morrySnow opened a new pull request, #17787:
URL: https://github.com/apache/doris/pull/17787
# Proposed changes
Issue Number: close #xxx
## Problem summary
support syntax delete using, this syntax only support UNIQUE KEY model
use the result of `t2` join `t3` to romve rows from `t1`
```sql
-- create t1, t2, t3 tables
CREATE TABLE t1
(id INT, c1 BIGINT, c2 STRING, c3 DOUBLE, c4 DATE)
UNIQUE KEY (id)
DISTRIBUTED BY HASH (id)
PROPERTIES('replication_num'='1', "function_column.sequence_col" = "c4");
CREATE TABLE t2
(id INT, c1 BIGINT, c2 STRING, c3 DOUBLE, c4 DATE)
DISTRIBUTED BY HASH (id)
PROPERTIES('replication_num'='1');
CREATE TABLE t3
(id INT)
DISTRIBUTED BY HASH (id)
PROPERTIES('replication_num'='1');
-- insert data
INSERT INTO t1 VALUES
(1, 1, '1', 1.0, '2000-01-01'),
(2, 2, '2', 2.0, '2000-01-02'),
(3, 3, '3', 3.0, '2000-01-03');
INSERT INTO t2 VALUES
(1, 10, '10', 10.0, '2000-01-10'),
(2, 20, '20', 20.0, '2000-01-20'),
(3, 30, '30', 30.0, '2000-01-30'),
(4, 4, '4', 4.0, '2000-01-04'),
(5, 5, '5', 5.0, '2000-01-05');
INSERT INTO t3 VALUES
(1),
(4),
(5);
-- remove rows from t1
DELETE FROM t1
USING t2 INNER JOIN t3 ON t2.id = t3.id
WHERE t1.id = t2.id;
```
the expect result is only remove the row where id = 1 in table t1
```
+----+----+----+--------+------------+
| id | c1 | c2 | c3 | c4 |
+----+----+----+--------+------------+
| 2 | 2 | 2 | 2.0 | 2000-01-02 |
| 3 | 3 | 3 | 3.0 | 2000-01-03 |
+----+----+----+--------+------------+
```
## Checklist(Required)
* [ ] Does it affect the original behavior
* [ ] Has unit tests been added
* [ ] Has document been added or modified
* [ ] Does it need to update dependencies
* [ ] Is this PR support rollback (If NO, please explain WHY)
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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