diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 596300f053f98e0ef69e47d6707f0c13fe66ecfa..89cf7edd2ed9411009032fc1e7314c210683d89f 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -2490,6 +2490,7 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
         /*SExprInfo* pExpr = */ tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_TAGPRJ, &index, &colSchema,
                                                          TSDB_COL_TAG, getNewResColId(pCmd));
       }
+      pQueryInfo->type |= TSDB_QUERY_TYPE_PROJECTION_QUERY;
     } else {
       STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, index.tableIndex);
       STableMeta*     pTableMeta = pTableMetaInfo->pTableMeta;
diff --git a/tests/script/general/parser/nestquery.sim b/tests/script/general/parser/nestquery.sim
index a721e19b99f95274c658497a0fcbeb097903edf2..3653efe0be35340c3aa68b678f63de7f0a0dda10 100644
--- a/tests/script/general/parser/nestquery.sim
+++ b/tests/script/general/parser/nestquery.sim
@@ -941,6 +941,17 @@ if $data02 != 0 then
   return -1
 endi
 
+print ==============> TD-11969
+sql create database test11969;
+sql use test11969;
+sql create stable st (ts timestamp , id int ) tags (ind int );
+sql insert into sub1 using st tags(1) values(now ,1);
+sql insert into sub1 using st tags(1) values(now ,2);
+sql insert into sub2 using st tags(2) values(now ,3);
+sql insert into sub2 using st tags(2) values(now ,4);
+sql_error select max(ts_inter) ,tbname from (select elapsed(ts) ts_inter ,tbname from st interval (1s) group by tbname) order by ts
+sql drop database test11969
+
 print ==========================================> TD-11097
 sql create database td11097
 sql use td11097
@@ -1144,4 +1155,5 @@ if $data51 != @43@ then
   return -1 
 endi
 sql drop database td11097
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT