diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 9e71a7421a..d48d7d5ea1 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -2920,11 +2920,11 @@ int32_t mergeIntoGroupResultImpl(SQInfo *pQInfo, SArray *pGroup) {
     STableQueryInfo *item = taosArrayGetP(pGroup, i);
 
     SIDList list = getDataBufPagesIdList(pRuntimeEnv->pResultBuf, TSDB_TABLEID(item->pTable)->tid);
-    pageList = list;
-    tid = TSDB_TABLEID(item->pTable)->tid;
 
     if (taosArrayGetSize(list) > 0 && item->windowResInfo.size > 0) {
       pTableList[numOfTables++] = item;
+      tid = TSDB_TABLEID(item->pTable)->tid;
+      pageList = list;
     }
   }