB_CODE_FAILED;
 }
 
-typedef struct SMemParam {
-  SRowBuilder* rb;
-  SSchema*     schema;
-  int32_t      toffset;
-  col_id_t     colIdx;
-} SMemParam;
-
 static FORCE_INLINE int32_t MemRowAppend(SMsgBuf* pMsgBuf, const void* value, int32_t len, void* param) {
   SMemParam*   pa = (SMemParam*)param;
   SRowBuilder* rb = pa->rb;
@@ -718,14 +727,8 @@ static int32_t parseBoundColumns(SInsertParseContext* pCxt, SParsedDataColInfo*
   return TSDB_CODE_SUCCESS;
 }
 
-typedef struct SKvParam {
-  SKVRowBuilder* builder;
-  SSchema*       schema;
-  char           buf[TSDB_MAX_TAGS_LEN];
-} SKvParam;
-
-static int32_t KvRowAppend(SMsgBuf* pMsgBuf, const void* value, int32_t len, void* param) {
-  SKvParam* pa = (SKvParam*)param;
+static int32_t KvRowAppend(SMsgBuf* pMsgBuf, const void *value, int32_t len, void *param) {
+  SKvParam* pa = (SKvParam*) param;
 
   int8_t  type = pa->schema->type;
   int16_t colId = pa->schema->colId;
@@ -760,13 +763,13 @@ static int32_t KvRowAppend(SMsgBuf* pMsgBuf, const void* value, int32_t len, voi
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t buildCreateTbReq(SInsertParseContext* pCxt, const SName* pName, SKVRow row) {
+static int32_t buildCreateTbReq(SVCreateTbReq *pTbReq, const SName* pName, SKVRow row, int64_t suid) {
   char dbFName[TSDB_DB_FNAME_LEN] = {0};
   tNameGetFullDbName(pName, dbFName);
-  pCxt->createTblReq.type = TD_CHILD_TABLE;
-  pCxt->createTblReq.name = strdup(pName->tname);
-  pCxt->createTblReq.ctbCfg.suid = pCxt->pTableMeta->suid;
-  pCxt->createTblReq.ctbCfg.pTag = row;
+  pTbReq->type = TD_CHILD_TABLE;
+  pTbReq->name = strdup(pName->tname);
+  pTbReq->ctbCfg.suid = suid;
+  pTbReq->ctbCfg.pTag = row;
 
   return TSDB_CODE_SUCCESS;
 }
@@ -778,23 +781,42 @@ static int32_t parseTagsClause(SInsertParseContext* pCxt, SSchema* pSchema, uint
   }
 
   SKvParam param = {.builder = &pCxt->tagsBuilder};
-  SToken   sToken;
-  char     tmpTokenBuf[TSDB_MAX_BYTES_PER_ROW] = {0};  // used for deleting Escape character: \\, \', \"
+  SToken sToken;
+  bool isParseBindParam = false;  
+  char tmpTokenBuf[TSDB_MAX_BYTES_PER_ROW] = {0};  // used for deleting Escape character: \\, \', \"
   for (int i = 0; i < pCxt->tags.numOfBound; ++i) {
     NEXT_TOKEN_WITH_PREV(pCxt->pSql, sToken);
-    SSchema* pTagSchema = &pSchema[pCxt->tags.boundColumns[i] - 1];  // colId starts with 1
+
+    if (sToken.type == TK_NK_QUESTION) {
+      isParseBindParam = true;
+      if (NULL == pCxt->pStmtCb) {
+        return buildSyntaxErrMsg(&pCxt->msg, "? only used in stmt", sToken.z);
+      }
+
+      continue;
+    }
+
+    if (isParseBindParam) {
+      return buildInvalidOperationMsg(&pCxt->msg, "no mix usage for ? and tag values");
+    }
+    
+    SSchema* pTagSchema = &pSchema[pCxt->tags.boundColumns[i] - 1]; // colId starts with 1
     param.schema = pTagSchema;
     CHECK_CODE(
         parseValueToken(&pCxt->pSql, &sToken, pTagSchema, precision, tmpTokenBuf, KvRowAppend, &param, &pCxt->msg));
   }
 
+  if (isParseBindParam) {
+    return TSDB_CODE_SUCCESS;
+  }
+
   SKVRow row = tdGetKVRowFromBuilder(&pCxt->tagsBuilder);
   if (NULL == row) {
     return buildInvalidOperationMsg(&pCxt->msg, "tag value expected");
   }
   tdSortKVRowByColIdx(row);
 
-  return buildCreateTbReq(pCxt, pName, row);
+  return buildCreateTbReq(&pCxt->createTblReq, pName, row, pCxt->pTableMeta->suid);
 }
 
 static int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst) {
@@ -818,7 +840,7 @@ static int32_t storeTableMeta(SHashObj* pHash, const char* pName, int32_t len, S
 // pSql -> stb_name [(tag1_name, ...)] TAGS (tag1_value, ...)
 static int32_t parseUsingClause(SInsertParseContext* pCxt, SToken* pTbnameToken) {
   SName name;
-  createSName(&name, pTbnameToken, pCxt->pComCxt, &pCxt->msg);
+  createSName(&name, pTbnameToken, pCxt->pComCxt->acctId, pCxt->pComCxt->db, &pCxt->msg);
   char tbFName[TSDB_TABLE_FNAME_LEN];
   tNameExtractFullName(&name, tbFName);
   int32_t      len = strlen(tbFName);
@@ -863,8 +885,7 @@ static int32_t parseUsingClause(SInsertParseContext* pCxt, SToken* pTbnameToken)
   return TSDB_CODE_SUCCESS;
 }
 
-static int parseOneRow(SInsertParseContext* pCxt, STableDataBlocks* pDataBlocks, int16_t timePrec, int32_t* len,
-                       char* tmpTokenBuf) {
+static int parseOneRow(SInsertParseContext* pCxt, STableDataBlocks* pDataBlocks, int16_t timePrec, bool* gotRow, char* tmpTokenBuf) {
   SParsedDataColInfo* spd = &pDataBlocks->boundColumnInfo;
   SRowBuilder*        pBuilder = &pDataBlocks->rowBuilder;
   STSRow*             row = (STSRow*)(pDataBlocks->pData + pDataBlocks->size);  // skip the SSubmitBlk header
@@ -879,8 +900,22 @@ static int parseOneRow(SInsertParseContext* pCxt, STableDataBlocks* pDataBlocks,
   for (int i = 0; i < spd->numOfBound; ++i) {
     NEXT_TOKEN_WITH_PREV(pCxt->pSql, sToken);
     SSchema* pSchema = &schema[spd->boundColumns[i] - 1];
+
+    if (sToken.type == TK_NK_QUESTION) {
+      isParseBindParam = true;
+      if (NULL == pCxt->pStmtCb) {
+        return buildSyntaxErrMsg(&pCxt->msg, "? only used in stmt", sToken.z);
+      }
+
+      continue;
+    }
+
+    if (isParseBindParam) {
+      return buildInvalidOperationMsg(&pCxt->msg, "no mix usage for ? and values");
+    }
+    
     param.schema = pSchema;
-    getSTSRowAppendInfo(schema, pBuilder->rowType, spd, i, &param.toffset, &param.colIdx);
+    getSTSRowAppendInfo(pBuilder->rowType, spd, i, &param.toffset, &param.colIdx);
     CHECK_CODE(parseValueToken(&pCxt->pSql, &sToken, pSchema, timePrec, tmpTokenBuf, MemRowAppend, &param, &pCxt->msg));
 
     if (PRIMARYKEY_TIMESTAMP_COL_ID == pSchema->colId) {
@@ -899,6 +934,8 @@ static int parseOneRow(SInsertParseContext* pCxt, STableDataBlocks* pDataBlocks,
         }
       }
     }
+
+    *gotRow = true;
   }
 
   // *len = pBuilder->extendedRowSize;
@@ -929,20 +966,24 @@ static int32_t parseValues(SInsertParseContext* pCxt, STableDataBlocks* pDataBlo
       maxRows = tSize;
     }
 
-    int32_t len = 0;
-    CHECK_CODE(parseOneRow(pCxt, pDataBlock, tinfo.precision, &len, tmpTokenBuf));
-    pDataBlock->size += extendedRowSize;  // len;
+    bool gotRow = false;
+    CHECK_CODE(parseOneRow(pCxt, pDataBlock, tinfo.precision, &gotRow, tmpTokenBuf));
+    if (gotRow) {
+      pDataBlock->size += extendedRowSize; //len;
+    }
 
     NEXT_TOKEN(pCxt->pSql, sToken);
     if (TK_NK_RP != sToken.type) {
       return buildSyntaxErrMsg(&pCxt->msg, ") expected", sToken.z);
     }
 
-    (*numOfRows)++;
+    if (gotRow) {
+      (*numOfRows)++;
+    }
   }
 
-  if (0 == (*numOfRows)) {
-    return buildSyntaxErrMsg(&pCxt->msg, "no any data points", NULL);
+  if (0 == (*numOfRows) && (!TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT))) {
+    return  buildSyntaxErrMsg(&pCxt->msg, "no any data points", NULL);
   }
   return TSDB_CODE_SUCCESS;
 }
@@ -964,7 +1005,7 @@ static int32_t parseValuesClause(SInsertParseContext* pCxt, STableDataBlocks* da
   return TSDB_CODE_SUCCESS;
 }
 
-static void destroyCreateSubTbReq(SVCreateTbReq* pReq) {
+void destroyCreateSubTbReq(SVCreateTbReq* pReq) {
   taosMemoryFreeClear(pReq->name);
   taosMemoryFreeClear(pReq->ctbCfg.pTag);
 }
@@ -998,7 +1039,6 @@ static void destroyInsertParseContext(SInsertParseContext* pCxt) {
   taosHashCleanup(pCxt->pVgroupsHashObj);
 
   destroyBlockHashmap(pCxt->pTableBlockHashObj);
-  destroyBlockArrayList(pCxt->pTableDataBlocks);
   destroyBlockArrayList(pCxt->pVgDataBlocks);
 }
 
@@ -1008,23 +1048,41 @@ static void destroyInsertParseContext(SInsertParseContext* pCxt) {
 //       VALUES (field1_value, ...) [(field1_value2, ...) ...] | FILE csv_file_path
 //   [...];
 static int32_t parseInsertBody(SInsertParseContext* pCxt) {
+  int32_t tbNum = 0;
+  
   // for each table
   while (1) {
-    destroyInsertParseContextForTable(pCxt);
-
     SToken sToken;
+    char *tbName = NULL;
+
     // pSql -> tb_name ...
     NEXT_TOKEN(pCxt->pSql, sToken);
 
     // no data in the sql string anymore.
     if (sToken.n == 0) {
-      if (0 == pCxt->totalNum) {
+      if (0 == pCxt->totalNum && (!TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT))) {
         return buildInvalidOperationMsg(&pCxt->msg, "no data in sql");
-        ;
       }
       break;
     }
 
+    if (TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT) && tbNum > 0) {
+      return buildInvalidOperationMsg(&pCxt->msg, "single table allowed in one stmt");;
+    }
+
+    destroyInsertParseContextForTable(pCxt);
+
+    if (TK_NK_QUESTION == sToken.type) {
+      if (pCxt->pStmtCb) {
+        CHECK_CODE((*pCxt->pStmtCb->getTbNameFn)(pCxt->pStmtCb->pStmt, &tbName));
+        
+        sToken.z = tbName;
+        sToken.n = strlen(tbName);
+      } else {
+        return buildSyntaxErrMsg(&pCxt->msg, "? only used in stmt", sToken.z);
+      }
+    }
+    
     SToken tbnameToken = sToken;
     NEXT_TOKEN(pCxt->pSql, sToken);
 
@@ -1050,7 +1108,9 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
     if (TK_VALUES == sToken.type) {
       // pSql -> (field1_value, ...) [(field1_value2, ...) ...]
       CHECK_CODE(parseValuesClause(pCxt, dataBuf));
-      pCxt->pOutput->insertType = TSDB_QUERY_TYPE_INSERT;
+      TSDB_QUERY_SET_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_INSERT);
+
+      tbNum++;
       continue;
     }
 
@@ -1063,14 +1123,32 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
       }
       // todo
       pCxt->pOutput->insertType = TSDB_QUERY_TYPE_FILE_INSERT;
+
+      tbNum++;
       continue;
     }
 
     return buildSyntaxErrMsg(&pCxt->msg, "keyword VALUES or FILE is expected", sToken.z);
   }
+  
+  if (TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT)) {
+    SParsedDataColInfo *tags = taosMemoryMalloc(sizeof(pCxt->tags));
+    if (NULL == tags) {
+      return TSDB_CODE_TSC_OUT_OF_MEMORY;
+    }
+    memcpy(tags, &pCxt->tags, sizeof(pCxt->tags));
+    (*pCxt->pStmtCb->setBindInfoFn)(pCxt->pStmtCb->pStmt, pCxt->pTableMeta, tags);
+    memset(&pCxt->tags, 0, sizeof(pCxt->tags));
+
+    (*pCxt->pStmtCb->setExecInfoFn)(pCxt->pStmtCb->pStmt, pCxt->pVgroupsHashObj, pCxt->pTableBlockHashObj);
+    pCxt->pVgroupsHashObj = NULL;
+    pCxt->pTableBlockHashObj = NULL;
+    
+    return TSDB_CODE_SUCCESS;
+  }
+  
   // merge according to vgId
-  if (!TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT) &&
-      taosHashGetSize(pCxt->pTableBlockHashObj) > 0) {
+  if (taosHashGetSize(pCxt->pTableBlockHashObj) > 0) {
     CHECK_CODE(mergeTableDataBlocks(pCxt->pTableBlockHashObj, pCxt->pOutput->payloadType, &pCxt->pVgDataBlocks));
   }
   return buildOutput(pCxt);
@@ -1084,29 +1162,43 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
 //   [...];
 int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery) {
   SInsertParseContext context = {
-      .pComCxt = pContext,
-      .pSql = (char*)pContext->pSql,
-      .msg = {.buf = pContext->pMsg, .len = pContext->msgLen},
-      .pTableMeta = NULL,
-      .pVgroupsHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, false),
-      .pTableBlockHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false),
-      .pSubTableHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_VARCHAR), true, false),
-      .totalNum = 0,
-      .pOutput = (SVnodeModifOpStmt*)nodesMakeNode(QUERY_NODE_VNODE_MODIF_STMT)};
+    .pComCxt = pContext,
+    .pSql = (char*) pContext->pSql,
+    .msg = {.buf = pContext->pMsg, .len = pContext->msgLen},
+    .pTableMeta = NULL,
+    .pSubTableHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_VARCHAR), true, false),
+    .totalNum = 0,
+    .pOutput = (SVnodeModifOpStmt*)nodesMakeNode(QUERY_NODE_VNODE_MODIF_STMT),
+    .pStmtCb = pContext->pStmtCb
+  };
 
