diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index 36126d6468ae75d97d168174e64b0a72c1e070f6..d1df28999d267d9e2c5ce8edc1fda01de9ef77f2 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -802,7 +802,7 @@ static void doAsyncQueryFromParse(SMetaData *pResultMeta, void *param, int32_t c
          tstrerror(code));
 
   if (code == TSDB_CODE_SUCCESS) {
-    //pWrapper->pCatalogReq->forceUpdate = false;
+    // pWrapper->pCatalogReq->forceUpdate = false;
     code = qContinueParseSql(pWrapper->pParseCtx, pWrapper->pCatalogReq, pResultMeta, pQuery);
   }
 
@@ -831,8 +831,8 @@ void continueInsertFromCsv(SSqlCallbackWrapper *pWrapper, SRequestObj *pRequest)
              tstrerror(code), pWrapper->pRequest->requestId);
     destorySqlCallbackWrapper(pWrapper);
     terrno = code;
-    pWrapper->pRequest->code = code;
-    pWrapper->pRequest->body.queryFp(pWrapper->pRequest->body.param, pWrapper->pRequest, code);
+    pRequest->code = code;
+    pRequest->body.queryFp(pRequest->body.param, pRequest, code);
   }
 }
 
@@ -1331,8 +1331,7 @@ int taos_stmt_get_col_fields(TAOS_STMT *stmt, int *fieldNum, TAOS_FIELD_E **fiel
 }
 
 // let stmt to reclaim TAOS_FIELD_E that was allocated by `taos_stmt_get_tag_fields`/`taos_stmt_get_col_fields`
-void taos_stmt_reclaim_fields(TAOS_STMT *stmt, TAOS_FIELD_E *fields)
-{
+void taos_stmt_reclaim_fields(TAOS_STMT *stmt, TAOS_FIELD_E *fields) {
   (void)stmt;
   if (!fields) return;
   taosMemoryFree(fields);
diff --git a/source/common/src/tname.c b/source/common/src/tname.c
index 644b253cc21c243152130a488dc2ebf8ad717d01..2d12204a31362423a4ce5e57f348ee209f099cbf 100644
--- a/source/common/src/tname.c
+++ b/source/common/src/tname.c
@@ -90,10 +90,8 @@ int64_t taosGetIntervalStartTimestamp(int64_t startTime, int64_t slidingTime, in
 SName* toName(int32_t acctId, const char* pDbName, const char* pTableName, SName* pName) {
   pName->type = TSDB_TABLE_NAME_T;
   pName->acctId = acctId;
-  memset(pName->dbname, 0, TSDB_DB_NAME_LEN);
-  strncpy(pName->dbname, pDbName, TSDB_DB_NAME_LEN - 1);
-  memset(pName->tname, 0, TSDB_TABLE_NAME_LEN);
-  strncpy(pName->tname, pTableName, TSDB_TABLE_NAME_LEN - 1);
+  snprintf(pName->dbname, sizeof(pName->dbname), "%s", pDbName);
+  snprintf(pName->tname, sizeof(pName->tname), "%s", pTableName);
   return pName;
 }
 
@@ -316,7 +314,7 @@ static int compareKv(const void* p1, const void* p2) {
 void buildChildTableName(RandTableName* rName) {
   SStringBuilder sb = {0};
   taosStringBuilderAppendStringLen(&sb, rName->stbFullName, rName->stbFullNameLen);
-  if(sb.buf == NULL) return;
+  if (sb.buf == NULL) return;
   taosArraySort(rName->tags, compareKv);
   for (int j = 0; j < taosArrayGetSize(rName->tags); ++j) {
     taosStringBuilderAppendChar(&sb, ',');
diff --git a/source/libs/parser/inc/parToken.h b/source/libs/parser/inc/parToken.h
index fb4b46aa35094fd3ac65171c5499c038eb92d233..642979c471ab7b409bd622de26c2c2deb1879e83 100644
--- a/source/libs/parser/inc/parToken.h
+++ b/source/libs/parser/inc/parToken.h
@@ -175,8 +175,6 @@ _end:
 
 void taosCleanupKeywordsTable();
 
