diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 5214d52589bb666e093418d801e97fdbcb46536a..9016737c4025bc4a05b3c0a324278b54fd5db957 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -475,10 +475,6 @@ static SResultRow* doSetResultOutBufByKey(SQueryRuntimeEnv* pRuntimeEnv, SResult
     pResultRowInfo->curPos = pResultRowInfo->size;
     pResultRowInfo->pResult[pResultRowInfo->size++] = pResult;
 
-    if (pResultRowInfo->curPos > 0) {
-      assert(pResultRowInfo->pResult[pResultRowInfo->curPos]->win.skey > pResultRowInfo->pResult[pResultRowInfo->curPos-1]->win.skey);
-    }
-
     int64_t index = pResultRowInfo->curPos;
     SET_RES_EXT_WINDOW_KEY(pRuntimeEnv->keyBuf, pData, bytes, tid, pResultRowInfo);
     taosHashPut(pRuntimeEnv->pResultRowListSet, pRuntimeEnv->keyBuf, GET_RES_EXT_WINDOW_KEY_LEN(bytes), &index, POINTER_BYTES);