-  if (NULL == context.pVgroupsHashObj || NULL == context.pTableBlockHashObj || NULL == context.pSubTableHashObj ||
-      NULL == context.pOutput) {
+  if (pContext->pStmtCb && *pQuery) {
+    (*pContext->pStmtCb->getExecInfoFn)(pContext->pStmtCb->pStmt, &context.pVgroupsHashObj, &context.pTableBlockHashObj);
+  } else {
+    context.pVgroupsHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, false);
+    context.pTableBlockHashObj = taosHashInit(128, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
+  }
+  
+  if (NULL == context.pVgroupsHashObj || NULL == context.pTableBlockHashObj ||
+      NULL == context.pSubTableHashObj || NULL == context.pOutput) {
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }
 
-  *pQuery = taosMemoryCalloc(1, sizeof(SQuery));
-  if (NULL == *pQuery) {
-    return TSDB_CODE_OUT_OF_MEMORY;
+  if (pContext->pStmtCb) {
+    TSDB_QUERY_SET_TYPE(context.pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT);
   }
-  (*pQuery)->execMode = QUERY_EXEC_MODE_SCHEDULE;
-  (*pQuery)->haveResultSet = false;
-  (*pQuery)->msgType = TDMT_VND_SUBMIT;
-  (*pQuery)->pRoot = (SNode*)context.pOutput;
+
+  if (NULL == *pQuery) {
+    *pQuery = taosMemoryCalloc(1, sizeof(SQuery));
+    if (NULL == *pQuery) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    (*pQuery)->execMode = QUERY_EXEC_MODE_SCHEDULE;
+    (*pQuery)->haveResultSet = false;
+    (*pQuery)->msgType = TDMT_VND_SUBMIT;
+    (*pQuery)->pRoot = (SNode*)context.pOutput;
+  }
+  
   context.pOutput->payloadType = PAYLOAD_TYPE_KV;
 
   int32_t code = skipInsertInto(&context);
@@ -1116,3 +1208,318 @@ int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery) {
   destroyInsertParseContext(&context);
   return code;
 }
+
+
+int32_t qCreateSName(SName* pName, const char* pTableName, int32_t acctId, char* dbName, char *msgBuf, int32_t msgBufLen) {
+  SMsgBuf msg = {.buf = msgBuf, .len =msgBufLen};
+  SToken sToken;
+  int32_t code = 0;
+  char *tbName = NULL;
+  
+  NEXT_TOKEN(pTableName, sToken);
+  
+  if (sToken.n == 0) {
+    return buildInvalidOperationMsg(&msg, "empty table name");
+  }
+
+  code = createSName(pName, &sToken, acctId, dbName, &msg);
+  if (code) {
+    return code;
+  }
+
+  NEXT_TOKEN(pTableName, sToken);
+
+  if (sToken.n > 0) {
+    return buildInvalidOperationMsg(&msg, "table name format is wrong");
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t qBuildStmtOutput(SQuery* pQuery, SHashObj* pVgHash, SHashObj* pBlockHash) {
+  SVnodeModifOpStmt *modifyNode = (SVnodeModifOpStmt *)pQuery->pRoot;
+  int32_t code = 0;
+  SInsertParseContext insertCtx = {
+    .pVgroupsHashObj = pVgHash,
+    .pTableBlockHashObj = pBlockHash,
+    .pOutput = (SVnodeModifOpStmt*)pQuery->pRoot,
+  };
+  
+  // merge according to vgId
+  if (taosHashGetSize(insertCtx.pTableBlockHashObj) > 0) {
+    CHECK_CODE(mergeTableDataBlocks(insertCtx.pTableBlockHashObj, modifyNode->payloadType, &insertCtx.pVgDataBlocks));
+  }
+
+  CHECK_CODE(buildOutput(&insertCtx));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t qBindStmtTagsValue(void *pBlock, void *boundTags, int64_t suid, SName *pName, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen){
+  STableDataBlocks *pDataBlock = (STableDataBlocks *)pBlock;
+  SMsgBuf pBuf = {.buf = msgBuf, .len = msgBufLen}; 
+  SParsedDataColInfo* tags = (SParsedDataColInfo*)boundTags;
+  if (NULL == tags) {
+    return TSDB_CODE_QRY_APP_ERROR;
+  }
+
+  SKVRowBuilder tagBuilder;
+  if (tdInitKVRowBuilder(&tagBuilder) < 0) {
+    return TSDB_CODE_TSC_OUT_OF_MEMORY;
+  }
+
+  SSchema* pSchema = getTableTagSchema(pDataBlock->pTableMeta);
+  SKvParam param = {.builder = &tagBuilder};
+
+  for (int c = 0; c < tags->numOfBound; ++c) {
+    if (bind[c].is_null && bind[c].is_null[0]) {
+      KvRowAppend(&pBuf, NULL, 0, &param);
+      continue;
+    }
+    
+    SSchema* pTagSchema = &pSchema[tags->boundColumns[c] - 1]; // colId starts with 1
+    param.schema = pTagSchema;
+
+    int32_t colLen = pTagSchema->bytes;
+    if (IS_VAR_DATA_TYPE(pTagSchema->type)) {
+      colLen = bind[c].length[0];
+    }
+    
+    CHECK_CODE(KvRowAppend(&pBuf, (char *)bind[c].buffer, colLen, &param));
+  }
+
+  SKVRow row = tdGetKVRowFromBuilder(&tagBuilder);
+  if (NULL == row) {
+    tdDestroyKVRowBuilder(&tagBuilder);
+    return buildInvalidOperationMsg(&pBuf, "tag value expected");
+  }
+  tdSortKVRowByColIdx(row);
+
+  SVCreateTbReq tbReq = {0};
+  CHECK_CODE(buildCreateTbReq(&tbReq, pName, row, suid));
+  CHECK_CODE(buildCreateTbMsg(pDataBlock, &tbReq));
+
+  destroyCreateSubTbReq(&tbReq);
+  tdDestroyKVRowBuilder(&tagBuilder);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t qBindStmtColsValue(void *pBlock, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen) {
+  STableDataBlocks *pDataBlock = (STableDataBlocks *)pBlock;
+  SSchema* pSchema = getTableColumnSchema(pDataBlock->pTableMeta);
+  int32_t extendedRowSize = getExtendedRowSize(pDataBlock);
+  SParsedDataColInfo* spd = &pDataBlock->boundColumnInfo;
+  SRowBuilder*        pBuilder = &pDataBlock->rowBuilder;
+  SMemParam param = {.rb = pBuilder};
+  SMsgBuf pBuf = {.buf = msgBuf, .len = msgBufLen}; 
+  int32_t rowNum = bind->num;
+  
+  CHECK_CODE(initRowBuilder(&pDataBlock->rowBuilder, pDataBlock->pTableMeta->sversion, &pDataBlock->boundColumnInfo));
+
+  CHECK_CODE(allocateMemForSize(pDataBlock, extendedRowSize * bind->num));
+  
+  for (int32_t r = 0; r < bind->num; ++r) {
+    STSRow* row = (STSRow*)(pDataBlock->pData + pDataBlock->size);  // skip the SSubmitBlk header
+    tdSRowResetBuf(pBuilder, row);
+    
+    // 1. set the parsed value from sql string
+    for (int c = 0; c < spd->numOfBound; ++c) {
+      SSchema* pColSchema = &pSchema[spd->boundColumns[c] - 1];
+
+      if (bind[c].buffer_type != pColSchema->type) {
+        return buildInvalidOperationMsg(&pBuf, "column type mis-match with buffer type");
+      }
+
+      if (bind[c].num != rowNum) {
+        return buildInvalidOperationMsg(&pBuf, "row number in each bind param should be the same");
+      }
+      
+      param.schema = pColSchema;
+      getSTSRowAppendInfo(pBuilder->rowType, spd, c, &param.toffset, &param.colIdx);
+
+      if (bind[c].is_null && bind[c].is_null[r]) {
+        if (pColSchema->colId == PRIMARYKEY_TIMESTAMP_COL_ID) {
+          return buildInvalidOperationMsg(&pBuf, "primary timestamp should not be NULL");
+        }
+        
+        CHECK_CODE(MemRowAppend(&pBuf, NULL, 0, &param));
+      } else {
+        int32_t colLen = pColSchema->bytes;
+        if (IS_VAR_DATA_TYPE(pColSchema->type)) {
+          colLen = bind[c].length[r];
+        }
+        
+        CHECK_CODE(MemRowAppend(&pBuf, (char *)bind[c].buffer + bind[c].buffer_length * r, colLen, &param));
+      }
+    
+      if (PRIMARYKEY_TIMESTAMP_COL_ID == pColSchema->colId) {
+        TSKEY tsKey = TD_ROW_KEY(row);
+        checkTimestamp(pDataBlock, (const char *)&tsKey);
+      }
+    }
+    
+    // set the null value for the columns that do not assign values
+    if ((spd->numOfBound < spd->numOfCols) && TD_IS_TP_ROW(row)) {
+      for (int32_t i = 0; i < spd->numOfCols; ++i) {
+        if (spd->cols[i].valStat == VAL_STAT_NONE) {  // the primary TS key is not VAL_STAT_NONE
+          tdAppendColValToTpRow(pBuilder, TD_VTYPE_NONE, getNullValue(pSchema[i].type), true, pSchema[i].type, i,
+                                spd->cols[i].toffset);
+        }
+      }
+    }
+    
+    pDataBlock->size += extendedRowSize;
+  }
+
+  SSubmitBlk *pBlocks = (SSubmitBlk *)(pDataBlock->pData);
+  if (TSDB_CODE_SUCCESS != setBlockInfo(pBlocks, pDataBlock, bind->num)) {
+    return buildInvalidOperationMsg(&pBuf, "too many rows in sql, total number of rows should be less than 32767");
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t qBindStmtSingleColValue(void *pBlock, TAOS_BIND_v2 *bind, char *msgBuf, int32_t msgBufLen, int32_t colIdx, int32_t rowNum) {
+  STableDataBlocks *pDataBlock = (STableDataBlocks *)pBlock;
+  SSchema* pSchema = getTableColumnSchema(pDataBlock->pTableMeta);
+  int32_t extendedRowSize = getExtendedRowSize(pDataBlock);
+  SParsedDataColInfo* spd = &pDataBlock->boundColumnInfo;
+  SRowBuilder*        pBuilder = &pDataBlock->rowBuilder;
+  SMemParam param = {.rb = pBuilder};
+  SMsgBuf pBuf = {.buf = msgBuf, .len = msgBufLen}; 
+  bool rowStart = (0 == colIdx);
+  bool rowEnd = ((colIdx + 1) == spd->numOfBound);
+
+  if (rowStart) {
+    CHECK_CODE(initRowBuilder(&pDataBlock->rowBuilder, pDataBlock->pTableMeta->sversion, &pDataBlock->boundColumnInfo));
+    CHECK_CODE(allocateMemForSize(pDataBlock, extendedRowSize * bind->num));
+  }
+  
+  for (int32_t r = 0; r < bind->num; ++r) {
+    STSRow* row = (STSRow*)(pDataBlock->pData + pDataBlock->size + extendedRowSize * r);  // skip the SSubmitBlk header
+    if (rowStart) {
+      tdSRowResetBuf(pBuilder, row);
+    } else {
+      tdSRowGetBuf(pBuilder, row);
+    }
+    
+    SSchema* pColSchema = &pSchema[spd->boundColumns[colIdx] - 1];
+
+    if (bind->buffer_type != pColSchema->type) {
+      return buildInvalidOperationMsg(&pBuf, "column type mis-match with buffer type");
+    }
+
+    if (bind->num != rowNum) {
+      return buildInvalidOperationMsg(&pBuf, "row number in each bind param should be the same");
+    }
+    
+    param.schema = pColSchema;
+    getSTSRowAppendInfo(pBuilder->rowType, spd, colIdx, &param.toffset, &param.colIdx);
+
+    if (bind->is_null && bind->is_null[r]) {
+      if (pColSchema->colId == PRIMARYKEY_TIMESTAMP_COL_ID) {
+        return buildInvalidOperationMsg(&pBuf, "primary timestamp should not be NULL");
+      }
+      
+      CHECK_CODE(MemRowAppend(&pBuf, NULL, 0, &param));
+    } else {
+      int32_t colLen = pColSchema->bytes;
+      if (IS_VAR_DATA_TYPE(pColSchema->type)) {
+        colLen = bind->length[r];
+      }
+      
+      CHECK_CODE(MemRowAppend(&pBuf, (char *)bind->buffer + bind->buffer_length * r, colLen, &param));
+    }
+  
+    if (PRIMARYKEY_TIMESTAMP_COL_ID == pColSchema->colId) {
+      TSKEY tsKey = TD_ROW_KEY(row);
+      checkTimestamp(pDataBlock, (const char *)&tsKey);
+    }
+    
+    // set the null value for the columns that do not assign values
+    if (rowEnd && (spd->numOfBound < spd->numOfCols) && TD_IS_TP_ROW(row)) {
+      for (int32_t i = 0; i < spd->numOfCols; ++i) {
+        if (spd->cols[i].valStat == VAL_STAT_NONE) {  // the primary TS key is not VAL_STAT_NONE
+          tdAppendColValToTpRow(pBuilder, TD_VTYPE_NONE, getNullValue(pSchema[i].type), true, pSchema[i].type, i,
+                                spd->cols[i].toffset);
+        }
+      }
+    }    
+  }
+
+  if (rowEnd) {
+    pDataBlock->size += extendedRowSize * bind->num;
+
+    SSubmitBlk *pBlocks = (SSubmitBlk *)(pDataBlock->pData);
+    if (TSDB_CODE_SUCCESS != setBlockInfo(pBlocks, pDataBlock, bind->num)) {
+      return buildInvalidOperationMsg(&pBuf, "too many rows in sql, total number of rows should be less than 32767");
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t buildBoundFields(SParsedDataColInfo *boundInfo, SSchema *pSchema, int32_t *fieldNum, TAOS_FIELD** fields) {
+  if (fields) {
+    *fields = taosMemoryCalloc(boundInfo->numOfBound, sizeof(TAOS_FIELD));
+    if (NULL == *fields) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+
+    for (int32_t i = 0; i < boundInfo->numOfBound; ++i) {
+      SSchema* pTagSchema = &pSchema[boundInfo->boundColumns[i] - 1];
+      strcpy((*fields)[i].name, pTagSchema->name);
+      (*fields)[i].type = pTagSchema->type;
+      (*fields)[i].bytes = pTagSchema->bytes;
+    }
+  }
+
+  *fieldNum = boundInfo->numOfBound;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t qBuildStmtTagFields(void *pBlock, void *boundTags, int32_t *fieldNum, TAOS_FIELD** fields) {
+  STableDataBlocks *pDataBlock = (STableDataBlocks *)pBlock;
+  SParsedDataColInfo* tags = (SParsedDataColInfo*)boundTags;
+  if (NULL == tags) {
+    return TSDB_CODE_QRY_APP_ERROR;
+  }
+  
+  SSchema* pSchema = getTableTagSchema(pDataBlock->pTableMeta);  
+  if (tags->numOfBound <= 0) {
+    *fieldNum = 0;
+    *fields = NULL;
+
+    return TSDB_CODE_SUCCESS;
+  }
+
+  CHECK_CODE(buildBoundFields(tags, pSchema, fieldNum, fields));
+  
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t qBuildStmtColFields(void *pBlock, int32_t *fieldNum, TAOS_FIELD** fields) {
+  STableDataBlocks *pDataBlock = (STableDataBlocks *)pBlock;
+  SSchema* pSchema = getTableColumnSchema(pDataBlock->pTableMeta);  
+  if (pDataBlock->boundColumnInfo.numOfBound <= 0) {
+    *fieldNum = 0;
+    if (fields) {
+      *fields = NULL;
+    }
+
+    return TSDB_CODE_SUCCESS;
+  }
+
+  CHECK_CODE(buildBoundFields(&pDataBlock->boundColumnInfo, pSchema, fieldNum, fields));
+  
+  return TSDB_CODE_SUCCESS;
+}
+
+
+
diff --git a/source/libs/parser/src/parInsertData.c b/source/libs/parser/src/parInsertData.c
index 088b25d544..bf30915fcb 100644
--- a/source/libs/parser/src/parInsertData.c
+++ b/source/libs/parser/src/parInsertData.c
@@ -18,6 +18,7 @@
 #include "catalog.h"
 #include "parUtil.h"
 #include "querynodes.h"
+#include "parInt.h"
 
