From d76117d8304d30b16772e0b1a1341a2b22f22b4d Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Tue, 22 Jun 2021 23:47:35 +0800
Subject: [PATCH] [td-225]fix bug by regression test.

---
 src/query/src/qExecutor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index b5960b9e58..9b356d57b8 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -1306,7 +1306,7 @@ static void doHashGroupbyAgg(SOperatorInfo* pOperator, SGroupbyOperatorInfo *pIn
     }
 
     if (IS_VAR_DATA_TYPE(type)) {
-      if(varDataLen(val) == varDataLen(pInfo->prevData) && memcmp(pInfo->prevData, val, varDataLen(val)) == 0) {
+      if(varDataLen(val) == varDataLen(pInfo->prevData) && memcmp(varDataVal(pInfo->prevData), varDataVal(val), varDataLen(val)) == 0) {
         num++;
         continue;
       }
-- 
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