qzsee opened a new issue #6525:
URL: https://github.com/apache/incubator-doris/issues/6525
**Describe the bug**
DDL
```sql
create table A(a1 bigint,a2 bigint)
ENGINE=OLAP
DISTRIBUTED BY HASH(a1) BUCKETS 1
PROPERTIES (
"replication_num" = "1"
);
insert into A values(1,1),
(2,2),
(3,3),
(4,4),
(5,5);
create table B(b1 bigint,b2 bigint)
ENGINE=OLAP
DISTRIBUTED BY HASH(b1) BUCKETS 1
PROPERTIES (
"replication_num" = "1"
);
insert into B values(2,1),
(3,2),
(4,3),
(5,4);
create table C(c1 bigint)
ENGINE=OLAP
DISTRIBUTED BY HASH(c1) BUCKETS 1
PROPERTIES (
"replication_num" = "1"
);
insert into C values(1),
(2),
(3),
(4);
```
Join query
```sql
select
t1.a1,
t2.b2,
sum(t1.a2)
from A t1
left join (
select b1,b2 from B
) t2
on t1.a1=t2.b1
join (
select c1 from C
) t3
on t2.b2 = t3.c1
group by
t1.a1,
t2.b2
```
Execute the SQL multiple times
Result1
```sql
+------+------+----------------+
| a1 | b2 | sum(`t1`.`a2`) |
+------+------+----------------+
| 3 | 2 | 3 |
| 2 | 1 | 2 |
| 4 | 3 | 4 |
+------+------+----------------+
```
Result2
```sql
+------+------+----------------+
| a1 | b2 | sum(`t1`.`a2`) |
+------+------+----------------+
| 3 | 2 | 3 |
| 2 | 1 | 2 |
| 4 | 3 | 4 |
| 5 | 4 | 5 |
+------+------+----------------+
```
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