From 9d6dbf473699bf20c0d46d7a35003648152c333c Mon Sep 17 00:00:00 2001
From: Liu Jicong <liujicong@qq.com>
Date: Wed, 4 Aug 2021 01:15:29 +0800
Subject: [PATCH] [TD-5694]<fix>: fix

---
 src/common/src/tdataformat.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index c4f3dda7b4..3a43a90b76 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -25,7 +25,7 @@ static void tdMergeTwoDataCols(SDataCols *target, SDataCols *src1, int *iter1, i
 int tdAllocMemForCol(SDataCol *pCol, int maxPoints) {
   int spaceNeeded = pCol->bytes * maxPoints;
   if(IS_VAR_DATA_TYPE(pCol->type)) {
-    spaceNeeded += sizeof(VarDataOffsetT) * maxPoints + sizeof(VarDataLenT) * maxPoints;
+    spaceNeeded += sizeof(VarDataOffsetT) * maxPoints;
   }
   if(pCol->spaceSize < spaceNeeded) {
     void* ptr = realloc(pCol->pData, spaceNeeded);
@@ -37,11 +37,11 @@ int tdAllocMemForCol(SDataCol *pCol, int maxPoints) {
     } else {
       pCol->pData = ptr;
       pCol->spaceSize = spaceNeeded;
-      if(IS_VAR_DATA_TYPE(pCol->type)) {
-        pCol->dataOff = POINTER_SHIFT(ptr, pCol->bytes * maxPoints);
-      }
     }
   }
+  if(IS_VAR_DATA_TYPE(pCol->type)) {
+    pCol->dataOff = POINTER_SHIFT(pCol->pData, pCol->bytes * maxPoints);
+  }
   return 0;
 }
 
-- 
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