From b19eacff8eb9c56fe4f0cb42868e15546afeda36 Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Tue, 6 Jul 2021 23:19:19 +0800
Subject: [PATCH] [TD-4335]<feature> group by multi column

---
 src/query/src/qExecutor.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 5e404b904d..1d6920ac7e 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -3687,10 +3687,8 @@ void setParamForStableStddevByColData(SQueryRuntimeEnv* pRuntimeEnv, SQLFunction
         break;
       }
       offset += pDataInfo->bytes;
-      if (idx == taosArrayGetSize(pInfo->pGroupbyDataInfo) - 1) {
-        continue;
-      }
     }
+    if (val == NULL) { continue; }
 
     // TODO use hash to speedup this loop
     int32_t numOfGroup = (int32_t)taosArrayGetSize(pRuntimeEnv->prevResult);
-- 
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