-SToken taosTokenDup(SToken *pToken, char *buf, int32_t len);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/parser/src/parInsertSql.c b/source/libs/parser/src/parInsertSql.c
index 582bb466d2cd00cd3061572217fb0f285577fedf..3c5d4d506a72d9a9e3d8bda482cbf1010c8acb3f 100644
--- a/source/libs/parser/src/parInsertSql.c
+++ b/source/libs/parser/src/parInsertSql.c
@@ -1161,6 +1161,7 @@ static int32_t parseValueTokenImpl(SInsertParseContext* pCxt, const char** pSql,
         return TSDB_CODE_OUT_OF_MEMORY;
       }
       if (!taosMbsToUcs4(pToken->z, pToken->n, (TdUcs4*)pUcs4, pSchema->bytes - VARSTR_HEADER_SIZE, &len)) {
+        taosMemoryFree(pUcs4);
         if (errno == E2BIG) {
           return generateSyntaxErrMsg(&pCxt->msg, TSDB_CODE_PAR_VALUE_TOO_LONG, pSchema->name);
         }
diff --git a/source/libs/parser/src/parInsertUtil.c b/source/libs/parser/src/parInsertUtil.c
index b3018d63b4cf7606aa429dd8a71f07025cf4186f..b8ef7d970df5dd74176f6dcb0b7a8ab478e34129 100644
--- a/source/libs/parser/src/parInsertUtil.c
+++ b/source/libs/parser/src/parInsertUtil.c
@@ -73,8 +73,6 @@ int32_t insCreateSName(SName* pName, SToken* pTableName, int32_t acctId, const c
   char*   p = tableNameGetPosition(pTableName, TS_PATH_DELIMITER[0]);
 
   if (p != NULL) {  // db has been specified in sql string so we ignore current db path
-    assert(*p == TS_PATH_DELIMITER[0]);
-
     int32_t dbLen = p - pTableName->z;
     if (dbLen <= 0) {
       return buildInvalidOperationMsg(pMsgBuf, msg2);
@@ -106,8 +104,6 @@ int32_t insCreateSName(SName* pName, SToken* pTableName, int32_t acctId, const c
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }
 
-    assert(pTableName->n < TSDB_TABLE_FNAME_LEN);
-
     char name[TSDB_TABLE_FNAME_LEN] = {0};
     strncpy(name, pTableName->z, pTableName->n);
     strdequote(name);
diff --git a/source/libs/parser/src/parTokenizer.c b/source/libs/parser/src/parTokenizer.c
index cacb6f3c3be3a6dbf884de757b5f1b40ce361f52..93bfe179f486775111d0f5aa9781b585cb583057 100644
--- a/source/libs/parser/src/parTokenizer.c
+++ b/source/libs/parser/src/parTokenizer.c
@@ -715,14 +715,3 @@ void taosCleanupKeywordsTable() {
     taosHashCleanup(m);
   }
 }
-
-SToken taosTokenDup(SToken* pToken, char* buf, int32_t len) {
-  assert(pToken != NULL && buf != NULL && len > pToken->n);
-
-  strncpy(buf, pToken->z, pToken->n);
-  buf[pToken->n] = 0;
-
-  SToken token = *pToken;
-  token.z = buf;
-  return token;
-}
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index a9a8e4d4c2b8f7dc75b6285dbed5b90ec0e86dd7..0bc4d71d4f370232fce99fedcdb7e2e56a94b8bd 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3902,7 +3902,8 @@ static int32_t checkDbKeepOption(STranslateContext* pCxt, SDatabaseOptions* pOpt
   if (pOptions->keep[0] < TSDB_MIN_KEEP || pOptions->keep[1] < TSDB_MIN_KEEP || pOptions->keep[2] < TSDB_MIN_KEEP ||
       pOptions->keep[0] > tsdbMaxKeep || pOptions->keep[1] > tsdbMaxKeep || pOptions->keep[2] > tsdbMaxKeep) {
     return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_DB_OPTION,
-                                   "Invalid option keep: %" PRId64 ", %" PRId64 ", %" PRId64 " valid range: [%dm, %dm]",
+                                   "Invalid option keep: %" PRId64 ", %" PRId64 ", %" PRId64
+                                   " valid range: [%dm, %" PRId64 "m]",
                                    pOptions->keep[0], pOptions->keep[1], pOptions->keep[2], TSDB_MIN_KEEP, tsdbMaxKeep);
   }
 
