335 lines
7.6 KiB
Plaintext
335 lines
7.6 KiB
Plaintext
--
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-- Test INSERT/UPDATE/DELETE RETURNING
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--
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-- Simple cases
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CREATE TEMP TABLE foo (f1 serial, f2 text, f3 int default 42);
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NOTICE: CREATE TABLE will create implicit sequence "foo_f1_seq" for serial column "foo.f1"
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INSERT INTO foo (f2,f3)
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VALUES ('test', DEFAULT), ('More', 11), (upper('more'), 7+9)
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RETURNING *, f1+f3 AS sum;
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f1 | f2 | f3 | sum
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----+------+----+-----
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1 | test | 42 | 43
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2 | More | 11 | 13
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3 | MORE | 16 | 19
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(3 rows)
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SELECT * FROM foo;
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f1 | f2 | f3
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----+------+----
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1 | test | 42
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2 | More | 11
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3 | MORE | 16
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(3 rows)
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UPDATE foo SET f2 = lower(f2), f3 = DEFAULT RETURNING foo.*, f1+f3 AS sum13;
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f1 | f2 | f3 | sum13
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----+------+----+-------
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1 | test | 42 | 43
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2 | more | 42 | 44
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3 | more | 42 | 45
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(3 rows)
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SELECT * FROM foo;
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f1 | f2 | f3
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----+------+----
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1 | test | 42
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2 | more | 42
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3 | more | 42
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(3 rows)
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DELETE FROM foo WHERE f1 > 2 RETURNING f3, f2, f1, least(f1,f3);
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f3 | f2 | f1 | least
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----+------+----+-------
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42 | more | 3 | 3
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3
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----+------+----
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1 | test | 42
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2 | more | 42
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(2 rows)
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-- Subplans and initplans in the RETURNING list
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INSERT INTO foo SELECT f1+10, f2, f3+99 FROM foo
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RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
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EXISTS(SELECT * FROM int4_tbl) AS initplan;
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f1 | f2 | f3 | subplan | initplan
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----+------+-----+---------+----------
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11 | test | 141 | t | t
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12 | more | 141 | f | t
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(2 rows)
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UPDATE foo SET f3 = f3 * 2
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WHERE f1 > 10
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RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
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EXISTS(SELECT * FROM int4_tbl) AS initplan;
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f1 | f2 | f3 | subplan | initplan
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----+------+-----+---------+----------
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11 | test | 282 | t | t
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12 | more | 282 | f | t
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(2 rows)
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DELETE FROM foo
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WHERE f1 > 10
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RETURNING *, f1+112 IN (SELECT q1 FROM int8_tbl) AS subplan,
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EXISTS(SELECT * FROM int4_tbl) AS initplan;
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f1 | f2 | f3 | subplan | initplan
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----+------+-----+---------+----------
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11 | test | 282 | t | t
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12 | more | 282 | f | t
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(2 rows)
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-- Joins
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UPDATE foo SET f3 = f3*2
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FROM int4_tbl i
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WHERE foo.f1 + 123455 = i.f1
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RETURNING foo.*, i.f1 as "i.f1";
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f1 | f2 | f3 | i.f1
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----+------+----+--------
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1 | test | 84 | 123456
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3
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----+------+----
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2 | more | 42
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1 | test | 84
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(2 rows)
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DELETE FROM foo
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USING int4_tbl i
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WHERE foo.f1 + 123455 = i.f1
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RETURNING foo.*, i.f1 as "i.f1";
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f1 | f2 | f3 | i.f1
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----+------+----+--------
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1 | test | 84 | 123456
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3
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----+------+----
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2 | more | 42
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(1 row)
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-- Check inheritance cases
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CREATE TEMP TABLE foochild (fc int) INHERITS (foo);
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INSERT INTO foochild VALUES(123,'child',999,-123);
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ALTER TABLE foo ADD COLUMN f4 int8 DEFAULT 99;
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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-----+-------+-----+----
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2 | more | 42 | 99
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123 | child | 999 | 99
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(2 rows)
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SELECT * FROM foochild;
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f1 | f2 | f3 | fc | f4
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-----+-------+-----+------+----
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123 | child | 999 | -123 | 99
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(1 row)
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UPDATE foo SET f4 = f4 + f3 WHERE f4 = 99 RETURNING *;
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f1 | f2 | f3 | f4
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-----+-------+-----+------
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2 | more | 42 | 141
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123 | child | 999 | 1098
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(2 rows)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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-----+-------+-----+------
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2 | more | 42 | 141
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123 | child | 999 | 1098
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(2 rows)
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SELECT * FROM foochild;
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f1 | f2 | f3 | fc | f4
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-----+-------+-----+------+------
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123 | child | 999 | -123 | 1098
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(1 row)
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UPDATE foo SET f3 = f3*2
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FROM int8_tbl i
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WHERE foo.f1 = i.q2
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RETURNING *;
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f1 | f2 | f3 | f4 | q1 | q2
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-----+-------+------+------+------------------+-----
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123 | child | 1998 | 1098 | 4567890123456789 | 123
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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-----+-------+------+------
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2 | more | 42 | 141
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123 | child | 1998 | 1098
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(2 rows)
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SELECT * FROM foochild;
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f1 | f2 | f3 | fc | f4
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-----+-------+------+------+------
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123 | child | 1998 | -123 | 1098
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(1 row)
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DELETE FROM foo
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USING int8_tbl i
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WHERE foo.f1 = i.q2
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RETURNING *;
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f1 | f2 | f3 | f4 | q1 | q2
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-----+-------+------+------+------------------+-----
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123 | child | 1998 | 1098 | 4567890123456789 | 123
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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----+------+----+-----
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2 | more | 42 | 141
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(1 row)
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SELECT * FROM foochild;
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f1 | f2 | f3 | fc | f4
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----+----+----+----+----
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(0 rows)
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DROP TABLE foochild;
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-- Rules and views
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CREATE TEMP VIEW voo AS SELECT f1, f2 FROM foo;
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CREATE RULE voo_i AS ON INSERT TO voo DO INSTEAD
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INSERT INTO foo VALUES(new.*, 57);
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INSERT INTO voo VALUES(11,'zit');
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-- fails:
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INSERT INTO voo VALUES(12,'zoo') RETURNING *, f1*2;
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ERROR: cannot perform INSERT RETURNING on relation "voo"
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HINT: You need an unconditional ON INSERT DO INSTEAD rule with a RETURNING clause.