 #define IS_RAW_PAYLOAD(t) \
   (((int)(t)) == PAYLOAD_TYPE_RAW)  // 0: K-V payload for non-prepare insert, 1: rawPayload for prepare insert
@@ -102,7 +103,13 @@ int32_t boundIdxCompar(const void *lhs, const void *rhs) {
   }
 }
 
-void destroyBoundColumnInfo(SParsedDataColInfo* pColList) {
+void destroyBoundColumnInfo(void* pBoundInfo) {
+  if (NULL == pBoundInfo) {
+    return;
+  }
+
+  SParsedDataColInfo* pColList = (SParsedDataColInfo*)pBoundInfo;
+  
   taosMemoryFreeClear(pColList->boundColumns);
   taosMemoryFreeClear(pColList->cols);
   taosMemoryFreeClear(pColList->colIdxInfo);
@@ -149,7 +156,7 @@ static int32_t createDataBlock(size_t defaultSize, int32_t rowSize, int32_t star
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t buildCreateTbMsg(STableDataBlocks* pBlocks, SVCreateTbReq* pCreateTbReq) {
+int32_t buildCreateTbMsg(STableDataBlocks* pBlocks, SVCreateTbReq* pCreateTbReq) {
   int32_t len = tSerializeSVCreateTbReq(NULL, pCreateTbReq);
   if (pBlocks->nAllocSize - pBlocks->size < len) {
     pBlocks->nAllocSize += len + pBlocks->rowSize;
@@ -506,6 +513,28 @@ int32_t mergeTableDataBlocks(SHashObj* pHashObj, uint8_t payloadType, SArray** p
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t allocateMemForSize(STableDataBlocks *pDataBlock, int32_t allSize) {
+  size_t    remain = pDataBlock->nAllocSize - pDataBlock->size;
+  uint32_t nAllocSizeOld = pDataBlock->nAllocSize;
+  
+  // expand the allocated size
+  if (remain < allSize) {
+    pDataBlock->nAllocSize = (pDataBlock->size + allSize) * 1.5;
+
+    char *tmp = taosMemoryRealloc(pDataBlock->pData, (size_t)pDataBlock->nAllocSize);
+    if (tmp != NULL) {
+      pDataBlock->pData = tmp;
+      memset(pDataBlock->pData + pDataBlock->size, 0, pDataBlock->nAllocSize - pDataBlock->size);
+    } else {
+      // do nothing, if allocate more memory failed
+      pDataBlock->nAllocSize = nAllocSizeOld;
+      return TSDB_CODE_TSC_OUT_OF_MEMORY;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t allocateMemIfNeed(STableDataBlocks *pDataBlock, int32_t rowSize, int32_t * numOfRows) {
   size_t    remain = pDataBlock->nAllocSize - pDataBlock->size;
   const int factor = 5;
@@ -541,3 +570,84 @@ int  initRowBuilder(SRowBuilder *pBuilder, int16_t schemaVer, SParsedDataColInfo
                         pColInfo->boundNullLen);
   return TSDB_CODE_SUCCESS;
 }
+
+
+int32_t qResetStmtDataBlock(void* block, bool keepBuf) {
+  STableDataBlocks* pBlock = (STableDataBlocks*)block;
+
+  if (keepBuf) {
+    taosMemoryFreeClear(pBlock->pData);
+    pBlock->pData = taosMemoryMalloc(TSDB_PAYLOAD_SIZE);
+    if (NULL == pBlock->pData) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    memset(pBlock->pData, 0, sizeof(SSubmitBlk));
+  } else {
+    pBlock->pData  = NULL;
+  }
+  
+  pBlock->ordered  = true;
+  pBlock->prevTS   = INT64_MIN;
+  pBlock->size     = sizeof(SSubmitBlk);
+  pBlock->tsSource = -1;
+  pBlock->numOfTables = 1;
+  pBlock->nAllocSize = TSDB_PAYLOAD_SIZE;
+  pBlock->headerSize = pBlock->size;
+  
+  memset(&pBlock->rowBuilder, 0, sizeof(pBlock->rowBuilder));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t qCloneStmtDataBlock(void** pDst, void* pSrc) {
+  *pDst = taosMemoryMalloc(sizeof(STableDataBlocks));
+  if (NULL == *pDst) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  
+  memcpy(*pDst, pSrc, sizeof(STableDataBlocks));
+  ((STableDataBlocks*)(*pDst))->cloned = true;
+  
+  return qResetStmtDataBlock(*pDst, false);
+}
+
+int32_t qRebuildStmtDataBlock(void** pDst, void* pSrc) {
+  int32_t code = qCloneStmtDataBlock(pDst, pSrc);
+  if (code) {
+    return code;
+  }
+
+  STableDataBlocks *pBlock = (STableDataBlocks*)*pDst;
+  pBlock->pData = taosMemoryMalloc(pBlock->nAllocSize);
+  if (NULL == pBlock->pData) {
+    qFreeStmtDataBlock(pBlock);
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  memset(pBlock->pData, 0, sizeof(SSubmitBlk));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+void qFreeStmtDataBlock(void* pDataBlock) {
+  if (pDataBlock == NULL) {
+    return;
+  }
+
+  taosMemoryFreeClear(((STableDataBlocks*)pDataBlock)->pData);
+  taosMemoryFreeClear(pDataBlock);
+}
+
+void qDestroyStmtDataBlock(void* pBlock) {
+  if (pBlock == NULL) {
+    return;
+  }
+
+  STableDataBlocks* pDataBlock = (STableDataBlocks*)pBlock;
+
+  pDataBlock->cloned = false;
+  destroyDataBlock(pDataBlock);
+}
+
diff --git a/source/libs/parser/src/parser.c b/source/libs/parser/src/parser.c
index ebe76cc129..e2e2207c70 100644
--- a/source/libs/parser/src/parser.c
+++ b/source/libs/parser/src/parser.c
@@ -18,7 +18,11 @@
 #include "parInt.h"
 #include "parToken.h"
 
-static bool isInsertSql(const char* pStr, size_t length) {
+bool isInsertSql(const char* pStr, size_t length) {
+  if (NULL == pStr) {
+    return false;
+  }
+  
   int32_t index = 0;
 
   do {
@@ -68,4 +72,4 @@ void qDestroyQuery(SQuery* pQueryNode) {
 
 int32_t qExtractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pSchema) {
   return extractResultSchema(pRoot, numOfCols, pSchema);
-}
\ No newline at end of file
+}
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index ded42365b6..9332cb481e 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -138,6 +138,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON,             "Invalid JSON format")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_TYPE,        "Invalid JSON data type")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_VALUE_OUT_OF_RANGE,       "Value out of range")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_INPUT,            "Invalid tsc input")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_STMT_API_ERROR,           "Stmt API usage error")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_STMT_TBNAME_ERROR,        "Stmt table name not set")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_STMT_CLAUSE_ERROR,        "not supported stmt clause")
 
 // mnode-common
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_APP_ERROR,                "Mnode internal error")
diff --git a/tests/script/api/batchprepare.c b/tests/script/api/batchprepare.c
index de1050850d..2e046bd3ff 100644
--- a/tests/script/api/batchprepare.c
+++ b/tests/script/api/batchprepare.c
@@ -5,840 +5,932 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>
+#include <pthread.h>
 #include <unistd.h>
 #include "../../../include/client/taos.h"
 
+int32_t shortColList[] = {TSDB_DATA_TYPE_TIMESTAMP, TSDB_DATA_TYPE_INT};
+int32_t fullColList[] = {TSDB_DATA_TYPE_TIMESTAMP, TSDB_DATA_TYPE_BOOL, TSDB_DATA_TYPE_TINYINT, TSDB_DATA_TYPE_UTINYINT, TSDB_DATA_TYPE_SMALLINT, TSDB_DATA_TYPE_USMALLINT, TSDB_DATA_TYPE_INT, TSDB_DATA_TYPE_UINT, TSDB_DATA_TYPE_BIGINT, TSDB_DATA_TYPE_UBIGINT, TSDB_DATA_TYPE_FLOAT, TSDB_DATA_TYPE_DOUBLE, TSDB_DATA_TYPE_BINARY, TSDB_DATA_TYPE_NCHAR};
+int32_t bindColTypeList[] = {TSDB_DATA_TYPE_TIMESTAMP, TSDB_DATA_TYPE_NCHAR};
+
+#define tListLen(x) (sizeof(x) / sizeof((x)[0]))
+
 typedef struct {
-  TAOS     *taos;
-  int idx;
-}T_par;
+  int64_t*   tsData;
+  bool*      boolData;
+  int8_t*    tinyData;
+  uint8_t*   utinyData;
+  int16_t*   smallData;
+  uint16_t*  usmallData;
+  int32_t*   intData;
+  uint32_t*  uintData;
+  int64_t*   bigData;
+  uint64_t*  ubigData;
+  float*     floatData;
+  double*    doubleData;
+  char*      binaryData;
+  char*      isNull;
+  int32_t*   binaryLen;
+  TAOS_BIND_v2* pBind;
+  char*         sql;
+  int32_t*      colTypes;
+  int32_t       colNum;
+} BindData;
 
-void taosMsleep(int mseconds);
+int32_t gVarCharSize = 10;
+int32_t gVarCharLen = 5;
 