@@ -5856,6 +5857,7 @@ static int32_t adjustStreamQueryForExistTable(STranslateContext* pCxt, SCreateSt
   if (TSDB_CODE_SUCCESS == code) {
     code = adjustStreamQueryForExistTableImpl(pCxt, pStmt, pMeta);
   }
+  taosMemoryFree(pMeta);
   return code;
 }
 
@@ -6435,7 +6437,7 @@ int32_t extractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pS
       return extractShowCreateDatabaseResultSchema(numOfCols, pSchema);
     case QUERY_NODE_SHOW_DB_ALIVE_STMT:
     case QUERY_NODE_SHOW_CLUSTER_ALIVE_STMT:
-      return extractShowAliveResultSchema(numOfCols, pSchema);      
+      return extractShowAliveResultSchema(numOfCols, pSchema);
     case QUERY_NODE_SHOW_CREATE_TABLE_STMT:
     case QUERY_NODE_SHOW_CREATE_STABLE_STMT:
       return extractShowCreateTableResultSchema(numOfCols, pSchema);
@@ -6540,7 +6542,7 @@ static int32_t createOperatorNode(EOperatorType opType, const char* pColName, SN
     nodesDestroyNode((SNode*)pOper);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  strcpy(((SColumnNode*)pOper->pLeft)->colName, pColName);
+  snprintf(((SColumnNode*)pOper->pLeft)->colName, sizeof(((SColumnNode*)pOper->pLeft)->colName), "%s", pColName);
 
   *pOp = (SNode*)pOper;
   return TSDB_CODE_SUCCESS;
@@ -7956,7 +7958,7 @@ static int32_t setQuery(STranslateContext* pCxt, SQuery* pQuery) {
     case QUERY_NODE_DESCRIBE_STMT:
     case QUERY_NODE_SHOW_CREATE_DATABASE_STMT:
     case QUERY_NODE_SHOW_DB_ALIVE_STMT:
-    case QUERY_NODE_SHOW_CLUSTER_ALIVE_STMT:    
+    case QUERY_NODE_SHOW_CLUSTER_ALIVE_STMT:
     case QUERY_NODE_SHOW_CREATE_TABLE_STMT:
     case QUERY_NODE_SHOW_CREATE_STABLE_STMT:
     case QUERY_NODE_SHOW_LOCAL_VARIABLES_STMT:
diff --git a/source/libs/parser/test/mockCatalogService.cpp b/source/libs/parser/test/mockCatalogService.cpp
index ac801149f58f2aa838fae9748e92483e09e36f33..0d46b63278722bbeaaff35d2aca72953a81b5994 100644
--- a/source/libs/parser/test/mockCatalogService.cpp
+++ b/source/libs/parser/test/mockCatalogService.cpp
@@ -33,7 +33,6 @@ std::unique_ptr<MockCatalogService> g_mockCatalogService;
 class TableBuilder : public ITableBuilder {
  public:
   virtual TableBuilder& addColumn(const string& name, int8_t type, int32_t bytes) {
-    assert(colId_ <= schema()->tableInfo.numOfTags + schema()->tableInfo.numOfColumns);
     SSchema* col = schema()->schema + (colId_ - 1);
     col->type = type;
     col->colId = colId_++;