From 6313d9258ddfdf37c88d1fb95366df4b621872e7 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Fri, 11 Mar 2022 12:44:25 +0800
Subject: [PATCH] [TD-11216]<feature>: Time window related keywords add
 _qstart/_qstop/_qduration

---
 src/client/src/tscSQLParser.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index f305f7b6b0..121f45dd96 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -2520,7 +2520,9 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
           functionId = TSDB_FUNC_TAGPRJ;
           colType    = TSDB_COL_TAG;
         } else {
-          if (!timeWindowQuery) {
+          if (!timeWindowQuery && (index.columnIndex == TSDB_TSWIN_START_COLUMN_INDEX ||
+              index.columnIndex == TSDB_TSWIN_STOP_COLUMN_INDEX ||
+              index.columnIndex == TSDB_TSWIN_DURATION_COLUMN_INDEX)) {
             return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg7);
           }
           colSchema  = *tGetTimeWindowColumnSchema(index.columnIndex);
-- 
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