-unsigned long long getCurrentTime(){
-    struct timeval tv;
-    if (taosGetTimeOfDay(&tv) != 0) {
-        perror("Failed to get current time in ms");
-        exit(EXIT_FAILURE);
+int32_t gExecLoopTimes = 1; // no change
+int32_t gFullColNum = tListLen(fullColList);
+
+int insertMBSETest1(TAOS_STMT *stmt);
+int insertMBSETest2(TAOS_STMT *stmt);
+int insertMBMETest1(TAOS_STMT *stmt);
+int insertMBMETest2(TAOS_STMT *stmt);
+int insertMBMETest3(TAOS_STMT *stmt);
+int insertMBMETest4(TAOS_STMT *stmt);
+int insertMPMETest1(TAOS_STMT *stmt);
+
+
+
+
+typedef struct {
+  char     caseDesc[128];
+  int32_t  colNum;
+  int32_t *colList;         // full table column list
+  bool     autoCreate;
+  bool     fullCol;
+  int32_t  (*runFn)(TAOS_STMT*);
+  int32_t  tblNum;
+  int32_t  rowNum;
+  int32_t  bindRowNum;
+  int32_t  bindColNum;      // equal colNum in full column case
+  int32_t  bindNullNum;
+  int32_t  runTimes;
+} CaseCfg;
+
+CaseCfg gCase[] = {
+  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1,  1, 10, 10, 0, 0, 1},
+  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1, 10, 100, 10, 0, 0, 1},
+
+  {"insert:MBSE1-FULL", tListLen(fullColList), fullColList, false, true, insertMBSETest1, 10, 10, 2, 0, 0, 1},
+  {"insert:MBSE1-C012", tListLen(fullColList), fullColList, false, false, insertMBSETest1, 10, 10, 2, 12, 0, 1},
+  {"insert:MBSE1-C002", tListLen(fullColList), fullColList, false, false, insertMBSETest1, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBSE2-FULL", tListLen(fullColList), fullColList, false, true, insertMBSETest2, 10, 10, 2, 0, 0, 1},
+  {"insert:MBSE2-C012", tListLen(fullColList), fullColList, false, false, insertMBSETest2, 10, 10, 2, 12, 0, 1},
+  {"insert:MBSE2-C002", tListLen(fullColList), fullColList, false, false, insertMBSETest2, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME1-FULL", tListLen(fullColList), fullColList, false, true, insertMBMETest1, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME1-C012", tListLen(fullColList), fullColList, false, false, insertMBMETest1, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME1-C002", tListLen(fullColList), fullColList, false, false, insertMBMETest1, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME2-FULL", tListLen(fullColList), fullColList, false, true, insertMBMETest2, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME2-C012", tListLen(fullColList), fullColList, false, false, insertMBMETest2, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME2-C002", tListLen(fullColList), fullColList, false, false, insertMBMETest2, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME3-FULL", tListLen(fullColList), fullColList, false, true, insertMBMETest3, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME3-C012", tListLen(fullColList), fullColList, false, false, insertMBMETest3, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME3-C002", tListLen(fullColList), fullColList, false, false, insertMBMETest3, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME4-FULL", tListLen(fullColList), fullColList, false, true, insertMBMETest4, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME4-C012", tListLen(fullColList), fullColList, false, false, insertMBMETest4, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME4-C002", tListLen(fullColList), fullColList, false, false, insertMBMETest4, 10, 10, 2, 2, 0, 1},
+
+
+  {"insert:MPME1-FULL", tListLen(fullColList), fullColList, false, true, insertMPMETest1, 10, 10, 2, 0, 0, 1},
+  {"insert:MPME1-C012", tListLen(fullColList), fullColList, false, false, insertMPMETest1, 10, 10, 2, 12, 0, 1},
+
+};
+
+CaseCfg *gCurCase = NULL;
+
+typedef struct {
+  int32_t  bindNullNum;
+  bool     autoCreate;
+  bool     checkParamNum;
+  bool     printRes;
+  bool     printCreateTblSql;
+  bool     printInsertSql;
+  int32_t  rowNum;               //row num for one table
+  int32_t  bindColNum;
+  int32_t  bindRowNum;           //row num for once bind
+  int32_t  bindColTypeNum;
+  int32_t* bindColTypeList;
+  int32_t  runTimes;
+} CaseCtrl;
+
+CaseCtrl gCaseCtrl = {
+  .bindNullNum = 0,
+  .autoCreate = false,
+  .printCreateTblSql = false,
+  .printInsertSql = true,
+  .rowNum = 0,
+  .bindColNum = 0,
+  .bindRowNum = 0,
+  .bindColTypeNum = 0,
+  .bindColTypeList = NULL,
+  .checkParamNum = false,
+  .printRes = true,
+  .runTimes = 0,
+};
+
+int32_t taosGetTimeOfDay(struct timeval *tv) {
+  return gettimeofday(tv, NULL);
+}
+void *taosMemoryMalloc(uint64_t size) {
+  return malloc(size);
+}
+
+void *taosMemoryCalloc(int32_t num, int32_t size) {
+  return calloc(num, size);
+}
+void taosMemoryFree(const void *ptr) {
+  if (ptr == NULL) return;
+
+  return free((void*)ptr);
+}
+
+static int64_t taosGetTimestampMs() {
+  struct timeval systemTime;
+  taosGetTimeOfDay(&systemTime);
+  return (int64_t)systemTime.tv_sec * 1000L + (int64_t)systemTime.tv_usec/1000;
+}
+
+static int64_t taosGetTimestampUs() {
+  struct timeval systemTime;
+  taosGetTimeOfDay(&systemTime);
+  return (int64_t)systemTime.tv_sec * 1000000L + (int64_t)systemTime.tv_usec;
+}
+
+bool colExists(TAOS_BIND_v2* pBind, int32_t dataType) {
+  int32_t i = 0;
+  while (true) {
+    if (0 == pBind[i].buffer_type) {
+      return false;
     }
 
-    return (uint64_t)tv.tv_sec * 1000000ULL + (uint64_t)tv.tv_usec;
+    if (pBind[i].buffer_type == dataType) {
+      return true;
+    }
+
+    ++i;
+  }
+}
+
+void generateInsertSQL(BindData *data) {
+  int32_t len = sprintf(data->sql, "insert into %s ", (gCurCase->tblNum > 1 ? "? " : "t0 "));
+  if (!gCurCase->fullCol) {
+    len += sprintf(data->sql + len, "(");
+    for (int c = 0; c < gCurCase->bindColNum; ++c) {
+      if (c) {
+        len += sprintf(data->sql + len, ",");
+      }
+      switch (data->pBind[c].buffer_type) {  
+        case TSDB_DATA_TYPE_BOOL:
+          len += sprintf(data->sql + len, "booldata");
+          break;
+        case TSDB_DATA_TYPE_TINYINT:
+          len += sprintf(data->sql + len, "tinydata");
+          break;
+        case TSDB_DATA_TYPE_SMALLINT:
+          len += sprintf(data->sql + len, "smalldata");
+          break;
+        case TSDB_DATA_TYPE_INT:
+          len += sprintf(data->sql + len, "intdata");
+          break;
+        case TSDB_DATA_TYPE_BIGINT:
+          len += sprintf(data->sql + len, "bigdata");
+          break;
+        case TSDB_DATA_TYPE_FLOAT:
+          len += sprintf(data->sql + len, "floatdata");
+          break;
+        case TSDB_DATA_TYPE_DOUBLE:
+          len += sprintf(data->sql + len, "doubledata");
+          break;
+        case TSDB_DATA_TYPE_VARCHAR:
+          len += sprintf(data->sql + len, "binarydata");
+          break;
+        case TSDB_DATA_TYPE_TIMESTAMP:
+          len += sprintf(data->sql + len, "ts");
+          break;
+        case TSDB_DATA_TYPE_NCHAR:
+          len += sprintf(data->sql + len, "nchardata");
+          break;
+        case TSDB_DATA_TYPE_UTINYINT:
+          len += sprintf(data->sql + len, "utinydata");
+          break;
+        case TSDB_DATA_TYPE_USMALLINT:
+          len += sprintf(data->sql + len, "usmalldata");
+          break;
+        case TSDB_DATA_TYPE_UINT:
+          len += sprintf(data->sql + len, "uintdata");
+          break;
+        case TSDB_DATA_TYPE_UBIGINT:
+          len += sprintf(data->sql + len, "ubigdata");
+          break;
+        default:
+          printf("invalid col type:%d", data->pBind[c].buffer_type);
+          exit(1);
+      }
+    }
+    
+    len += sprintf(data->sql + len, ") ");
+  }
+
+  len += sprintf(data->sql + len, "values (");
+  for (int c = 0; c < gCurCase->bindColNum; ++c) {
+    if (c) {
+      len += sprintf(data->sql + len, ",");
+    }
+    len += sprintf(data->sql + len, "?");
+  }
+  len += sprintf(data->sql + len, ")");
+
+  if (gCaseCtrl.printInsertSql) {
+    printf("SQL: %s\n", data->sql);
+  }  
+}
+
+void generateDataType(BindData *data, int32_t bindIdx, int32_t colIdx, int32_t *dataType) {
+  if (bindIdx < gCurCase->bindColNum) {
+    if (gCaseCtrl.bindColTypeNum) {
+      *dataType = gCaseCtrl.bindColTypeList[colIdx];
+      return;
+    } else if (gCurCase->fullCol) {
+      *dataType = gCurCase->colList[bindIdx];
+      return;
+    } else if (0 == colIdx) {
+      *dataType = TSDB_DATA_TYPE_TIMESTAMP;
+      return;
+    } else {
+      while (true) {
+        *dataType = rand() % (TSDB_DATA_TYPE_MAX - 1) + 1;
+        if (*dataType == TSDB_DATA_TYPE_JSON || *dataType == TSDB_DATA_TYPE_DECIMAL 
+         || *dataType == TSDB_DATA_TYPE_BLOB || *dataType == TSDB_DATA_TYPE_MEDIUMBLOB
+         || *dataType == TSDB_DATA_TYPE_VARBINARY) {
+          continue;
+        }
+
+        if (colExists(data->pBind, *dataType)) {
+          continue;
+        }
+        
+        break;
+      }
+    }
+  } else {
+    *dataType = data->pBind[bindIdx%gCurCase->bindColNum].buffer_type;
+  }
+}
+
+int32_t prepareColData(BindData *data, int32_t bindIdx, int32_t rowIdx, int32_t colIdx) {
+  int32_t dataType = TSDB_DATA_TYPE_TIMESTAMP;
+
+  generateDataType(data, bindIdx, colIdx, &dataType);
+
+  switch (dataType) {  
+    case TSDB_DATA_TYPE_BOOL:
+      data->pBind[bindIdx].buffer_length = sizeof(bool);
+      data->pBind[bindIdx].buffer = data->boolData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_TINYINT:
+      data->pBind[bindIdx].buffer_length = sizeof(int8_t);
+      data->pBind[bindIdx].buffer = data->tinyData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_SMALLINT:
+      data->pBind[bindIdx].buffer_length = sizeof(int16_t);
+      data->pBind[bindIdx].buffer = data->smallData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_INT:
+      data->pBind[bindIdx].buffer_length = sizeof(int32_t);
+      data->pBind[bindIdx].buffer = data->intData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_BIGINT:
+      data->pBind[bindIdx].buffer_length = sizeof(int64_t);
+      data->pBind[bindIdx].buffer = data->bigData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_FLOAT:
+      data->pBind[bindIdx].buffer_length = sizeof(float);
+      data->pBind[bindIdx].buffer = data->floatData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_DOUBLE:
+      data->pBind[bindIdx].buffer_length = sizeof(double);
+      data->pBind[bindIdx].buffer = data->doubleData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_VARCHAR:
+      data->pBind[bindIdx].buffer_length = gVarCharSize;
+      data->pBind[bindIdx].buffer = data->binaryData + rowIdx * gVarCharSize;
+      data->pBind[bindIdx].length = data->binaryLen;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_TIMESTAMP:
+      data->pBind[bindIdx].buffer_length = sizeof(int64_t);
+      data->pBind[bindIdx].buffer = data->tsData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = NULL;
+      break;
+    case TSDB_DATA_TYPE_NCHAR:
+      data->pBind[bindIdx].buffer_length = gVarCharSize;
+      data->pBind[bindIdx].buffer = data->binaryData + rowIdx * gVarCharSize;
+      data->pBind[bindIdx].length = data->binaryLen;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_UTINYINT:
+      data->pBind[bindIdx].buffer_length = sizeof(uint8_t);
+      data->pBind[bindIdx].buffer = data->utinyData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_USMALLINT:
+      data->pBind[bindIdx].buffer_length = sizeof(uint16_t);
+      data->pBind[bindIdx].buffer = data->usmallData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_UINT:
+      data->pBind[bindIdx].buffer_length = sizeof(uint32_t);
+      data->pBind[bindIdx].buffer = data->uintData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    case TSDB_DATA_TYPE_UBIGINT:
+      data->pBind[bindIdx].buffer_length = sizeof(uint64_t);
+      data->pBind[bindIdx].buffer = data->ubigData + rowIdx;
+      data->pBind[bindIdx].length = NULL;
+      data->pBind[bindIdx].is_null = data->isNull ? (data->isNull + rowIdx) : NULL;
+      break;
+    default:
+      printf("invalid col type:%d", dataType);
+      exit(1);
+  }
+
+  data->pBind[bindIdx].buffer_type = dataType;
+  data->pBind[bindIdx].num = gCurCase->bindRowNum;
+
+  return 0;
 }
 
 
-
-
-
-int stmt_scol_func1(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
+int32_t prepareData(BindData *data) {
+  static int64_t tsData = 1591060628000;
+  uint64_t allRowNum = gCurCase->rowNum * gCurCase->tblNum;
   
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[1].buffer_length = sizeof(v.v1);
-  params[1].buffer = &v.v1;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[2].buffer_length = sizeof(v.v2);
-  params[2].buffer = &v.v2;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[3].buffer_length = sizeof(v.f4);
-  params[3].buffer = &v.f4;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[4].buffer_length = sizeof(v.bin);
-  params[4].buffer = v.bin;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[5].buffer_length = sizeof(v.bin);
-  params[5].buffer = v.bin;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  char *sql = "insert into ? (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+  data->colNum = 0;
+  data->colTypes = taosMemoryCalloc(30, sizeof(int32_t));
+  data->sql = taosMemoryCalloc(1, 1024);
+  data->pBind = taosMemoryCalloc((allRowNum/gCurCase->bindRowNum)*gCurCase->bindColNum, sizeof(TAOS_BIND_v2));
+  data->tsData = taosMemoryMalloc(allRowNum * sizeof(int64_t));
+  data->boolData = taosMemoryMalloc(allRowNum * sizeof(bool));
+  data->tinyData = taosMemoryMalloc(allRowNum * sizeof(int8_t));
+  data->utinyData = taosMemoryMalloc(allRowNum * sizeof(uint8_t));
+  data->smallData = taosMemoryMalloc(allRowNum * sizeof(int16_t));
+  data->usmallData = taosMemoryMalloc(allRowNum * sizeof(uint16_t));
+  data->intData = taosMemoryMalloc(allRowNum * sizeof(int32_t));
+  data->uintData = taosMemoryMalloc(allRowNum * sizeof(uint32_t));
+  data->bigData = taosMemoryMalloc(allRowNum * sizeof(int64_t));
+  data->ubigData = taosMemoryMalloc(allRowNum * sizeof(uint64_t));
+  data->floatData = taosMemoryMalloc(allRowNum * sizeof(float));
+  data->doubleData = taosMemoryMalloc(allRowNum * sizeof(double));
+  data->binaryData = taosMemoryMalloc(allRowNum * gVarCharSize);
+  data->binaryLen = taosMemoryMalloc(allRowNum * sizeof(int32_t));
+  if (gCurCase->bindNullNum) {
+    data->isNull = taosMemoryCalloc(allRowNum, sizeof(char));
   }
   
