# Copyright 2023 PingCAP, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Preparation.
mysql> drop table if exists test.t1
mysql> CREATE TABLE test.t1 (a varchar(20) COLLATE utf8mb4_general_ci DEFAULT NULL,id int(11) NOT NULL,PRIMARY KEY (id) /*T![clustered_index] CLUSTERED */) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
mysql> insert into test.t1(a ,id) values('jlsf',1),(null,2),('YmkS',3),('0',4);
mysql> drop table if exists test.t2
mysql> CREATE TABLE test.t2 (a varchar(20) COLLATE utf8mb4_general_ci DEFAULT NULL,b char(20) COLLATE utf8mb4_general_ci DEFAULT NULL,id int(11) NOT NULL,PRIMARY KEY (id) /*T![clustered_index] CLUSTERED */) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
mysql> insert into test.t2(a,b,id) values('yMKs','jlsf',1),('yyds','YmkS',2),('cc',4,3),(null,null,4),('abc',null,5),(null,'df',6);

mysql> alter table test.t1 set tiflash replica 1
mysql> alter table test.t2 set tiflash replica 1

func> wait_table test t1
func> wait_table test t2


mysql> use test; set @@tidb_isolation_read_engines='tiflash'; set @@tidb_enforce_mpp=1; select max(a) from t1 where a in ( select b from t2 where a>b);
+--------+
| max(a) |
+--------+
| YmkS   |
+--------+

# Clean up.
# mysql> drop table if exists test.t1
# mysql> drop table if exists test.t2