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|
--
-- Test INSERT/UPDATE/DELETE RETURNING
--
-- Simple cases
CREATE TEMP TABLE foo (f1 serial, f2 text, f3 int default 42);
INSERT INTO foo (f2,f3)
VALUES ('test', DEFAULT), ('More', 11), (upper('more'), 7+9)
RETURNING *, f1+f3 AS sum;
f1 | f2 | f3 | sum
----+------+----+-----
1 | test | 42 | 43
2 | More | 11 | 13
3 | MORE | 16 | 19
(3 rows)
SELECT * FROM foo;
f1 | f2 | f3
----+------+----
1 | test | 42
2 | More | 11
3 | MORE | 16
(3 rows)
UPDATE foo SET f2 = lower(f2), f3 = DEFAULT RETURNING foo.*, f1+f3 AS sum13;
f1 | f2 | f3 | sum13
----+------+----+-------
1 | test | 42 | 43
2 | more | 42 | 44
3 | more | 42 | 45
(3 rows)
SELECT * FROM foo;
f1 | f2 | f3
----+------+----
1 | test | 42
2 | more | 42
3 | more | 42
(3 rows)
DELETE FROM foo WHERE f1 > 2 RETURNING f3, f2, f1, least(f1,f3);
f3 | f2 | f1 | least
----+------+----+-------
42 | more | 3 | 3
(1 row)
SELECT * FROM foo;
f1 | f2 | f3
----+------+----
1 | test | 42
2 | more | 42
(2 rows)
-- Subplans and initplans in the RETURNING list
INSERT INTO foo SELECT f1+10, f2, f3+99 FROM foo
RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
EXISTS(SELECT * FROM int4_tbl) AS initplan;
f1 | f2 | f3 | subplan | initplan
----+------+-----+---------+----------
11 | test | 141 | t | t
12 | more | 141 | f | t
(2 rows)
UPDATE foo SET f3 = f3 * 2
WHERE f1 > 10
RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
EXISTS(SELECT * FROM int4_tbl) AS initplan;
f1 | f2 | f3 | subplan | initplan
----+------+-----+---------+----------
11 | test | 282 | t | t
12 | more | 282 | f | t
(2 rows)
DELETE FROM foo
WHERE f1 > 10
RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
EXISTS(SELECT * FROM int4_tbl) AS initplan;
f1 | f2 | f3 | subplan | initplan
----+------+-----+---------+----------
11 | test | 282 | t | t
12 | more | 282 | f | t
(2 rows)
-- Joins
UPDATE foo SET f3 = f3*2
FROM int4_tbl i
WHERE foo.f1 + 123455 = i.f1
RETURNING foo.*, i.f1 as "i.f1";
f1 | f2 | f3 | i.f1
----+------+----+--------
1 | test | 84 | 123456
(1 row)
SELECT * FROM foo;
f1 | f2 | f3
----+------+----
2 | more | 42
1 | test | 84
(2 rows)
DELETE FROM foo
USING int4_tbl i
WHERE foo.f1 + 123455 = i.f1
RETURNING foo.*, i.f1 as "i.f1";
f1 | f2 | f3 | i.f1
----+------+----+--------
1 | test | 84 | 123456
(1 row)
SELECT * FROM foo;
f1 | f2 | f3
----+------+----
2 | more | 42
(1 row)
-- Check inheritance cases
CREATE TEMP TABLE foochild (fc int) INHERITS (foo);
INSERT INTO foochild VALUES(123,'child',999,-123);
ALTER TABLE foo ADD COLUMN f4 int8 DEFAULT 99;
SELECT * FROM foo;
f1 | f2 | f3 | f4
-----+-------+-----+----
2 | more | 42 | 99
123 | child | 999 | 99
(2 rows)
SELECT * FROM foochild;
f1 | f2 | f3 | fc | f4
-----+-------+-----+------+----
123 | child | 999 | -123 | 99
(1 row)
UPDATE foo SET f4 = f4 + f3 WHERE f4 = 99 RETURNING *;
f1 | f2 | f3 | f4
-----+-------+-----+------
2 | more | 42 | 141
123 | child | 999 | 1098
(2 rows)
SELECT * FROM foo;
f1 | f2 | f3 | f4
-----+-------+-----+------
2 | more | 42 | 141
123 | child | 999 | 1098
(2 rows)
SELECT * FROM foochild;
f1 | f2 | f3 | fc | f4
-----+-------+-----+------+------
123 | child | 999 | -123 | 1098
(1 row)
UPDATE foo SET f3 = f3*2
FROM int8_tbl i
WHERE foo.f1 = i.q2
RETURNING *;
f1 | f2 | f3 | f4 | q1 | q2
-----+-------+------+------+------------------+-----
123 | child | 1998 | 1098 | 4567890123456789 | 123
(1 row)
SELECT * FROM foo;
f1 | f2 | f3 | f4
-----+-------+------+------
2 | more | 42 | 141
123 | child | 1998 | 1098
(2 rows)
SELECT * FROM foochild;
f1 | f2 | f3 | fc | f4
-----+-------+------+------+------
123 | child | 1998 | -123 | 1098
(1 row)
DELETE FROM foo
USING int8_tbl i
WHERE foo.f1 = i.q2
RETURNING *;
f1 | f2 | f3 | f4 | q1 | q2
-----+-------+------+------+------------------+-----
123 | child | 1998 | 1098 | 4567890123456789 | 123
(1 row)
SELECT * FROM foo;
f1 | f2 | f3 | f4
----+------+----+-----
2 | more | 42 | 141
(1 row)
SELECT * FROM foochild;
f1 | f2 | f3 | fc | f4
----+----+----+----+----
(0 rows)
DROP TABLE foochild;
-- Rules and views
CREATE TEMP VIEW voo AS SELECT f1, f2 FROM foo;
CREATE RULE voo_i AS ON INSERT TO voo DO INSTEAD
INSERT INTO foo VALUES(new.*, 57);
INSERT INTO voo VALUES(11,'zit');
-- fails:
INSERT INTO voo VALUES(12,'zoo') RETURNING *, f1*2;
ERROR: cannot perform INSERT RETURNING on relation "voo"
HINT: You need an unconditional ON INSERT DO INSTEAD rule with a RETURNING clause.