-  for (int zz = 0; zz < 10; zz++) {
-    char buf[32];
-    sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname(stmt, buf);
-    if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      exit(1);
-    }  
-    v.ts = 1591060628000 + zz * 10;
-    for (int i = 0; i < 10; ++i) {
-      v.ts += 1;
+  for (int32_t i = 0; i < allRowNum; ++i) {
+    data->tsData[i] = tsData++;
+    data->boolData[i] = i % 2;
+    data->tinyData[i] = i;
+    data->utinyData[i] = i+1;
+    data->smallData[i] = i;
+    data->usmallData[i] = i+1;
+    data->intData[i] = i;
+    data->uintData[i] = i+1;
+    data->bigData[i] = i;
+    data->ubigData[i] = i+1;
+    data->floatData[i] = i;
+    data->doubleData[i] = i+1;
+    memset(data->binaryData + gVarCharSize * i, 'a'+i%26, gVarCharLen);
+    if (gCurCase->bindNullNum) {
+      data->isNull[i] = i % 2;
+    }
+    data->binaryLen[i] = gVarCharLen;
+  }
 
-      v.b = (int8_t)(i+zz*10) % 2;
-      v.v1 = (int8_t)(i+zz*10);
-      v.v2 = (int16_t)((i+zz*10) * 2);
-      v.v4 = (int32_t)((i+zz*10) * 4);
-      v.v8 = (int64_t)((i+zz*10) * 8);
-      v.f4 = (float)((i+zz*10) * 40);
-      v.f8 = (double)((i+zz*10) * 80);
-      for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i)%10 + '0');
-      }
-
-      taos_stmt_bind_param(stmt, params);
-      taos_stmt_add_batch(stmt);
+  for (int b = 0; b < (allRowNum/gCurCase->bindRowNum); b++) {
+    for (int c = 0; c < gCurCase->bindColNum; ++c) {
+      prepareColData(data, b*gCurCase->bindColNum+c, b*gCurCase->bindRowNum, c);
     }
   }
 
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
+  generateInsertSQL(data);
+  
+  return 0;
+}
+
+void destroyData(BindData *data) {
+  taosMemoryFree(data->tsData);
+  taosMemoryFree(data->boolData);
+  taosMemoryFree(data->tinyData);
+  taosMemoryFree(data->utinyData);
+  taosMemoryFree(data->smallData);
+  taosMemoryFree(data->usmallData);
+  taosMemoryFree(data->intData);
+  taosMemoryFree(data->uintData);
+  taosMemoryFree(data->bigData);
+  taosMemoryFree(data->ubigData);
+  taosMemoryFree(data->floatData);
+  taosMemoryFree(data->doubleData);
+  taosMemoryFree(data->binaryData);
+  taosMemoryFree(data->binaryLen);
+  taosMemoryFree(data->isNull);
+  taosMemoryFree(data->pBind);
+  taosMemoryFree(data->colTypes);
+}
+
+int32_t bpBindParam(TAOS_STMT *stmt, TAOS_BIND_v2 *bind) {
+  static int32_t n = 0;
+  
+  if (gCurCase->bindRowNum > 1) {
+    if (0 == (n++%2)) {
+      if (taos_stmt_bind_param_batch(stmt, bind)) {
+        printf("taos_stmt_bind_param_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    } else {
+      for (int32_t i = 0; i < gCurCase->bindColNum; ++i) {
+        if (taos_stmt_bind_single_param_batch(stmt, bind++, i)) {
+          printf("taos_stmt_bind_single_param_batch error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
+        }
+      }
+    }
+  } else {
+    if (taos_stmt_bind_param(stmt, bind)) {
+      printf("taos_stmt_bind_param error:%s\n", taos_stmt_errstr(stmt));
+      exit(1);
+    }
+  }
+
+  return 0;
+}
+
+void bpCheckIsInsert(TAOS_STMT *stmt) {
+  int32_t isInsert = 0;
+  if (taos_stmt_is_insert(stmt, &isInsert)) {
+    printf("taos_stmt_is_insert error:%s\n", taos_stmt_errstr(stmt));
     exit(1);
   }
 
-  return 0;
+  if (0 == isInsert) {
+    printf("is insert failed\n");
+    exit(1);
+  }
 }
 
-
-
-int stmt_scol_func2(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[1].buffer_length = sizeof(v.v1);
-  params[1].buffer = &v.v1;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[2].buffer_length = sizeof(v.v2);
-  params[2].buffer = &v.v2;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[3].buffer_length = sizeof(v.f4);
-  params[3].buffer = &v.f4;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[4].buffer_length = sizeof(v.bin);
-  params[4].buffer = v.bin;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[5].buffer_length = sizeof(v.bin);
-  params[5].buffer = v.bin;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  char *sql = "insert into m0 (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-  
-  for (int zz = 0; zz < 10; zz++) {
-    v.ts = 1591060628000 + zz * 10;
-    for (int i = 0; i < 10; ++i) {
-      v.ts += 1;
-
-      v.b = (int8_t)(i+zz*10) % 2;
-      v.v1 = (int8_t)(i+zz*10);
-      v.v2 = (int16_t)((i+zz*10) * 2);
-      v.v4 = (int32_t)((i+zz*10) * 4);
-      v.v8 = (int64_t)((i+zz*10) * 8);
-      v.f4 = (float)((i+zz*10) * 40);
-      v.f8 = (double)((i+zz*10) * 80);
-      for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i)%10 + '0');
-      }
-
-      taos_stmt_bind_param(stmt, params);
-      taos_stmt_add_batch(stmt);
-    }
-  }
-
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
+void bpCheckParamNum(TAOS_STMT *stmt) {
+  int32_t num = 0;
+  if (taos_stmt_num_params(stmt, &num)) {
+    printf("taos_stmt_num_params error:%s\n", taos_stmt_errstr(stmt));
     exit(1);
   }
 
-  return 0;
+  if (gCurCase->bindColNum != num) {
+    printf("is insert failed\n");
+    exit(1);
+  }
+}
+
+void bpCheckAffectedRows(TAOS_STMT *stmt, int32_t times) {
+  int32_t rows = taos_stmt_affected_rows(stmt);
+  int32_t insertNum = gCurCase->rowNum * gCurCase->tblNum * times;
+  if (insertNum != rows) {
+    printf("affected rows %d mis-match with insert num %d\n", rows, insertNum);
+    exit(1);
+  }
 }
 
 
+/* prepare [settbname [bind add]] exec */
+int insertMBSETest1(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
 
-
-//300 tables 60 records
-int stmt_scol_func3(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 9000000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 10;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.v1;
-    params[i+1].length = NULL;
-    params[i+1].is_null = no_null;
-    params[i+1].num = 10;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+2].buffer_length = sizeof(int16_t);
-    params[i+2].buffer = v.v2;
-    params[i+2].length = NULL;
-    params[i+2].is_null = no_null;
-    params[i+2].num = 10;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+3].buffer_length = sizeof(float);
-    params[i+3].buffer = v.f4;
-    params[i+3].length = NULL;
-    params[i+3].is_null = no_null;
-    params[i+3].num = 10;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+4].buffer_length = 40;
-    params[i+4].buffer = v.bin;
-    params[i+4].length = lb;
-    params[i+4].is_null = no_null;
-    params[i+4].num = 10;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+5].buffer_length = 40;
-    params[i+5].buffer = v.bin;
-    params[i+5].length = lb;
-    params[i+5].is_null = no_null;
-    params[i+5].num = 10;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-  unsigned long long starttime = getCurrentTime();
-
-  char *sql = "insert into ? (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
   }
 
-  int id = 0;
-  for (int l = 0; l < 2; l++) {
-    for (int zz = 0; zz < 300; zz++) {
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+  for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+    if (gCurCase->tblNum > 1) {
       char buf[32];
-      sprintf(buf, "m%d", zz);
+      sprintf(buf, "t%d", t);
       code = taos_stmt_set_tbname(stmt, buf);
       if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
+        printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
       }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
     }
 
-    ++id;
-  }
-
-  unsigned long long endtime = getCurrentTime();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-
-//10 tables 10 records single column bind
-int stmt_scol_func4(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 10000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 2;
+    if (gCaseCtrl.checkParamNum) {
+      bpCheckParamNum(stmt);
+    }
     
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = no_null;
-    params[i+1].num = 2;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+2].buffer_length = sizeof(int32_t);
-    params[i+2].buffer = v.v4;
-    params[i+2].length = NULL;
-    params[i+2].is_null = no_null;
-    params[i+2].num = 2;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+3].buffer_length = sizeof(int64_t);
-    params[i+3].buffer = v.v8;
-    params[i+3].length = NULL;
-    params[i+3].is_null = no_null;
-    params[i+3].num = 2;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+4].buffer_length = sizeof(double);
-    params[i+4].buffer = v.f8;
-    params[i+4].length = NULL;
-    params[i+4].is_null = no_null;
-    params[i+4].num = 2;
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 60000; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-  unsigned long long starttime = getCurrentTime();
-
-  char *sql = "insert into ? (ts,b,v4,v8,f8) values(?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 10; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      for (int col=0; col < 10; ++col) {
-        taos_stmt_bind_single_param_batch(stmt, params + id++, col);
+    for (int32_t b = 0; b <bindTimes; ++b) {
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
       }
       
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
     }
   }
 
-  unsigned long long endtime = getCurrentTime();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
 
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
 
   return 0;
 }
 
 
+/* prepare [settbname bind add] exec  */
+int insertMBSETest2(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
 
-int stmt_func1(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
-  params[1].buffer_length = sizeof(v.b);
-  params[1].buffer = &v.b;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[2].buffer_length = sizeof(v.v1);
-  params[2].buffer = &v.v1;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[3].buffer_length = sizeof(v.v2);
-  params[3].buffer = &v.v2;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_INT;
-  params[4].buffer_length = sizeof(v.v4);
-  params[4].buffer = &v.v4;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-  params[5].buffer_length = sizeof(v.v8);
-  params[5].buffer = &v.v8;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
   }
+
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+
+  for (int32_t b = 0; b <bindTimes; ++b) {
+    for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+      if (gCurCase->tblNum > 1) {
+        char buf[32];
+        sprintf(buf, "t%d", t);
+        code = taos_stmt_set_tbname(stmt, buf);
+        if (code != 0){
+          printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
+        }  
+      }
+    
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
+      }
+
+      if (gCaseCtrl.checkParamNum) {
+        bpCheckParamNum(stmt);
+      }
+    
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    }
+  }
+
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
+
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
+
+  return 0;
+}
+
+/* prepare [settbname [bind add] exec] */
+int insertMBMETest1(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
   
