From b160a7944af0cae9f479156a26d49c922f4bed10 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Thu, 25 Nov 2021 16:08:54 +0800
Subject: [PATCH] count(tbname): forbidden count(tag)

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

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index da903b4ffd..c89ab92146 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -3568,7 +3568,7 @@ static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery, bool
       return false;
     }
 
-    if (functionId == TSDB_FUNC_COUNT && pExpr1->base.colInfo.colId == TSDB_TBNAME_COLUMN_INDEX) {
+    if (functionId == TSDB_FUNC_COUNT && (pExpr1->base.colInfo.colId == TSDB_TBNAME_COLUMN_INDEX || TSDB_COL_IS_TAG(pExpr1->base.colInfo.flag))) {
       ++countTbname;
     }
   }
-- 
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