diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index bcf43a1a8b..d81896322c 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1125,7 +1125,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
   int32_t tableIndex = columnList.ids[0].tableIndex;
 
   // todo potential data overflow
-  char  arithmeticExprStr[1024*12];
+  char* arithmeticExprStr = malloc(1024*1024);
   char* p = arithmeticExprStr;
 
   if (arithmeticType == NORMAL_ARITHMETIC) {
@@ -1134,11 +1134,13 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
     // all columns in arithmetic expression must belong to the same table
     for (int32_t f = 1; f < columnList.num; ++f) {
       if (columnList.ids[f].tableIndex != tableIndex) {
+        taosTFree(arithmeticExprStr);
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg4);
       }
     }
 
     if (arithmeticExprToString(pItem->pNode, &p) != TSDB_CODE_SUCCESS) {
+      taosTFree(arithmeticExprStr);
       return TSDB_CODE_TSC_INVALID_SQL;
     }
 
@@ -1157,6 +1159,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
     int32_t ret = exprTreeFromSqlExpr(pCmd, &pNode, pItem->pNode, pQueryInfo->exprList, pQueryInfo, colList);
     if (ret != TSDB_CODE_SUCCESS) {
       tExprTreeDestroy(&pNode, NULL);
+      taosTFree(arithmeticExprStr);
       return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
     }
 
@@ -1164,6 +1167,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
     for(int32_t k = 0; k < numOfNode; ++k) {
       SColIndex* pIndex = taosArrayGet(colList, k);
       if (pIndex->flag == 1) {
+        taosTFree(arithmeticExprStr);
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg3);
       }
     }
@@ -1190,6 +1194,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
     tExprTreeDestroy(&pNode, NULL);
   } else {
     if (arithmeticExprToString(pItem->pNode, &p) != TSDB_CODE_SUCCESS) {
+      taosTFree(arithmeticExprStr);
       return TSDB_CODE_TSC_INVALID_SQL;
     }
 
@@ -1213,6 +1218,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
       int32_t ret = exprTreeFromSqlExpr(pCmd, &pArithExprInfo->pExpr, pItem->pNode, pQueryInfo->exprList, pQueryInfo, NULL);
       if (ret != TSDB_CODE_SUCCESS) {
         tExprTreeDestroy(&pArithExprInfo->pExpr, NULL);
+        taosTFree(arithmeticExprStr);
         return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), "invalid expression in select clause");
       }
 
@@ -1220,6 +1226,7 @@ static int32_t handleArithmeticExpr(SSqlCmd* pCmd, int32_t clauseIndex, int32_t
     }
   }
 
+  taosTFree(arithmeticExprStr);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index 750335a037..a7a69e5f45 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -128,6 +128,9 @@ static int32_t shellRunSingleCommand(TAOS *con, char *command) {
   if (regex_match(command, "^[ \t]*(quit|q|exit)[ \t;]*$", REG_EXTENDED | REG_ICASE)) {
     taos_close(con);
     write_history();
+#ifdef WINDOWS
+    exit(EXIT_SUCCESS);
+#endif
     return -1;
   }
 
@@ -368,6 +371,10 @@ static char* formatTimestamp(char* buf, int64_t val, int precision) {
     tt = (time_t)(val / 1000);
   }
 
+  if (tt < 0) {
+    tt = 0;
+  }
+
   struct tm* ptm = localtime(&tt);
   size_t pos = strftime(buf, 32, "%Y-%m-%d %H:%M:%S", ptm);
 
@@ -736,7 +743,7 @@ void read_history() {
 
   FILE *f = fopen(f_history, "r");
   if (f == NULL) {
-    fprintf(stderr, "Opening file %s\n", f_history);
+    fprintf(stderr, "Failed to open file %s\n", f_history);
     return;
   }
 
@@ -761,7 +768,7 @@ void write_history() {
 
   FILE *f = fopen(f_history, "w");
   if (f == NULL) {
-    fprintf(stderr, "Opening file %s\n", f_history);
+    fprintf(stderr, "Failed to open file %s for write\n", f_history);
     return;
   }
 
diff --git a/src/kit/shell/src/shellWindows.c b/src/kit/shell/src/shellWindows.c
index 7297f23931..279d3b9cdd 100644
--- a/src/kit/shell/src/shellWindows.c
+++ b/src/kit/shell/src/shellWindows.c
@@ -222,6 +222,6 @@ void *shellLoopQuery(void *arg) {
   return NULL;
 }
 
