diff --git a/src/client/src/tscPrepare.c b/src/client/src/tscPrepare.c
index ca887427e060e58f779994389c66230541d97f97..952a29eab4966168ad6a8f017403b6e956133899 100644
--- a/src/client/src/tscPrepare.c
+++ b/src/client/src/tscPrepare.c
@@ -745,7 +745,7 @@ static int doBindBatchParam(STableDataBlocks* pBlock, SParamInfo* param, TAOS_MU
     }
 
     if (!IS_VAR_DATA_TYPE(param->type)) {
-      memcpy(data + param->offset, bind->buffer + bind->buffer_length * i, tDataTypes[param->type].bytes);
+      memcpy(data + param->offset, (char *)bind->buffer + bind->buffer_length * i, tDataTypes[param->type].bytes);
       
       if (param->offset == 0) {
         if (tsCheckTimestamp(pBlock, data + param->offset) != TSDB_CODE_SUCCESS) {
@@ -759,7 +759,7 @@ static int doBindBatchParam(STableDataBlocks* pBlock, SParamInfo* param, TAOS_MU
         return TSDB_CODE_TSC_INVALID_VALUE;
       }
       int16_t bsize = (short)bind->length[i];
-      STR_WITH_SIZE_TO_VARSTR(data + param->offset, bind->buffer + bind->buffer_length * i, bsize);
+      STR_WITH_SIZE_TO_VARSTR(data + param->offset, (char *)bind->buffer + bind->buffer_length * i, bsize);
     } else if (param->type == TSDB_DATA_TYPE_NCHAR) {
       if (bind->length[i] > (uintptr_t)param->bytes) {
         tscError("nchar string length too long, ignore it, max:%d, actual:%d", param->bytes, (int32_t)bind->length[i]);
@@ -767,8 +767,8 @@ static int doBindBatchParam(STableDataBlocks* pBlock, SParamInfo* param, TAOS_MU
       }
 
       int32_t output = 0;
-      if (!taosMbsToUcs4(bind->buffer + bind->buffer_length * i, bind->length[i], varDataVal(data + param->offset), param->bytes - VARSTR_HEADER_SIZE, &output)) {
-        tscError("convert nchar string to UCS4_LE failed:%s", (char*)(bind->buffer + bind->buffer_length * i));
+      if (!taosMbsToUcs4((char *)bind->buffer + bind->buffer_length * i, bind->length[i], varDataVal(data + param->offset), param->bytes - VARSTR_HEADER_SIZE, &output)) {
+        tscError("convert nchar string to UCS4_LE failed:%s", (char*)((char *)bind->buffer + bind->buffer_length * i));
         return TSDB_CODE_TSC_INVALID_VALUE;
       }
 
@@ -1293,7 +1293,7 @@ int taos_stmt_set_tbname(TAOS_STMT* stmt, const char* name) {
     return TSDB_CODE_TSC_APP_ERROR;
   }
 
-  if (pStmt->last == STMT_INIT && pStmt->last == STMT_BIND && pStmt->last == STMT_BIND_COL) {
+  if (pStmt->last == STMT_INIT || pStmt->last == STMT_BIND || pStmt->last == STMT_BIND_COL) {
     tscError("0x%"PRIx64" settbname status error, last:%d", pSql->self, pStmt->last);
     return TSDB_CODE_TSC_APP_ERROR;
   }
diff --git a/src/query/src/qTokenizer.c b/src/query/src/qTokenizer.c
index 4a4897f5c25d3b42267874341b36accdb8a70510..a16bcd4fc9687c8c758c2fcffe5ac2d38d722626 100644
--- a/src/query/src/qTokenizer.c
+++ b/src/query/src/qTokenizer.c
@@ -562,9 +562,9 @@ uint32_t tSQLGetToken(char* z, uint32_t* tokenId) {
 
 SStrToken tscReplaceStrToken(char **str, SStrToken *token, const char* newToken) {
   char *src = *str;
-  int32_t nsize = strlen(newToken);
-  int32_t size = strlen(*str) - token->n + nsize + 1;
-  int32_t bsize = (uint64_t)token->z - (uint64_t)src;
+  size_t nsize = strlen(newToken);
+  int32_t size = (int32_t)strlen(*str) - token->n + (int32_t)nsize + 1;
+  int32_t bsize = (int32_t)((uint64_t)token->z - (uint64_t)src);
   SStrToken ntoken;
 
   *str = calloc(1, size);
@@ -573,7 +573,7 @@ SStrToken tscReplaceStrToken(char **str, SStrToken *token, const char* newToken)
   strcat(*str, newToken);
   strcat(*str, token->z + token->n);
 
-  ntoken.n = nsize;
+  ntoken.n = (uint32_t)nsize;
   ntoken.z = *str + bsize;
 
   tfree(src);