diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 5dbd417938..2c67cafdf5 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -1921,19 +1921,19 @@ TAOS* taos_connect_auth(const char* ip, const char* user, const char* auth, cons
   return NULL;
 }
 
-TAOS* taos_connect_l(const char* ip, int ipLen, const char* user, int userLen, const char* pass, int passLen,
-                     const char* db, int dbLen, uint16_t port) {
-  char ipStr[TSDB_EP_LEN] = {0};
-  char dbStr[TSDB_DB_NAME_LEN] = {0};
-  char userStr[TSDB_USER_LEN] = {0};
-  char passStr[TSDB_PASSWORD_LEN] = {0};
-
-  tstrncpy(ipStr, ip, TMIN(TSDB_EP_LEN - 1, ipLen));
-  tstrncpy(userStr, user, TMIN(TSDB_USER_LEN - 1, userLen));
-  tstrncpy(passStr, pass, TMIN(TSDB_PASSWORD_LEN - 1, passLen));
-  tstrncpy(dbStr, db, TMIN(TSDB_DB_NAME_LEN - 1, dbLen));
-  return taos_connect(ipStr, userStr, passStr, dbStr, port);
-}
+//TAOS* taos_connect_l(const char* ip, int ipLen, const char* user, int userLen, const char* pass, int passLen,
+//                     const char* db, int dbLen, uint16_t port) {
+//  char ipStr[TSDB_EP_LEN] = {0};
+//  char dbStr[TSDB_DB_NAME_LEN] = {0};
+//  char userStr[TSDB_USER_LEN] = {0};
+//  char passStr[TSDB_PASSWORD_LEN] = {0};
+//
+//  tstrncpy(ipStr, ip, TMIN(TSDB_EP_LEN - 1, ipLen));
+//  tstrncpy(userStr, user, TMIN(TSDB_USER_LEN - 1, userLen));
+//  tstrncpy(passStr, pass, TMIN(TSDB_PASSWORD_LEN - 1, passLen));
+//  tstrncpy(dbStr, db, TMIN(TSDB_DB_NAME_LEN - 1, dbLen));
+//  return taos_connect(ipStr, userStr, passStr, dbStr, port);
+//}
 
 void doSetOneRowPtr(SReqResultInfo* pResultInfo) {
   for (int32_t i = 0; i < pResultInfo->numOfCols; ++i) {
diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index 0864116e36..d5cca55701 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -538,7 +538,7 @@ static int32_t smlParseTableName(SArray *tags, char *childTableName, char *tbnam
       // handle child table name
       if (childTableNameLen == tag->keyLen && strncmp(tag->key, tbnameKey, tag->keyLen) == 0) {
         (void)memset(childTableName, 0, TSDB_TABLE_NAME_LEN);
-        tstrncpy(childTableName, tag->value, TMIN(TSDB_TABLE_NAME_LEN, tag->length));
+        tstrncpy(childTableName, tag->value, TMIN(TSDB_TABLE_NAME_LEN, tag->length + 1));
         if (tsSmlDot2Underline) {
           smlStrReplace(childTableName, strlen(childTableName));
         }