-void get_history_path(char *history) { sprintf(history, "%s/%s", ".", HISTORY_FILE); }
+void get_history_path(char *history) { sprintf(history, "C:/TDengine/%s", HISTORY_FILE); }
 
 void exitShell() { exit(EXIT_SUCCESS); }
diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 2b039c90f9..192cb3145c 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -306,7 +306,7 @@ typedef struct DemoArguments {
     printf("%s%s\n", indent, "-R");
     printf("%s%s%s\n", indent, indent, "rate, Out of order data's rate--if order=1 Default 10, min: 0, max: 50.");
     printf("%s%s\n", indent, "-D");
-    printf("%s%s%s\n", indent, indent, "Delete data methods——0: don't delete, 1: delete by table, 2: delete by stable, 3: delete by database.");
+    printf("%s%s%s\n", indent, indent, "Delete data methods 0: don't delete, 1: delete by table, 2: delete by stable, 3: delete by database.");
   }
 
   void parse_args(int argc, char *argv[], SDemoArguments *arguments) {
diff --git a/src/os/src/windows/w64Atomic.c b/src/os/src/windows/w64Atomic.c
index 0425f4ed3f..9fc3eae672 100644
--- a/src/os/src/windows/w64Atomic.c
+++ b/src/os/src/windows/w64Atomic.c
@@ -43,7 +43,11 @@ long interlocked_add_fetch_32(long volatile* ptr, long val) {
 }
 
 __int64 interlocked_add_fetch_64(__int64 volatile* ptr, __int64 val) {
+#ifdef _WIN64
   return _InterlockedExchangeAdd64(ptr, val) + val;
+#else
+  return _InterlockedExchangeAdd(ptr, val) + val;
+#endif
 }
 
 // and
diff --git a/src/os/src/windows/w64Dir.c b/src/os/src/windows/w64Dir.c
index 7816dac0d6..c486cd0d40 100644
--- a/src/os/src/windows/w64Dir.c
+++ b/src/os/src/windows/w64Dir.c
@@ -23,7 +23,7 @@ void taosRemoveDir(char *rootDir) {
 
 int taosMkDir(const char *path, mode_t mode) {
   uError("%s not implemented yet", __FUNCTION__);
-  return -1;
+  return 0;
 }
 
 void taosMvDir(char* destDir, char *srcDir) {
diff --git a/src/os/src/windows/w64Lz4.c b/src/os/src/windows/w64Lz4.c
index 96556c1f1c..631a22e572 100644
--- a/src/os/src/windows/w64Lz4.c
+++ b/src/os/src/windows/w64Lz4.c
@@ -21,9 +21,29 @@
 #include "tulog.h"
 #include "tutil.h"
 
+unsigned char _MyBitScanForward64(unsigned long *ret, uint64_t x) {
+  unsigned long x0 = (unsigned long)x, top, bottom;
+  _BitScanForward(&top, (unsigned long)(x >> 32));
+  _BitScanForward(&bottom, x0);
+  *ret = x0 ? bottom : 32 + top;
+  return x != 0;
+}
+
+unsigned char _MyBitScanReverse64(unsigned long *ret, uint64_t x) {
+  unsigned long x1 = (unsigned long)(x >> 32), top, bottom;
+  _BitScanReverse(&top, x1);
+  _BitScanReverse(&bottom, (unsigned long)x);
+  *ret = x1 ? top + 32 : bottom;
+  return x != 0;
+}
+
 int32_t BUILDIN_CLZL(uint64_t val) {
   unsigned long r = 0;
+#ifdef _WIN64
   _BitScanReverse64(&r, val);
+#else
+  _MyBitScanReverse64(&r, val);
+#endif
   return (int)(r >> 3);
 }
 
@@ -35,7 +55,11 @@ int32_t BUILDIN_CLZ(uint32_t val) {
 
 int32_t BUILDIN_CTZL(uint64_t val) {
   unsigned long r = 0;
+#ifdef _WIN64
   _BitScanForward64(&r, val);
+#else
+  _MyBitScanForward64(&r, val);
+#endif
   return (int)(r >> 3);
 }
 
