diff --git a/src/query/src/qUtil.c b/src/query/src/qUtil.c
index 4cb61d1f4827388869a76016ed2f99a5aec10154..b7a7fd28e9dc2f013457e22446ff7bc41d3fef6c 100644
--- a/src/query/src/qUtil.c
+++ b/src/query/src/qUtil.c
@@ -369,7 +369,7 @@ int32_t getNumOfTotalRes(SGroupResInfo* pGroupResInfo) {
     return 0;
   }
 
-  return taosArrayGetSize(pGroupResInfo->pRows);
+  return (int32_t) taosArrayGetSize(pGroupResInfo->pRows);
 }
 
 static int64_t getNumOfResultWindowRes(SQueryRuntimeEnv* pRuntimeEnv, SResultRow *pResultRow) {