-  for (int zz = 0; zz < 10; zz++) {
-    char buf[32];
-    sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname(stmt, buf);
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
+
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+  for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+    if (gCurCase->tblNum > 1) {
+      char buf[32];
+      sprintf(buf, "t%d", t);
+      code = taos_stmt_set_tbname(stmt, buf);
+      if (code != 0){
+        printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }  
+    }
+
+    if (gCaseCtrl.checkParamNum) {
+      bpCheckParamNum(stmt);
+    }
+    
+    for (int32_t b = 0; b <bindTimes; ++b) {
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
+      }
+      
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    }
+
+    if (taos_stmt_execute(stmt) != 0) {
+      printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+      exit(1);
+    }
+  }
+
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
+
+  return 0;
+}
+
+/* prepare [settbname [bind add exec]] */
+int insertMBMETest2(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
+
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
+
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+  for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+    if (gCurCase->tblNum > 1) {
+      char buf[32];
+      sprintf(buf, "t%d", t);
+      code = taos_stmt_set_tbname(stmt, buf);
+      if (code != 0){
+        printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }  
+    }
+    
+    for (int32_t b = 0; b <bindTimes; ++b) {
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
+      }
+
+      if (gCaseCtrl.checkParamNum) {
+        bpCheckParamNum(stmt);
+      }
+    
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+
+      if (taos_stmt_execute(stmt) != 0) {
+        printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    }
+  }
+
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
+
+  return 0;
+}
+
+/* prepare [settbname [settbname bind add exec]] */
+int insertMBMETest3(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
+
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
+
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+  for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+    if (gCurCase->tblNum > 1) {
+      char buf[32];
+      sprintf(buf, "t%d", t);
+      code = taos_stmt_set_tbname(stmt, buf);
+      if (code != 0){
+        printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }  
+    }
+
+    if (gCaseCtrl.checkParamNum) {
+      bpCheckParamNum(stmt);
+    }
+    
+    for (int32_t b = 0; b <bindTimes; ++b) {
+      if (gCurCase->tblNum > 1) {
+        char buf[32];
+        sprintf(buf, "t%d", t);
+        code = taos_stmt_set_tbname(stmt, buf);
+        if (code != 0){
+          printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
+        }  
+      }
+      
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
+      }
+      
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+
+      if (taos_stmt_execute(stmt) != 0) {
+        printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    }
+  }
+
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
+
+  return 0;
+}
+
+
+/* prepare [settbname bind add exec]   */
+int insertMBMETest4(TAOS_STMT *stmt) {
+  BindData data = {0};
+  prepareData(&data);
+
+  int code = taos_stmt_prepare(stmt, data.sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
+  }
+
+  bpCheckIsInsert(stmt);
+
+  int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+
+  for (int32_t b = 0; b <bindTimes; ++b) {
+    for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+      if (gCurCase->tblNum > 1) {
+        char buf[32];
+        sprintf(buf, "t%d", t);
+        code = taos_stmt_set_tbname(stmt, buf);
+        if (code != 0){
+          printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
+        }  
+      }
+    
+      if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+        exit(1);
+      }
+
+      if (gCaseCtrl.checkParamNum) {
+        bpCheckParamNum(stmt);
+      }
+    
+      if (taos_stmt_add_batch(stmt)) {
+        printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+
+      if (taos_stmt_execute(stmt) != 0) {
+        printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+    }
+  }
+
+  bpCheckIsInsert(stmt);
+  bpCheckAffectedRows(stmt, 1);
+
+  destroyData(&data);
+
+  return 0;
+}
+
+/* [prepare [settbname [bind add] exec]]   */
+int insertMPMETest1(TAOS_STMT *stmt) {
+  int32_t loop = 0;
+  
+  while (gCurCase->bindColNum >= 2) {
+    BindData data = {0};
+    prepareData(&data);
+
+    int code = taos_stmt_prepare(stmt, data.sql, 0);
     if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-    }  
-    v.ts = 1591060628000 + zz * 10;
-    for (int i = 0; i < 10; ++i) {
-      v.ts += 1;
-      for (int j = 1; j < 10; ++j) {
-        params[j].is_null = ((i == j) ? &is_null : 0);
-      }
-      v.b = (int8_t)(i+zz*10) % 2;
-      v.v1 = (int8_t)(i+zz*10);
-      v.v2 = (int16_t)((i+zz*10) * 2);
-      v.v4 = (int32_t)((i+zz*10) * 4);
-      v.v8 = (int64_t)((i+zz*10) * 8);
-      v.f4 = (float)((i+zz*10) * 40);
-      v.f8 = (double)((i+zz*10) * 80);
-      for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i+zz)%10 + '0');
-      }
-
-      taos_stmt_bind_param(stmt, params);
-      taos_stmt_add_batch(stmt);
-    }
-  }
-
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-  return 0;
-}
-
-
-int stmt_func2(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
-  params[1].buffer_length = sizeof(v.b);
-  params[1].buffer = &v.b;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[2].buffer_length = sizeof(v.v1);
-  params[2].buffer = &v.v1;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[3].buffer_length = sizeof(v.v2);
-  params[3].buffer = &v.v2;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_INT;
-  params[4].buffer_length = sizeof(v.v4);
-  params[4].buffer = &v.v4;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-  params[5].buffer_length = sizeof(v.v8);
-  params[5].buffer = &v.v8;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  for (int l = 0; l < 100; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-      v.ts = 1591060628000 + zz * 100 * l;
-      for (int i = 0; i < zz; ++i) {
-        v.ts += 1;
-        for (int j = 1; j < 10; ++j) {
-          params[j].is_null = ((i == j) ? &is_null : 0);
-        }
-        v.b = (int8_t)(i+zz*10) % 2;
-        v.v1 = (int8_t)(i+zz*10);
-        v.v2 = (int16_t)((i+zz*10) * 2);
-        v.v4 = (int32_t)((i+zz*10) * 4);
-        v.v8 = (int64_t)((i+zz*10) * 8);
-        v.f4 = (float)((i+zz*10) * 40);
-        v.f8 = (double)((i+zz*10) * 80);
-        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-          v.bin[j] = (char)((i+zz)%10 + '0');
-        }
-
-        taos_stmt_bind_param(stmt, params);
-        taos_stmt_add_batch(stmt);
-      }
-    }
-
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
+      printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
       exit(1);
     }
 
-  }
+    bpCheckIsInsert(stmt);
 
+    int32_t bindTimes = gCurCase->rowNum/gCurCase->bindRowNum;
+    for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+      if (gCurCase->tblNum > 1) {
+        char buf[32];
+        sprintf(buf, "t%d", t);
+        code = taos_stmt_set_tbname(stmt, buf);
+        if (code != 0){
+          printf("taos_stmt_set_tbname error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
+        }  
+      }
 
-  return 0;
-}
-
-
-
-
-int stmt_func3(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
-  params[1].buffer_length = sizeof(v.b);
-  params[1].buffer = &v.b;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[2].buffer_length = sizeof(v.v1);
-  params[2].buffer = &v.v1;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[3].buffer_length = sizeof(v.v2);
-  params[3].buffer = &v.v2;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_INT;
-  params[4].buffer_length = sizeof(v.v4);
-  params[4].buffer = &v.v4;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-  params[5].buffer_length = sizeof(v.v8);
-  params[5].buffer = &v.v8;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  for (int l = 0; l < 100; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-      v.ts = 1591060628000 + zz * 100 * l;
-      for (int i = 0; i < zz; ++i) {
-        v.ts += 1;
-        for (int j = 1; j < 10; ++j) {
-          params[j].is_null = ((i == j) ? &is_null : 0);
+      if (gCaseCtrl.checkParamNum) {
+        bpCheckParamNum(stmt);
+      }
+      
+      for (int32_t b = 0; b <bindTimes; ++b) {
+        if (bpBindParam(stmt, data.pBind + t*bindTimes*gCurCase->bindColNum + b*gCurCase->bindColNum)) {
+          exit(1);
         }
-        v.b = (int8_t)(i+zz*10) % 2;
-        v.v1 = (int8_t)(i+zz*10);
-        v.v2 = (int16_t)((i+zz*10) * 2);
-        v.v4 = (int32_t)((i+zz*10) * 4);
-        v.v8 = (int64_t)((i+zz*10) * 8);
-        v.f4 = (float)((i+zz*10) * 40);
-        v.f8 = (double)((i+zz*10) * 80);
-        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-          v.bin[j] = (char)((i+zz)%10 + '0');
+        
+        if (taos_stmt_add_batch(stmt)) {
+          printf("taos_stmt_add_batch error:%s\n", taos_stmt_errstr(stmt));
+          exit(1);
         }
+      }
 
-        taos_stmt_bind_param(stmt, params);
-        taos_stmt_add_batch(stmt);
+      if (taos_stmt_execute(stmt) != 0) {
+        printf("taos_stmt_execute error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
       }
     }
+
+    bpCheckIsInsert(stmt);
+
+    destroyData(&data);
+
+    gCurCase->bindColNum -= 2;
+    gCurCase->fullCol = false;
+    loop++;
   }
 
+  bpCheckAffectedRows(stmt, loop);
+
+  gExecLoopTimes = loop;
   
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-
   return 0;
 }
 
 
+#if 0
 
 //1 tables 10 records
 int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
@@ -859,7 +951,7 @@ int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1008,7 +1100,7 @@ int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1037,7 +1129,7 @@ int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -1072,7 +1164,7 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1221,7 +1313,7 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(1,true,2,3,4,5.0,6.0,'a','b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1250,7 +1342,7 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -1286,7 +1378,7 @@ int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1410,7 +1502,7 @@ int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1439,7 +1531,7 @@ int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -1477,7 +1569,7 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*5);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*5);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1565,7 +1657,7 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') (ts,b,v4,v8,f8) values(?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1594,7 +1686,7 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -1630,7 +1722,7 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1754,7 +1846,7 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1783,7 +1875,7 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -1819,7 +1911,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -1968,7 +2060,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -1998,7 +2090,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -2036,7 +2128,7 @@ int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -2185,7 +2277,7 @@ int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -2216,7 +2308,7 @@ int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -2251,7 +2343,7 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -2400,7 +2492,7 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -2441,7 +2533,7 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -2478,7 +2570,7 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -2627,7 +2719,7 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(NULL, sql, 0);
@@ -2668,7 +2760,7 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
 
   ++id;
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
@@ -2681,488 +2773,6 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
   return 0;
 }
 
-
-
-//300 tables 60 records
-int stmt_funcb1(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 9000000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[60*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 60;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 60;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 60;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 60;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 60;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 60;
-
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 60;
-
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 60;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 60;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 60;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-  unsigned long long starttime = getCurrentTime();
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 3000; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-
-    ++id;
-  }
-
-  unsigned long long endtime = getCurrentTime();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-//1table 18000 reocrds
-int stmt_funcb2(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[18000];
-      int8_t v1[18000];
-      int16_t v2[18000];
-      int32_t v4[18000];
-      int64_t v8[18000];
-      float f4[18000];
-      double f8[18000];
-      char bin[18000][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(18000 * sizeof(int));
-  
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 3000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 18000);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 18000);
-
-  for (int i = 0; i < 18000; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 30000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[18000*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 18000;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 18000;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 18000;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 18000;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 18000;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 18000;
-
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 18000;
-
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 18000;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 18000;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 18000;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-  unsigned long long starttime = getCurrentTime();
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 10; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-
-      if (taos_stmt_execute(stmt) != 0) {
-        printf("failed to execute insert statement.\n");
-        exit(1);
-      }
-      ++id;
-
-    }
- 
-  }
-
-  unsigned long long endtime = getCurrentTime();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-//disorder
-int stmt_funcb3(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 9000000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[60*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 60;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 60;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 60;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 60;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 60;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 60;
-
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 60;
-
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 60;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 60;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 60;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  int64_t ttt = 0;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
-    if (i > 0 && i%60 == 0) {
-      ttt = v.ts[i-1];
-      v.ts[i-1] = v.ts[i-60];
-      v.ts[i-60] = ttt;
-    }
-  }
-
-  unsigned long long starttime = getCurrentTime();
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 3000; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-
-    ++id;
-  }
-
-  unsigned long long endtime = getCurrentTime();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-
-
 //samets
 int stmt_funcb4(TAOS_STMT *stmt) {
   struct {
@@ -3181,7 +2791,7 @@ int stmt_funcb4(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(60 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 60);
   char* no_null = taosMemoryMalloc(sizeof(char) * 60);
 
@@ -3277,7 +2887,7 @@ int stmt_funcb4(TAOS_STMT *stmt) {
     v.ts[i] = tts;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -3307,7 +2917,7 @@ int stmt_funcb4(TAOS_STMT *stmt) {
     ++id;
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -3340,7 +2950,7 @@ int stmt_funcb5(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(18000 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 3000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 3000*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 18000);
   char* no_null = taosMemoryMalloc(sizeof(char) * 18000);
 
@@ -3436,7 +3046,7 @@ int stmt_funcb5(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into m0 values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -3460,7 +3070,7 @@ int stmt_funcb5(TAOS_STMT *stmt) {
  
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -3484,7 +3094,7 @@ int stmt_funcb_ssz1(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(30000 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 3000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 3000*10);
   char* no_null = taosMemoryMalloc(sizeof(int) * 200000);
 
   for (int i = 0; i < 30000; ++i) {
@@ -3514,7 +3124,7 @@ int stmt_funcb_ssz1(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -3545,7 +3155,7 @@ int stmt_funcb_ssz1(TAOS_STMT *stmt) {
  
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -3575,7 +3185,7 @@ int stmt_funcb_s1(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(60 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 60);
   char* no_null = taosMemoryMalloc(sizeof(char) * 60);
 
@@ -3671,7 +3281,7 @@ int stmt_funcb_s1(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -3702,7 +3312,7 @@ int stmt_funcb_s1(TAOS_STMT *stmt) {
  
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -3737,7 +3347,7 @@ int stmt_funcb_sc1(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(60 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 60);
   char* no_null = taosMemoryMalloc(sizeof(char) * 60);
 
@@ -3833,7 +3443,7 @@ int stmt_funcb_sc1(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -3864,7 +3474,7 @@ int stmt_funcb_sc1(TAOS_STMT *stmt) {
     }
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -3895,7 +3505,7 @@ int stmt_funcb_sc2(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(60 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 900000*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 60);
   char* no_null = taosMemoryMalloc(sizeof(char) * 60);
 
@@ -3991,7 +3601,7 @@ int stmt_funcb_sc2(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -4024,7 +3634,7 @@ int stmt_funcb_sc2(TAOS_STMT *stmt) {
  
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -4055,7 +3665,7 @@ int stmt_funcb_sc3(TAOS_STMT *stmt) {
   
   int *lb = taosMemoryMalloc(60 * sizeof(int));
   
-  TAOS_MULTI_BIND *params = taosMemoryCalloc(1, sizeof(TAOS_MULTI_BIND) * 60*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 60*10);
   char* is_null = taosMemoryMalloc(sizeof(char) * 60);
   char* no_null = taosMemoryMalloc(sizeof(char) * 60);
 
@@ -4152,7 +3762,7 @@ int stmt_funcb_sc3(TAOS_STMT *stmt) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
 
   char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
@@ -4181,7 +3791,7 @@ int stmt_funcb_sc3(TAOS_STMT *stmt) {
     exit(1);
   }
 
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
 
   taosMemoryFree(v.ts);  
@@ -4192,15 +3802,12 @@ int stmt_funcb_sc3(TAOS_STMT *stmt) {
 
   return 0;
 }
+#endif
 
-
-void check_result(TAOS     *taos, char *tname, int printr, int expected) {
+void prepareCheckResultImpl(TAOS     *taos, char *tname, bool printr, int expected) {
   char sql[255] = "SELECT * FROM ";
   TAOS_RES *result;
 
-  //FORCE NO PRINT
-  printr = 0;
-
   strcat(sql, tname);
 
   result = taos_query(taos, sql);
@@ -4229,9 +3836,9 @@ void check_result(TAOS     *taos, char *tname, int printr, int expected) {
   }
   
   if (rows == expected) {
-    printf("%d rows are fetched as expectation\n", rows);
+    printf("%d rows are fetched as expected from %s\n", rows, tname);
   } else {
-    printf("!!!expect %d rows, but %d rows are fetched\n", expected, rows);
+    printf("!!!expect %d rows, but %d rows are fetched from %s\n", expected, rows, tname);
     exit(1);
   }
 
@@ -4240,6 +3847,22 @@ void check_result(TAOS     *taos, char *tname, int printr, int expected) {
 }
 
 
+void prepareCheckResult(TAOS     *taos) {
+  char buf[32];
+  for (int32_t t = 0; t< gCurCase->tblNum; ++t) {
+    if (gCurCase->tblNum > 1) {
+      sprintf(buf, "t%d", t);
+    } else {
+      sprintf(buf, "t%d", 0);
+    }
+
+    prepareCheckResultImpl(taos, buf, gCaseCtrl.printRes, gCurCase->rowNum * gExecLoopTimes);
+  }
+
+  gExecLoopTimes = 1;
+}
+
+
 
