From 82bd8a560f0f522f96de5065ee0fc6f6bcef7d9f Mon Sep 17 00:00:00 2001
From: slzhou <slzhou@taosdata.com>
Date: Thu, 30 Jun 2022 17:28:49 +0800
Subject: [PATCH] fix: reserved column should not be copied

---
 source/libs/executor/src/executorimpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 95782ce001..e2e281d877 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -1348,7 +1348,7 @@ void extractQualifiedTupleByFilterResult(SSDataBlock* pBlock, const int8_t* rowR
       SColumnInfoData* pSrc = taosArrayGet(px->pDataBlock, i);
       SColumnInfoData* pDst = taosArrayGet(pBlock->pDataBlock, i);
       // it is a reserved column for scalar function, and no data in this column yet.
-      if (pDst->pData == NULL) {
+      if (pDst->pData == NULL || pSrc->pData == NULL) {
         continue;
       }