mrhhsg opened a new pull request, #23971:
URL: https://github.com/apache/doris/pull/23971
## Proposed changes
Schema:
```sql
create table t1
(k1 bigint, k2 bigint)
ENGINE=OLAP
DUPLICATE KEY(k1, k2)
COMMENT 'OLAP'
DISTRIBUTED BY HASH(k2) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1",
"is_being_synced" = "false",
"storage_format" = "V2",
"light_schema_change" = "true",
"disable_auto_compaction" = "false",
"enable_single_replica_compaction" = "false"
);
create table t3
(k1 bigint, k2 bigint)
ENGINE=OLAP
DUPLICATE KEY(k1, k2)
COMMENT 'OLAP'
DISTRIBUTED BY HASH(k2) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1",
"is_being_synced" = "false",
"storage_format" = "V2",
"light_schema_change" = "true",
"disable_auto_compaction" = "false",
"enable_single_replica_compaction" = "false"
);
```
Data:
```sql
insert into t1 values (1,null),(null,1),(1,2), (null,2),(1,3), (2,4), (2,5),
(3,3), (3,4), (20,2), (22,3), (24,4),(null,null);
insert into t3 values (1,null),(null,1),(1,4), (1,2), (null,3), (2,4),
(3,7), (3,9),(null,null),(5,1);
```
Query:
```sql
select t1.* from t1 where not exists ( select k1 from t3 where t1.k2 <
t3.k2 );
```
Result:
```
Empty set
```
Expect result:
```
+------+------+
| k1 | k2 |
+------+------+
| NULL | NULL |
| 1 | NULL |
+------+------+
```
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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