From 91fa5f752dc707e928f7ad5d663513ab9f3acfa2 Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Tue, 27 Jul 2021 23:48:15 +0800
Subject: [PATCH] [TD-4335]<feature> group by multi column

---
 src/query/src/qExecutor.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 28be77af18..b7a3603454 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -1454,6 +1454,9 @@ static bool buildGroupbyInfo(const SSDataBlock *pSDataBlock, const SGroupbyExpr
 
   for (int32_t k = 0; k < pGroupbyExpr->numOfGroupCols; ++k) {
     SColIndex* pColIndex = taosArrayGet(pGroupbyExpr->columnInfo, k);
+    if (TSDB_COL_IS_TAG(pColIndex->flag)) {
+      continue;
+    }
     for (int32_t i = 0; i < pSDataBlock->info.numOfCols; ++i) {
       SColumnInfoData* pColInfo = taosArrayGet(pSDataBlock->pDataBlock, i);
       if (pColInfo->info.colId == pColIndex->colId) {
-- 
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