 //120table 60 record each table
 int sql_perf1(TAOS     *taos) {
@@ -4263,7 +3886,7 @@ int sql_perf1(TAOS     *taos) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  int64_t starttime = taosGetTimestampUs();
   for (int i = 0; i < 3000; ++i) {
       result = taos_query(taos, sql[i]);
       int code = taos_errno(result);
@@ -4275,7 +3898,7 @@ int sql_perf1(TAOS     *taos) {
 
     taos_free_result(result);
   }
-  unsigned long long endtime = getCurrentTime();
+  int64_t endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%.1f useconds\n", 3000*120*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*120*60));
 
   for (int i = 0; i < 3000; i++) {
@@ -4291,7 +3914,7 @@ int sql_perf1(TAOS     *taos) {
 
 //one table 60 records one time
 int sql_perf_s1(TAOS     *taos) {
-  char **sql = taosMemoryCalloc(1, sizeof(char*) * 360000);
+  char **sql = calloc(1, sizeof(char*) * 360000);
   TAOS_RES *result;
 
   for (int i = 0; i < 360000; i++) {
@@ -4316,7 +3939,7 @@ int sql_perf_s1(TAOS     *taos) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
   for (int i = 0; i < 360000; ++i) {
       result = taos_query(taos, sql[i]);
       int code = taos_errno(result);
@@ -4328,7 +3951,7 @@ int sql_perf_s1(TAOS     *taos) {
 
     taos_free_result(result);
   }
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%.1f useconds\n", 3000*120*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*120*60));
 
   for (int i = 0; i < 360000; i++) {
@@ -4363,7 +3986,7 @@ int sql_s_perf1(TAOS     *taos) {
   }
 
 
-  unsigned long long starttime = getCurrentTime();
+  unsigned long long starttime = taosGetTimestampUs();
   for (int i = 0; i < 3000; ++i) {
       result = taos_query(taos, sql[i]);
       int code = taos_errno(result);
@@ -4375,7 +3998,7 @@ int sql_s_perf1(TAOS     *taos) {
 
     taos_free_result(result);
   }
-  unsigned long long endtime = getCurrentTime();
+  unsigned long long endtime = taosGetTimestampUs();
   printf("insert total %d records, used %u seconds, avg:%.1f useconds\n", 3000*120*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*120*60));
 
   for (int i = 0; i < 3000; i++) {
@@ -4385,8 +4008,131 @@ int sql_s_perf1(TAOS     *taos) {
   return 0;
 }
 
+void generateCreateTableSQL(char *buf, int32_t tblIdx, int32_t colNum, int32_t *colList, bool stable) {
+  int32_t blen = 0;
+  blen = sprintf(buf, "create table %s%d ", (stable ? "st" : "t"), tblIdx);
+  if (stable) {
+    blen += sprintf(buf + blen, "tags (");
+    for (int c = 0; c < colNum; ++c) {
+      if (c > 0) {
+        blen += sprintf(buf + blen, ",");
+      }
+      switch (colList[c]) {  
+        case TSDB_DATA_TYPE_BOOL:
+          blen += sprintf(buf + blen, "tbooldata bool");
+          break;
+        case TSDB_DATA_TYPE_TINYINT:
+          blen += sprintf(buf + blen, "ttinydata tinyint");
+          break;
+        case TSDB_DATA_TYPE_SMALLINT:
+          blen += sprintf(buf + blen, "tsmalldata smallint");
+          break;
+        case TSDB_DATA_TYPE_INT:
+          blen += sprintf(buf + blen, "tintdata int");
+          break;
+        case TSDB_DATA_TYPE_BIGINT:
+          blen += sprintf(buf + blen, "tbigdata bigint");
+          break;
+        case TSDB_DATA_TYPE_FLOAT:
+          blen += sprintf(buf + blen, "tfloatdata float");
+          break;
+        case TSDB_DATA_TYPE_DOUBLE:
+          blen += sprintf(buf + blen, "tdoubledata double");
+          break;
+        case TSDB_DATA_TYPE_VARCHAR:
+          blen += sprintf(buf + blen, "tbinarydata binary(%d)", gVarCharSize);
+          break;
+        case TSDB_DATA_TYPE_TIMESTAMP:
+          blen += sprintf(buf + blen, "tts ts");
+          break;
+        case TSDB_DATA_TYPE_NCHAR:
+          blen += sprintf(buf + blen, "tnchardata nchar(%d)", gVarCharSize);
+          break;
+        case TSDB_DATA_TYPE_UTINYINT:
+          blen += sprintf(buf + blen, "tutinydata tinyint unsigned");
+          break;
+        case TSDB_DATA_TYPE_USMALLINT:
+          blen += sprintf(buf + blen, "tusmalldata smallint unsigned");
+          break;
+        case TSDB_DATA_TYPE_UINT:
+          blen += sprintf(buf + blen, "tuintdata int unsigned");
+          break;
+        case TSDB_DATA_TYPE_UBIGINT:
+          blen += sprintf(buf + blen, "tubigdata bigint unsigned");
+          break;
+        default:
+          printf("invalid col type:%d", colList[c]);
+          exit(1);
+      }      
+    }
 
-void prepare(TAOS     *taos, int bigsize, int createChildTable) {
+    blen += sprintf(buf + blen, ")");    
+  }
+
+  blen += sprintf(buf + blen, " (");
+  
+  for (int c = 0; c < colNum; ++c) {
+    if (c > 0) {
+      blen += sprintf(buf + blen, ",");
+    }
+  
+    switch (colList[c]) {  
+      case TSDB_DATA_TYPE_BOOL:
+        blen += sprintf(buf + blen, "booldata bool");
+        break;
+      case TSDB_DATA_TYPE_TINYINT:
+        blen += sprintf(buf + blen, "tinydata tinyint");
+        break;
+      case TSDB_DATA_TYPE_SMALLINT:
+        blen += sprintf(buf + blen, "smalldata smallint");
+        break;
+      case TSDB_DATA_TYPE_INT:
+        blen += sprintf(buf + blen, "intdata int");
+        break;
+      case TSDB_DATA_TYPE_BIGINT:
+        blen += sprintf(buf + blen, "bigdata bigint");
+        break;
+      case TSDB_DATA_TYPE_FLOAT:
+        blen += sprintf(buf + blen, "floatdata float");
+        break;
+      case TSDB_DATA_TYPE_DOUBLE:
+        blen += sprintf(buf + blen, "doubledata double");
+        break;
+      case TSDB_DATA_TYPE_VARCHAR:
+        blen += sprintf(buf + blen, "binarydata binary(%d)", gVarCharSize);
+        break;
+      case TSDB_DATA_TYPE_TIMESTAMP:
+        blen += sprintf(buf + blen, "ts timestamp");
+        break;
+      case TSDB_DATA_TYPE_NCHAR:
+        blen += sprintf(buf + blen, "nchardata nchar(%d)", gVarCharSize);
+        break;
+      case TSDB_DATA_TYPE_UTINYINT:
+        blen += sprintf(buf + blen, "utinydata tinyint unsigned");
+        break;
+      case TSDB_DATA_TYPE_USMALLINT:
+        blen += sprintf(buf + blen, "usmalldata smallint unsigned");
+        break;
+      case TSDB_DATA_TYPE_UINT:
+        blen += sprintf(buf + blen, "uintdata int unsigned");
+        break;
+      case TSDB_DATA_TYPE_UBIGINT:
+        blen += sprintf(buf + blen, "ubigdata bigint unsigned");
+        break;
+      default:
+        printf("invalid col type:%d", colList[c]);
+        exit(1);
+    }      
+  }
+
+  blen += sprintf(buf + blen, ")");
+
+  if (gCaseCtrl.printCreateTblSql) {
+    printf("Create Table SQL:%s\n", buf);
+  }
+}
+
+void prepare(TAOS     *taos, int32_t colNum, int32_t *colList, int autoCreate) {
   TAOS_RES *result;
   int      code;
 
@@ -4405,15 +4151,11 @@ void prepare(TAOS     *taos, int bigsize, int createChildTable) {
   result = taos_query(taos, "use demo");
   taos_free_result(result);
 
-  if (createChildTable) {
+  if (!autoCreate) {
     // create table
-    for (int i = 0 ; i < 300; i++) {
+    for (int i = 0 ; i < 10; i++) {
       char buf[1024];
-      if (bigsize) {
-        sprintf(buf, "create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), bin2 binary(40))", i) ;
-      } else {
-        sprintf(buf, "create table m%d (ts timestamp, b int)", i) ;
-      }
+      generateCreateTableSQL(buf, i, colNum, colList, false);
       result = taos_query(taos, buf);
       code = taos_errno(result);
       if (code != 0) {
@@ -4425,12 +4167,7 @@ void prepare(TAOS     *taos, int bigsize, int createChildTable) {
     }
   } else {
     char buf[1024];
-    if (bigsize) {
-      sprintf(buf, "create stable stb1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), bin2 binary(40))" 
-        " tags(id1 int, id2 bool, id3 tinyint, id4 smallint, id5 bigint, id6 float, id7 double, id8 binary(40), id9 nchar(40))") ;
-    } else {
-      sprintf(buf, "create stable stb1 (ts timestamp, b int) tags(id1 int, id2 bool, id3 tinyint, id4 smallint, id5 bigint, id6 float, id7 double, id8 binary(40), id9 nchar(40))") ;
-    }
+    generateCreateTableSQL(buf, 1, colNum, colList, true);
     
     result = taos_query(taos, buf);
     code = taos_errno(result);
@@ -4444,652 +4181,135 @@ void prepare(TAOS     *taos, int bigsize, int createChildTable) {
 
 }
 
+void* runcase(TAOS *taos) {
+  TAOS_STMT *stmt = NULL;
+  int32_t caseIdx = 0;
 
+  for (int32_t i = 0; i < sizeof(gCase)/sizeof(gCase[0]); ++i) {
+    CaseCfg cfg = gCase[i];
+    gCurCase = &cfg;
 
-void preparem(TAOS     *taos, int bigsize, int idx) {
-  TAOS_RES *result;
-  int      code;
-  char dbname[32],sql[255];
-
-  sprintf(dbname, "demo%d", idx);
-  sprintf(sql, "drop database %s", dbname);
-  
-
-  result = taos_query(taos, sql); 
-  taos_free_result(result);
-
-  sprintf(sql, "create database %s keep 36500", dbname);
-  result = taos_query(taos, sql);
-  code = taos_errno(result);
-  if (code != 0) {
-    printf("failed to create database, reason:%s\n", taos_errstr(result));
-    taos_free_result(result);
-    exit(1);
-  }
-  taos_free_result(result);
-
-  sprintf(sql, "use %s", dbname);
-  result = taos_query(taos, sql);
-  taos_free_result(result);
-  
-  // create table
-  for (int i = 0 ; i < 300; i++) {
-    char buf[1024];
-    if (bigsize) {
-      sprintf(buf, "create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), bin2 binary(40))", i) ;
-    } else {
-      sprintf(buf, "create table m%d (ts timestamp, b int)", i) ;
+    if ((gCaseCtrl.bindColTypeNum || gCaseCtrl.bindColNum) && (gCurCase->colNum != gFullColNum)) {
+      continue;
     }
-    result = taos_query(taos, buf);
-    code = taos_errno(result);
-    if (code != 0) {
-      printf("failed to create table, reason:%s\n", taos_errstr(result));
-      taos_free_result(result);
-      exit(1);
+
+    printf("* Case %d - %s Begin *\n", caseIdx, gCurCase->caseDesc);
+
+    if (gCaseCtrl.runTimes) {
+      gCurCase->runTimes = gCaseCtrl.runTimes;
     }
-    taos_free_result(result);
+    
+    if (gCaseCtrl.rowNum) {
+      gCurCase->rowNum = gCaseCtrl.rowNum;
+    }
+    
+    if (gCurCase->fullCol) {
+      gCurCase->bindColNum = gCurCase->colNum;
+    }
+
+    gCurCase->bindNullNum = gCaseCtrl.bindNullNum;
+    gCurCase->autoCreate = gCaseCtrl.autoCreate;
+    if (gCaseCtrl.bindColNum) {
+      gCurCase->bindColNum = gCaseCtrl.bindColNum;
+      gCurCase->fullCol = false;
+    }
+    if (gCaseCtrl.bindRowNum) {
+      gCurCase->bindRowNum = gCaseCtrl.bindRowNum;
+    }
+    if (gCaseCtrl.bindColTypeNum) {
+      gCurCase->bindColNum = gCaseCtrl.bindColTypeNum;
+      gCurCase->fullCol = false;
+    }
+    
+    for (int32_t n = 0; n < gCurCase->runTimes; ++n) {
+      prepare(taos, gCurCase->colNum, gCurCase->colList, gCurCase->autoCreate);
+      
+      stmt = taos_stmt_init(taos);
+      if (NULL == stmt) {
+        printf("taos_stmt_init failed, error:%s\n", taos_stmt_errstr(stmt));
+        exit(1);
+      }
+
+      (*gCurCase->runFn)(stmt);
+
+      prepareCheckResult(taos);
+
+      taos_stmt_close(stmt);
+    }
+    
+    printf("* Case %d - %s End *\n", caseIdx, gCurCase->caseDesc);
+
+    caseIdx++;
   }
 
