diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index c583e566b9..e23cd88bb7 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -1067,6 +1067,8 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
 
       pMsg += pCond->len;
     }
+  } else {
+    pQueryMsg->tagCondLen = 0;
   }
 
   if (pQueryInfo->bufLen > 0) {
@@ -1138,6 +1140,7 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
     }
   } else {
     pQueryMsg->udfContentOffset = 0;
+    pQueryMsg->udfContentLen = 0;
   }
 
   memcpy(pMsg, pSql->sqlstr, sqlLen);