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-- fails, incompatible list:
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CREATE OR REPLACE RULE voo_i AS ON INSERT TO voo DO INSTEAD
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INSERT INTO foo VALUES(new.*, 57) RETURNING *;
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ERROR: RETURNING list has too many entries
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CREATE OR REPLACE RULE voo_i AS ON INSERT TO voo DO INSTEAD
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INSERT INTO foo VALUES(new.*, 57) RETURNING f1, f2;
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-- should still work
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INSERT INTO voo VALUES(13,'zit2');
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-- works now
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INSERT INTO voo VALUES(14,'zoo2') RETURNING *;
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f1 | f2
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----+------
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14 | zoo2
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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----+------+----+-----
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2 | more | 42 | 141
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11 | zit | 57 | 99
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13 | zit2 | 57 | 99
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14 | zoo2 | 57 | 99
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(4 rows)
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SELECT * FROM voo;
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f1 | f2
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----+------
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2 | more
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11 | zit
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13 | zit2
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14 | zoo2
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(4 rows)
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CREATE OR REPLACE RULE voo_u AS ON UPDATE TO voo DO INSTEAD
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UPDATE foo SET f1 = new.f1, f2 = new.f2 WHERE f1 = old.f1
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RETURNING f1, f2;
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update voo set f1 = f1 + 1 where f2 = 'zoo2';
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update voo set f1 = f1 + 1 where f2 = 'zoo2' RETURNING *, f1*2;
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f1 | f2 | ?column?
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----+------+----------
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16 | zoo2 | 32
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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----+------+----+-----
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2 | more | 42 | 141
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11 | zit | 57 | 99
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13 | zit2 | 57 | 99
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16 | zoo2 | 57 | 99
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(4 rows)
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SELECT * FROM voo;
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f1 | f2
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----+------
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2 | more
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11 | zit
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13 | zit2
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16 | zoo2
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(4 rows)
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CREATE OR REPLACE RULE voo_d AS ON DELETE TO voo DO INSTEAD
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DELETE FROM foo WHERE f1 = old.f1
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RETURNING f1, f2;
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DELETE FROM foo WHERE f1 = 13;
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DELETE FROM foo WHERE f2 = 'zit' RETURNING *;
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f1 | f2 | f3 | f4
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----+-----+----+----
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11 | zit | 57 | 99
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(1 row)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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----+------+----+-----
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2 | more | 42 | 141
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16 | zoo2 | 57 | 99
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(2 rows)
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SELECT * FROM voo;
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f1 | f2
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----+------
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2 | more
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16 | zoo2
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(2 rows)
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-- Try a join case
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CREATE TEMP TABLE joinme (f2j text, other int);
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INSERT INTO joinme VALUES('more', 12345);
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INSERT INTO joinme VALUES('zoo2', 54321);
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INSERT INTO joinme VALUES('other', 0);
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CREATE TEMP VIEW joinview AS
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SELECT foo.*, other FROM foo JOIN joinme ON (f2 = f2j);
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SELECT * FROM joinview;
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f1 | f2 | f3 | f4 | other
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----+------+----+-----+-------
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2 | more | 42 | 141 | 12345
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16 | zoo2 | 57 | 99 | 54321
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(2 rows)
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CREATE RULE joinview_u AS ON UPDATE TO joinview DO INSTEAD
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UPDATE foo SET f1 = new.f1, f3 = new.f3
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FROM joinme WHERE f2 = f2j AND f2 = old.f2
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RETURNING foo.*, other;
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UPDATE joinview SET f1 = f1 + 1 WHERE f3 = 57 RETURNING *, other + 1;
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f1 | f2 | f3 | f4 | other | ?column?
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----+------+----+----+-------+----------
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17 | zoo2 | 57 | 99 | 54321 | 54322
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(1 row)
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SELECT * FROM joinview;
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f1 | f2 | f3 | f4 | other
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----+------+----+-----+-------
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2 | more | 42 | 141 | 12345
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17 | zoo2 | 57 | 99 | 54321
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(2 rows)
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SELECT * FROM foo;
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f1 | f2 | f3 | f4
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----+------+----+-----
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2 | more | 42 | 141
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17 | zoo2 | 57 | 99
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(2 rows)
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SELECT * FROM voo;
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f1 | f2
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----+------
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2 | more
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17 | zoo2
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(2 rows)
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