-}
-
-
-
-//void runcase(TAOS     *taos, int idx) {
-void* runcase(void *par) {
-  T_par* tpar = (T_par *)par;
-  TAOS *taos = tpar->taos;
-  int idx = tpar->idx;
-  
-  TAOS_STMT *stmt;
-
-  (void)idx;
-
-
-#if 1
-    prepare(taos, 1, 1);
-  
-    stmt = taos_stmt_init(taos);
-  
-    printf("10t+10records+specifycol start\n");
-    stmt_scol_func1(stmt);
-    printf("10t+10records+specifycol end\n");
-    printf("check result start\n");
-    check_result(taos, "m0", 1, 10);
-    check_result(taos, "m1", 1, 10);
-    check_result(taos, "m2", 1, 10);
-    check_result(taos, "m3", 1, 10);
-    check_result(taos, "m4", 1, 10);
-    check_result(taos, "m5", 1, 10);
-    check_result(taos, "m6", 1, 10);
-    check_result(taos, "m7", 1, 10);
-    check_result(taos, "m8", 1, 10);
-    check_result(taos, "m9", 1, 10);
-    printf("check result end\n");
-    taos_stmt_close(stmt);
-#endif
-
-
-#if 1
-    prepare(taos, 1, 1);
-  
-    stmt = taos_stmt_init(taos);
-  
-    printf("1t+100records+specifycol start\n");
-    stmt_scol_func2(stmt);
-    printf("1t+100records+specifycol end\n");
-    printf("check result start\n");
-    check_result(taos, "m0", 1, 100);
-    printf("check result end\n");
-    taos_stmt_close(stmt);
-#endif
-
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("300t+10r+bm+specifycol start\n");
-  stmt_scol_func3(stmt);
-  printf("300t+10r+bm+specifycol end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 20);
-  check_result(taos, "m1", 1, 20);
-  check_result(taos, "m111", 1, 20);  
-  check_result(taos, "m223", 1, 20);
-  check_result(taos, "m299", 1, 20);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("10t+2r+bm+specifycol start\n");
-  stmt_scol_func4(stmt);
-  printf("10t+2r+bm+specifycol end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 20);
-  check_result(taos, "m1", 1, 20);
-  check_result(taos, "m2", 1, 20);
-  check_result(taos, "m3", 1, 20);
-  check_result(taos, "m4", 1, 20);
-  check_result(taos, "m5", 1, 20);
-  check_result(taos, "m6", 1, 20);
-  check_result(taos, "m7", 1, 20);
-  check_result(taos, "m8", 1, 20);
-  check_result(taos, "m9", 1, 20);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("10t+10records start\n");
-  stmt_func1(stmt);
-  printf("10t+10records end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 10);
-  check_result(taos, "m1", 1, 10);
-  check_result(taos, "m2", 1, 10);
-  check_result(taos, "m3", 1, 10);
-  check_result(taos, "m4", 1, 10);
-  check_result(taos, "m5", 1, 10);
-  check_result(taos, "m6", 1, 10);
-  check_result(taos, "m7", 1, 10);
-  check_result(taos, "m8", 1, 10);
-  check_result(taos, "m9", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-  
-#endif
-
-#if 1
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("10t+[0,1,2...9]records start\n");
-  stmt_func2(stmt);
-  printf("10t+[0,1,2...9]records end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 0);
-  check_result(taos, "m1", 0, 100);
-  check_result(taos, "m2", 0, 200);
-  check_result(taos, "m3", 0, 300);
-  check_result(taos, "m4", 0, 400);
-  check_result(taos, "m5", 0, 500);
-  check_result(taos, "m6", 0, 600);
-  check_result(taos, "m7", 0, 700);
-  check_result(taos, "m8", 0, 800);
-  check_result(taos, "m9", 0, 900);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-  
-#endif
-
-#if 1
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("10t+[0,100,200...900]records start\n");
-  stmt_func3(stmt);
-  printf("10t+[0,100,200...900]records end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 0);
-  check_result(taos, "m1", 0, 100);
-  check_result(taos, "m2", 0, 200);
-  check_result(taos, "m3", 0, 300);
-  check_result(taos, "m4", 0, 400);
-  check_result(taos, "m5", 0, 500);
-  check_result(taos, "m6", 0, 600);
-  check_result(taos, "m7", 0, 700);
-  check_result(taos, "m8", 0, 800);
-  check_result(taos, "m9", 0, 900);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-  
-#endif
-
-
-#if 1 
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("300t+60r+bm start\n");
-  stmt_funcb1(stmt);
-  printf("300t+60r+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb1 start\n");
-  stmt_funcb_autoctb1(stmt);
-  printf("1t+10r+bm+autoctb1 end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb2 start\n");
-  stmt_funcb_autoctb2(stmt);
-  printf("1t+10r+bm+autoctb2 end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb3 start\n");
-  stmt_funcb_autoctb3(stmt);
-  printf("1t+10r+bm+autoctb3 end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb4 start\n");
-  stmt_funcb_autoctb4(stmt);
-  printf("1t+10r+bm+autoctb4 end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-#endif
-
-
-#if 1 
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb+e1 start\n");
-  stmt_funcb_autoctb_e1(stmt);
-  printf("1t+10r+bm+autoctb+e1 end\n");
-  printf("check result start\n");
-  //check_result(taos, "m0", 1, 0);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb+e2 start\n");
-  stmt_funcb_autoctb_e2(stmt);
-  printf("1t+10r+bm+autoctb+e2 end\n");
-  printf("check result start\n");
-  //check_result(taos, "m0", 1, 0);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb+e3 start\n");
-  stmt_funcb_autoctb_e3(stmt);
-  printf("1t+10r+bm+autoctb+e3 end\n");
-  printf("check result start\n");
-  //check_result(taos, "m0", 1, 0);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb+e4 start\n");
-  stmt_funcb_autoctb_e4(stmt);
-  printf("1t+10r+bm+autoctb+e4 end\n");
-  printf("check result start\n");
-  //check_result(taos, "m0", 1, 0);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 0);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+10r+bm+autoctb+e5 start\n");
-  stmt_funcb_autoctb_e5(stmt);
-  printf("1t+10r+bm+autoctb+e5 end\n");
-  printf("check result start\n");
-  //check_result(taos, "m0", 1, 0);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+18000r+bm start\n");
-  stmt_funcb2(stmt);
-  printf("1t+18000r+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("300t+60r+disorder+bm start\n");
-  stmt_funcb3(stmt);
-  printf("300t+60r+disorder+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("300t+60r+samets+bm start\n");
-  stmt_funcb4(stmt);
-  printf("300t+60r+samets+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 1);
-  check_result(taos, "m1", 0, 1);
-  check_result(taos, "m111", 0, 1);  
-  check_result(taos, "m223", 0, 1);
-  check_result(taos, "m299", 0, 1);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-#endif
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+18000r+nodyntable+bm start\n");
-  stmt_funcb5(stmt);
-  printf("1t+18000r+nodyntable+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1 
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("300t+60r+bm+sc start\n");
-  stmt_funcb_sc1(stmt);
-  printf("300t+60r+bm+sc end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-#endif
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+60r+bm+sc start\n");
-  stmt_funcb_sc2(stmt);
-  printf("1t+60r+bm+sc end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-#if 1  
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("10t+[1...10]r+bm+sc start\n");
-  stmt_funcb_sc3(stmt);
-  printf("10t+[1...10]r+bm+sc end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 1, 1);
-  check_result(taos, "m1", 1, 2);
-  check_result(taos, "m2", 1, 3);
-  check_result(taos, "m3", 1, 4);
-  check_result(taos, "m4", 1, 5);
-  check_result(taos, "m5", 1, 6);
-  check_result(taos, "m6", 1, 7);
-  check_result(taos, "m7", 1, 8);
-  check_result(taos, "m8", 1, 9);
-  check_result(taos, "m9", 1, 10);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1 
-  prepare(taos, 1, 1);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+60r+bm start\n");
-  stmt_funcb_s1(stmt);
-  printf("1t+60r+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m111", 0, 180000);  
-  check_result(taos, "m223", 0, 180000);
-  check_result(taos, "m299", 0, 180000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
-
-#if 1
-  prepare(taos, 1, 1);
-
-  (void)stmt;
-  printf("120t+60r+sql start\n");
-  sql_perf1(taos);
-  printf("120t+60r+sql end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m34", 0, 180000);  
-  check_result(taos, "m67", 0, 180000);
-  check_result(taos, "m99", 0, 180000);
-  printf("check result end\n");
-#endif  
-
-#if 1
-  prepare(taos, 1, 1);
-
-  (void)stmt;
-  printf("1t+60r+sql start\n");
-  sql_perf_s1(taos);
-  printf("1t+60r+sql end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 180000);
-  check_result(taos, "m1", 0, 180000);
-  check_result(taos, "m34", 0, 180000);  
-  check_result(taos, "m67", 0, 180000);
-  check_result(taos, "m99", 0, 180000);
-  printf("check result end\n");
-#endif  
-
-
-#if 1 
-  preparem(taos, 0, idx);
-
-  stmt = taos_stmt_init(taos);
-
-  printf("1t+30000r+bm start\n");
-  stmt_funcb_ssz1(stmt);
-  printf("1t+30000r+bm end\n");
-  printf("check result start\n");
-  check_result(taos, "m0", 0, 300000);
-  check_result(taos, "m1", 0, 300000);
-  check_result(taos, "m111", 0, 300000);  
-  check_result(taos, "m223", 0, 300000);
-  check_result(taos, "m299", 0, 300000);
-  printf("check result end\n");
-  taos_stmt_close(stmt);
-
-#endif
-
   printf("test end\n");
 
   return NULL;
 
 }
 
+void runAll(TAOS *taos) {
+  printf("Normal Test\n");
+  runcase(taos);
+
+  printf("Null Test\n");
+  gCaseCtrl.bindNullNum = 1;
+  runcase(taos);
+  gCaseCtrl.bindNullNum = 0;
+
+  printf("Bind Row Test\n");
+  gCaseCtrl.bindRowNum = 1;
+  runcase(taos);
+  gCaseCtrl.bindRowNum = 0;
+
+  printf("Row Num Test\n");
+  gCaseCtrl.rowNum = 1000;
+  gCaseCtrl.printRes = false;
+  runcase(taos);
+  gCaseCtrl.rowNum = 0;
+  gCaseCtrl.printRes = true;
+
+  printf("Runtimes Test\n");
+  gCaseCtrl.runTimes = 2;
+  runcase(taos);
+  gCaseCtrl.runTimes = 0;
+
+  printf("Check Param Test\n");
+  gCaseCtrl.checkParamNum = true;
+  runcase(taos);
+  gCaseCtrl.checkParamNum = false;
+
+  printf("Bind Col Num Test\n");
+  gCaseCtrl.bindColNum = 6;
+  runcase(taos);
+  gCaseCtrl.bindColNum = 0;
+
+  printf("Bind Col Type Test\n");
+  gCaseCtrl.bindColTypeNum = tListLen(bindColTypeList);
+  gCaseCtrl.bindColTypeList = bindColTypeList;  
+  runcase(taos);
+}
+
 int main(int argc, char *argv[])
 {
-  TAOS     *taos[4];
+  TAOS     *taos = NULL;
 
+  srand(time(NULL));
+  
   // connect to server
   if (argc < 2) {
     printf("please input server ip \n");
     return 0;
   }
 
-  taos[0] = taos_connect(argv[1], "root", "taosdata", NULL, 0);
+  taos = taos_connect(argv[1], "root", "taosdata", NULL, 0);
   if (taos == NULL) {
     printf("failed to connect to db, reason:%s\n", taos_errstr(taos));
     exit(1);
   }   
 
-  taos[1] = taos_connect(argv[1], "root", "taosdata", NULL, 0);
-  if (taos == NULL) {
-    printf("failed to connect to db, reason:%s\n", taos_errstr(taos));
-    exit(1);
-  }   
+  runAll(taos);
 
-  taos[2] = taos_connect(argv[1], "root", "taosdata", NULL, 0);
-  if (taos == NULL) {
-    printf("failed to connect to db, reason:%s\n", taos_errstr(taos));
-    exit(1);
-  }   
-
-  taos[3] = taos_connect(argv[1], "root", "taosdata", NULL, 0);
-  if (taos == NULL) {
-    printf("failed to connect to db, reason:%s\n", taos_errstr(taos));
-    exit(1);
-  }     
-
-  TdThread *pThreadList = (TdThread *) taosMemoryCalloc(sizeof(TdThread), 4);
-
-  TdThreadAttr thattr;
-  taosThreadAttrInit(&thattr);
-  taosThreadAttrSetDetachState(&thattr, PTHREAD_CREATE_JOINABLE);
-  T_par par[4];
-
-  par[0].taos = taos[0];
-  par[0].idx = 0;
-  par[1].taos = taos[1];
-  par[1].idx = 1;
-  par[2].taos = taos[2];
-  par[2].idx = 2;
-  par[3].taos = taos[3];
-  par[3].idx = 3;
-  
-  taosThreadCreate(&(pThreadList[0]), &thattr, runcase, (void *)&par[0]);
-  //taosThreadCreate(&(pThreadList[1]), &thattr, runcase, (void *)&par[1]);
-  //taosThreadCreate(&(pThreadList[2]), &thattr, runcase, (void *)&par[2]);
-  //taosThreadCreate(&(pThreadList[3]), &thattr, runcase, (void *)&par[3]);
-
-  while(1) {
-    taosSsleep(1);
-  }
   return 0;
 }
 
diff --git a/tests/script/api/makefile b/tests/script/api/makefile
index 92d0a89b0f..46a172cc3a 100644
--- a/tests/script/api/makefile
+++ b/tests/script/api/makefile
@@ -4,18 +4,14 @@
 ROOT=./
 TARGET=exe
 LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt
-CFLAGS = -O0 -g -Wall -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
+CFLAGS = -O0 -g -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
 	-Wno-char-subscripts -D_REENTRANT -Wno-format -D_REENTRANT -DLINUX \
-	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
-	-fsanitize=address
+	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 -Wno-sign-conversion
 
 all: $(TARGET)
 
 exe:
 	gcc $(CFLAGS) ./batchprepare.c  -o $(ROOT)batchprepare  $(LFLAGS)
-	gcc $(CFLAGS) ./stmtBatchTest.c -o $(ROOT)stmtBatchTest $(LFLAGS)
-	gcc $(CFLAGS) ./stmtTest.c -o $(ROOT)stmtTest $(LFLAGS)
-	gcc $(CFLAGS) ./stmt_function.c -o $(ROOT)stmt_function $(LFLAGS)
 
 clean:
 	rm $(ROOT)batchprepare