From 1d9514d6d8e582cee34e3f0f3a9b0195f013d7cb Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Mon, 12 Dec 2022 14:28:08 +0800
Subject: [PATCH] refactor(query): add an assert.

---
 source/libs/executor/src/timewindowoperator.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 30b7f6b8fb..b2ace0fbc0 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -1027,9 +1027,10 @@ SResultRowPosition addToOpenWindowList(SResultRowInfo* pResultRowInfo, const SRe
 int64_t* extractTsCol(SSDataBlock* pBlock, const SIntervalAggOperatorInfo* pInfo) {
   TSKEY* tsCols = NULL;
 
-  if (pBlock->pDataBlock != NULL) {
+  if (pBlock->pDataBlock != NULL && pBlock->info.dataLoad == 1) {
     SColumnInfoData* pColDataInfo = taosArrayGet(pBlock->pDataBlock, pInfo->primaryTsIndex);
     tsCols = (int64_t*)pColDataInfo->pData;
+    ASSERT(tsCols[0] != 0);
 
     // no data in primary ts
     if (tsCols[0] == 0 && tsCols[pBlock->info.rows - 1] == 0) {