From 0201348bbe1089710c3af53e66029996d11495ac Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Tue, 11 Apr 2023 15:47:27 +0800
Subject: [PATCH] add test cases

---
 source/libs/executor/src/scanoperator.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index ea834e90ca..f0827886a0 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -484,8 +484,8 @@ int32_t addTagPseudoColumnData(SReadHandle* pHandle, const SExprInfo* pExpr, int
   int32_t code = 0;
 
   // backup the rows
-  int32_t backupRows = (rows == 1) ? rows : pBlock->info.rows;
-  pBlock->info.rows = rows;
+  int32_t backupRows = pBlock->info.rows;
+  pBlock->info.rows = (rows < pBlock->info.rows) ? pBlock->info.rows : rows;
 
   bool            freeReader = false;
   STableCachedVal val = {0};