mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-19 21:03:51 +00:00
183 lines
3.0 KiB
Plaintext
183 lines
3.0 KiB
Plaintext
/**
|
|
* Based on https://github.com/postgres/postgres/blob/master/src/test/regress/sql/with.sql, license:
|
|
*
|
|
* PostgreSQL Database Management System
|
|
* (formerly known as Postgres, then as Postgres95)
|
|
*
|
|
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
|
*
|
|
* Portions Copyright (c) 1994, The Regents of the University of California
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and its
|
|
* documentation for any purpose, without fee, and without a written agreement
|
|
* is hereby granted, provided that the above copyright notice and this
|
|
* paragraph and the following two paragraphs appear in all copies.
|
|
*
|
|
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
|
|
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
|
|
* LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
|
|
* DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
|
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
|
|
*PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
|
*/
|
|
|
|
--
|
|
-- Tests for common table expressions (WITH query, ... SELECT ...)
|
|
--
|
|
|
|
-- { echoOn }
|
|
|
|
SET enable_analyzer = 1;
|
|
--
|
|
-- test multiple WITH queries
|
|
--
|
|
WITH RECURSIVE
|
|
y AS (SELECT 1 AS id),
|
|
x AS (SELECT * FROM y UNION ALL SELECT id+1 FROM x WHERE id < 5)
|
|
SELECT * FROM x ORDER BY id;
|
|
1
|
|
2
|
|
3
|
|
4
|
|
5
|
|
-- forward reference OK
|
|
WITH RECURSIVE
|
|
x AS (SELECT * FROM y UNION ALL SELECT id+1 FROM x WHERE id < 5),
|
|
y AS (SELECT 1 AS id)
|
|
SELECT * FROM x ORDER BY id;
|
|
1
|
|
2
|
|
3
|
|
4
|
|
5
|
|
WITH RECURSIVE
|
|
x AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM x WHERE id < 5),
|
|
y AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM y WHERE id < 10)
|
|
SELECT y.*, x.* FROM y LEFT JOIN x USING (id) ORDER BY y.id;
|
|
1 1
|
|
2 2
|
|
3 3
|
|
4 4
|
|
5 5
|
|
6 0
|
|
7 0
|
|
8 0
|
|
9 0
|
|
10 0
|
|
WITH RECURSIVE
|
|
x AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM x WHERE id < 5),
|
|
y AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM x WHERE id < 10)
|
|
SELECT y.*, x.* FROM y LEFT JOIN x USING (id) ORDER BY y.id;
|
|
1 1
|
|
2 2
|
|
3 3
|
|
4 4
|
|
5 5
|
|
6 0
|
|
WITH RECURSIVE
|
|
x AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM x WHERE id < 3 ),
|
|
y AS
|
|
(SELECT * FROM x UNION ALL SELECT * FROM x),
|
|
z AS
|
|
(SELECT * FROM x UNION ALL SELECT id+1 FROM z WHERE id < 10)
|
|
SELECT * FROM z ORDER BY id;
|
|
1
|
|
2
|
|
2
|
|
3
|
|
3
|
|
3
|
|
4
|
|
4
|
|
4
|
|
5
|
|
5
|
|
5
|
|
6
|
|
6
|
|
6
|
|
7
|
|
7
|
|
7
|
|
8
|
|
8
|
|
8
|
|
9
|
|
9
|
|
9
|
|
10
|
|
10
|
|
10
|
|
WITH RECURSIVE
|
|
x AS
|
|
(SELECT 1 AS id UNION ALL SELECT id+1 FROM x WHERE id < 3 ),
|
|
y AS
|
|
(SELECT * FROM x UNION ALL SELECT * FROM x),
|
|
z AS
|
|
(SELECT * FROM y UNION ALL SELECT id+1 FROM z WHERE id < 10)
|
|
SELECT * FROM z ORDER BY id;
|
|
1
|
|
1
|
|
2
|
|
2
|
|
2
|
|
2
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
10
|
|
10
|
|
10
|
|
10
|
|
10
|
|
10
|