-- fails, incompatible list:
CREATE OR REPLACE RULE voo_i AS ON INSERT TO voo DO INSTEAD
INSERT INTO foo VALUES(new.*, 57) RETURNING *;
ERROR: RETURNING list has too many entries
CREATE OR REPLACE RULE voo_i AS ON INSERT TO voo DO INSTEAD
INSERT INTO foo VALUES(new.*, 57) RETURNING f1, f2;
-- should still work
INSERT INTO voo VALUES(13,'zit2');
-- works now
INSERT INTO voo VALUES(14,'zoo2') RETURNING *;
f1 | f2
----+------
14 | zoo2
(1 row)
SELECT * FROM foo;
f1 | f2 | f3 | f4
----+------+----+-----
2 | more | 42 | 141
11 | zit | 57 | 99
13 | zit2 | 57 | 99
14 | zoo2 | 57 | 99
(4 rows)
SELECT * FROM voo;
f1 | f2
----+------
2 | more
11 | zit
13 | zit2
14 | zoo2
(4 rows)
CREATE OR REPLACE RULE voo_u AS ON UPDATE TO voo DO INSTEAD
UPDATE foo SET f1 = new.f1, f2 = new.f2 WHERE f1 = old.f1
RETURNING f1, f2;
update voo set f1 = f1 + 1 where f2 = 'zoo2';
update voo set f1 = f1 + 1 where f2 = 'zoo2' RETURNING *, f1*2;
f1 | f2 | ?column?
----+------+----------
16 | zoo2 | 32
(1 row)
SELECT * FROM foo;
f1 | f2 | f3 | f4
----+------+----+-----
2 | more | 42 | 141
11 | zit | 57 | 99
13 | zit2 | 57 | 99
16 | zoo2 | 57 | 99
(4 rows)
SELECT * FROM voo;
f1 | f2
----+------
2 | more
11 | zit
13 | zit2
16 | zoo2
(4 rows)
CREATE OR REPLACE RULE voo_d AS ON DELETE TO voo DO INSTEAD
DELETE FROM foo WHERE f1 = old.f1
RETURNING f1, f2;
DELETE FROM foo WHERE f1 = 13;
DELETE FROM foo WHERE f2 = 'zit' RETURNING *;
f1 | f2 | f3 | f4
----+-----+----+----
11 | zit | 57 | 99
(1 row)
SELECT * FROM foo;
f1 | f2 | f3 | f4
----+------+----+-----
2 | more | 42 | 141
16 | zoo2 | 57 | 99
(2 rows)
SELECT * FROM voo;
f1 | f2
----+------
2 | more
16 | zoo2
(2 rows)
-- Try a join case
CREATE TEMP TABLE joinme (f2j text, other int);
INSERT INTO joinme VALUES('more', 12345);
INSERT INTO joinme VALUES('zoo2', 54321);
INSERT INTO joinme VALUES('other', 0);
CREATE TEMP VIEW joinview AS
SELECT foo.*, other FROM foo JOIN joinme ON (f2 = f2j);
SELECT * FROM joinview;
f1 | f2 | f3 | f4 | other
----+------+----+-----+-------
2 | more | 42 | 141 | 12345
16 | zoo2 | 57 | 99 | 54321
(2 rows)
CREATE RULE joinview_u AS ON UPDATE TO joinview DO INSTEAD
UPDATE foo SET f1 = new.f1, f3 = new.f3
FROM joinme WHERE f2 = f2j AND f2 = old.f2
RETURNING foo.*, other;
UPDATE joinview SET f1 = f1 + 1 WHERE f3 = 57 RETURNING *, other + 1;
f1 | f2 | f3 | f4 | other | ?column?
----+------+----+----+-------+----------
17 | zoo2 | 57 | 99 | 54321 | 54322
(1 row)
SELECT * FROM joinview;
f1 | f2 | f3 | f4 | other
----+------+----+-----+-------
2 | more | 42 | 141 | 12345
17 | zoo2 | 57 | 99 | 54321
(2 rows)
SELECT * FROM foo;
f1 | f2 | f3 | f4
----+------+----+-----
2 | more | 42 | 141
17 | zoo2 | 57 | 99
(2 rows)
SELECT * FROM voo;
f1 | f2
----+------
2 | more
17 | zoo2
(2 rows)
-- Check aliased target relation
INSERT INTO foo AS bar DEFAULT VALUES RETURNING *; -- ok
f1 | f2 | f3 | f4
----+----+----+----
4 | | 42 | 99
(1 row)
INSERT INTO foo AS bar DEFAULT VALUES RETURNING foo.*; -- fails, wrong name
ERROR: invalid reference to FROM-clause entry for table "foo"
LINE 1: INSERT INTO foo AS bar DEFAULT VALUES RETURNING foo.*;
^
HINT: Perhaps you meant to reference the table alias "bar".
INSERT INTO foo AS bar DEFAULT VALUES RETURNING bar.*; -- ok
f1 | f2 | f3 | f4
----+----+----+----
5 | | 42 | 99
(1 row)
INSERT INTO foo AS bar DEFAULT VALUES RETURNING bar.f3; -- ok
f3
----
42
(1 row)
|