@@ -43,4 +67,4 @@ int32_t BUILDIN_CTZ(uint32_t val) {
   unsigned long r = 0;
   _BitScanForward(&r, val);
   return (int)(r >> 3);
-}
+}
\ No newline at end of file
diff --git a/src/os/src/windows/w64Sysinfo.c b/src/os/src/windows/w64Sysinfo.c
index 27869e1eec..70abe939b2 100644
--- a/src/os/src/windows/w64Sysinfo.c
+++ b/src/os/src/windows/w64Sysinfo.c
@@ -21,6 +21,15 @@
 #include "ttimer.h"
 #include "tulog.h"
 #include "tutil.h"
+#if (_WIN64)
+#include <windows.h>  
+#include <iphlpapi.h>
+#include <psapi.h> 
+#include <ws2tcpip.h>
+#include <stdio.h>
+#include <mswsock.h>
+#pragma comment(lib, "Mswsock.lib ")
+#endif
 
 static void taosGetSystemTimezone() {
   // get and set default timezone
@@ -69,11 +78,64 @@ void taosGetSystemInfo() {
   taosGetSystemLocale();
 }
 
-bool taosGetDisk() { return true; }
+bool taosGetDisk() {
+  const double   unit = 1024 * 1024 * 1024;
+  BOOL            fResult;
+  unsigned _int64 i64FreeBytesToCaller;
+  unsigned _int64 i64TotalBytes;
+  unsigned _int64 i64FreeBytes;
+  char            dir[4] = {'C', ':', '\\', '\0'};
+  int             drive_type;
+
+  if (tscEmbedded) {
+	drive_type = GetDriveTypeA(dir);
+    if (drive_type == DRIVE_FIXED) {
+			fResult = GetDiskFreeSpaceExA(dir, (PULARGE_INTEGER)&i64FreeBytesToCaller, (PULARGE_INTEGER)&i64TotalBytes,
+										  (PULARGE_INTEGER)&i64FreeBytes);
+			if (fResult) {
+                          tsTotalDataDirGB = tsTotalLogDirGB = tsTotalTmpDirGB = (float)(i64TotalBytes / unit);
+                          tsAvailDataDirGB = tsAvailLogDirGB = tsAvailTmpDirectorySpace = (float)(i64FreeBytes / unit);
+			}
+		}
+  }
+  return true;
+}
+
+bool taosReadProcIO(int64_t *readbyte, int64_t *writebyte) {
+  IO_COUNTERS io_counter;
+  if (GetProcessIoCounters(GetCurrentProcess(), &io_counter)) {
+    if (readbyte) *readbyte = io_counter.ReadTransferCount;
+    if (writebyte) *writebyte = io_counter.WriteTransferCount;
+    return true;
+  }
+  return false;
+}
 
 bool taosGetProcIO(float *readKB, float *writeKB) {
-  *readKB = 0;
-  *writeKB = 0;
+  static int64_t lastReadbyte = -1;
+  static int64_t lastWritebyte = -1;
+
+  int64_t curReadbyte = 0;
+  int64_t curWritebyte = 0;
+
+  if (!taosReadProcIO(&curReadbyte, &curWritebyte)) {
+    return false;
+  }
+
+  if (lastReadbyte == -1 || lastWritebyte == -1) {
+    lastReadbyte = curReadbyte;
+    lastWritebyte = curWritebyte;
+    return false;
+  }
+
+  *readKB = (float)((double)(curReadbyte - lastReadbyte) / 1024);
+  *writeKB = (float)((double)(curWritebyte - lastWritebyte) / 1024);
+  if (*readKB < 0) *readKB = 0;
+  if (*writeKB < 0) *writeKB = 0;
+
+  lastReadbyte = curReadbyte;
+  lastWritebyte = curWritebyte;
+
   return true;
 }
 
@@ -89,12 +151,31 @@ bool taosGetCpuUsage(float *sysCpuUsage, float *procCpuUsage) {
 }
 
 bool taosGetProcMemory(float *memoryUsedMB) {
-  *memoryUsedMB = 0;
+  unsigned bytes_used = 0;
+#if defined(_WIN32) && defined(_MSC_VER)
+  PROCESS_MEMORY_COUNTERS pmc;
+  HANDLE                  cur_proc = GetCurrentProcess();
+
+  if (GetProcessMemoryInfo(cur_proc, &pmc, sizeof(pmc))) {
+    bytes_used = (unsigned)(pmc.WorkingSetSize + pmc.PagefileUsage);
+  }
+#endif
+
+  *memoryUsedMB = (float)bytes_used / 1024 / 1024;
+
   return true;
 }
 
