From 472d3a347dab4500e6228a56d713fa2a77bd01dc Mon Sep 17 00:00:00 2001
From: Hongze Cheng <hzcheng@taosdata.com>
Date: Fri, 2 Dec 2022 19:55:36 +0800
Subject: [PATCH] fix a bug

---
 source/common/src/tdataformat.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index eba30ff506..0bb283708d 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -2061,8 +2061,8 @@ int32_t tColDataCopy(SColData *pColDataFrom, SColData *pColData, xMallocFn xMall
   }
 
   // value
-  if (pColData->nVal) {
-    pColData->pData = xMalloc(arg, pColData->nVal);
+  if (pColData->nData) {
+    pColData->pData = xMalloc(arg, pColData->nData);
     if (pColData->pData == NULL) {
       code = TSDB_CODE_OUT_OF_MEMORY;
       goto _exit;
-- 
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