From d7e01b30c7ba5e67bc71b1387d11376347daecba Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Tue, 18 Oct 2022 19:13:42 +0800
Subject: [PATCH] fix(query): update last_row  callback function.

---
 source/dnode/vnode/src/tsdb/tsdbCacheRead.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
index 791c73047c..38c10e8354 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
@@ -54,7 +54,7 @@ static void saveOneRow(SArray* pRow, SSDataBlock* pBlock, SCacheRowsReader* pRea
           if (IS_VAR_DATA_TYPE(pColVal->colVal.type)) {
             varDataSetLen(p->buf, pColVal->colVal.value.nData);
             memcpy(varDataVal(p->buf), pColVal->colVal.value.pData, pColVal->colVal.value.nData);
-            p->bytes = pColVal->colVal.value.nData;
+            p->bytes = pColVal->colVal.value.nData + VARSTR_HEADER_SIZE;
           } else {
             memcpy(p->buf, &pColVal->colVal.value, pReader->pSchema->columns[slotId].bytes);
             p->bytes = pReader->pSchema->columns[slotId].bytes;