Cop Apply operator will not fill correlated column value in late materialization filter condition #49241
Description
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
create table t(id int, value int);
create table t1(id int, value int);
insert into t values(10,5),(9,5),(8,5),(7,5),(6,5),(5,5),(4,5),(3,5),(2,5),(1,5);
insert into t1 values(2,5);
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
alter database set tiflash replica 1;
set tidb_allow_mpp=off;
select (select t.value from t where t.id = t1.id order by t.value limit 1) xx from t1 order by t1.value limit 5;
+------+
| xx |
+------+
| NULL |
+------+
1 row in set (0.02 sec)2. What did you expect to see? (Required)
select (select t.value from t where t.id = t1.id order by t.value limit 1) xx from t1 order by t1.value limit 5;
+------+
| xx |
+------+
| 5 |
+------+
1 row in set (0.01 sec)
3. What did you see instead (Required)
select (select t.value from t where t.id = t1.id order by t.value limit 1) xx from t1 order by t1.value limit 5;
+------+
| xx |
+------+
| NULL |
+------+
1 row in set (0.02 sec)4. What is your TiDB version? (Required)
v7.1.2