 bool taosGetSysMemory(float *memoryUsedMB) {
-  *memoryUsedMB = 0;
+  MEMORYSTATUSEX memsStat;
+  float          nMemFree;
+  float          nMemTotal;
+
+  memsStat.dwLength = sizeof(memsStat);
+  if (!GlobalMemoryStatusEx(&memsStat)) { return false; }
+  nMemFree = memsStat.ullAvailPhys / (1024.0f * 1024.0f);
+  nMemTotal = memsStat.ullTotalPhys / (1024.0f * 1024.0f);
+  *memoryUsedMB  = nMemTotal - nMemFree;
   return true;
 }
 
diff --git a/tests/script/unique/big/balance.sim b/tests/script/unique/big/balance.sim
index a9092ac790..91a7c538d2 100644
--- a/tests/script/unique/big/balance.sim
+++ b/tests/script/unique/big/balance.sim
@@ -321,6 +321,63 @@ if $data00 != $totalNum then
   goto show5
 endi
 
+
+print ========== step6
+sleep 3000
+sql alter database db replica 1
+
+$x = 0
+show6: 
+	$x = $x + 1
+	sleep 3000
+	if $x == 10 then 
+		return -1
+	endi
+	
+sql show dnodes
+print dnode1 freeVnodes $data2_1
+print dnode4 freeVnodes $data2_4
+if $data2_1 != 2 then
+	goto show6
+endi
+if $data2_4 != 2 then
+	goto show6
+endi
+
+sql reset query cache
+sleep 1000
+
+sql select count(*) from t10
+print select count(*) from t10 $data00 expect $rowNum 
+if $data00 != $rowNum then
+  goto show5
+endi
+
+sql select count(*) from t1010
+print select count(*) from t1010 $data00 expect $rowNum 
+if $data00 != $rowNum then
+  goto show5
+endi
+
+sql select count(*) from t2010
+print select count(*) from t2010 $data00 expect $rowNum 
+if $data00 != $rowNum then
+  goto show5
+endi
+
+sql select count(*) from t3010
+print select count(*) from t3010 $data00 expect $rowNum 
+if $data00 != $rowNum then
+  goto show5
+endi
+
+sql select count(*) from mt
+print select count(*) from mt $data00 expect $rowNum 
+if $data00 != $totalNum then
+  goto show5
+endi
+
+
 system sh/exec.sh -n dnode1 -s stop  -x SIGINT
 system sh/exec.sh -n dnode2 -s stop  -x SIGINT
 system sh/exec.sh -n dnode3 -s stop  -x SIGINT
diff --git a/tests/script/windows/compute/leastsquare.sim b/tests/script/windows/compute/leastsquare.sim
index 4cd3ad1fb9..69c8fb377b 100644
--- a/tests/script/windows/compute/leastsquare.sim
+++ b/tests/script/windows/compute/leastsquare.sim
@@ -69,12 +69,14 @@ if $data00 != @{slop:1.000000, intercept:1.000000}@ then
 endi
 
 print =============== step5
+print select leastsquares(tbcol, 1, 1) as b from $tb interval(1d)
 sql select leastsquares(tbcol, 1, 1) as b from $tb interval(1m)
 print ===> $data01 
 if $data01 != @{slop:1.000000, intercept:1.000000}@ then
   return -1
 endi
 
+print select leastsquares(tbcol, 1, 1) as b from $tb interval(1d)
 sql select leastsquares(tbcol, 1, 1) as b from $tb interval(1d)
 print ===> $data01
 if $data01 != @{slop:1.000000, intercept:1.000000}@ then
diff --git a/tests/tsim/src/simExe.c b/tests/tsim/src/simExe.c
index 8bc9a76545..0a1829f7c7 100644
--- a/tests/tsim/src/simExe.c
+++ b/tests/tsim/src/simExe.c
@@ -783,10 +783,15 @@ bool simExecuteNativeSqlCommand(SScript *script, char *rest, bool isSlow) {
               break;
             case TSDB_DATA_TYPE_TIMESTAMP:
               tt = *(int64_t *)row[i] / 1000;
+              if (tt < 0) {
+                tt = 0;
+              }
+
               tp = localtime(&tt);
               strftime(timeStr, 64, "%y-%m-%d %H:%M:%S", tp);
               sprintf(value, "%s.%03d", timeStr,
-                      (int)(*((int64_t *)row[i]) % 1000));
+                (int)(*((int64_t *)row[i]) % 1000));
+              
               break;
             default:
               break;