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postgresql/src/test/regress/expected/rangefuncs.out

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SELECT name, setting FROM pg_settings WHERE name LIKE 'enable%';
name | setting
-------------------+---------
enable_bitmapscan | on
enable_hashagg | on
enable_hashjoin | on
enable_indexscan | on
enable_material | on
enable_mergejoin | on
enable_nestloop | on
enable_seqscan | on
enable_sort | on
enable_tidscan | on
(10 rows)
CREATE TABLE foo2(fooid int, f2 int);
INSERT INTO foo2 VALUES(1, 11);
INSERT INTO foo2 VALUES(2, 22);
INSERT INTO foo2 VALUES(1, 111);
CREATE FUNCTION foot(int) returns setof foo2 as 'SELECT * FROM foo2 WHERE fooid = $1;' LANGUAGE SQL;
-- supposed to fail with ERROR
select * from foo2, foot(foo2.fooid) z where foo2.f2 = z.f2;
ERROR: function expression in FROM cannot refer to other relations of same query level
LINE 1: select * from foo2, foot(foo2.fooid) z where foo2.f2 = z.f2;
^
-- function in subselect
select * from foo2 where f2 in (select f2 from foot(foo2.fooid) z where z.fooid = foo2.fooid) ORDER BY 1,2;
fooid | f2
-------+-----
1 | 11
1 | 111
2 | 22
(3 rows)
-- function in subselect
select * from foo2 where f2 in (select f2 from foot(1) z where z.fooid = foo2.fooid) ORDER BY 1,2;
fooid | f2
-------+-----
1 | 11
1 | 111
(2 rows)
-- function in subselect
select * from foo2 where f2 in (select f2 from foot(foo2.fooid) z where z.fooid = 1) ORDER BY 1,2;
fooid | f2
-------+-----
1 | 11
1 | 111
(2 rows)
-- nested functions
select foot.fooid, foot.f2 from foot(sin(pi()/2)::int) ORDER BY 1,2;
fooid | f2
-------+-----
1 | 11
1 | 111
(2 rows)
CREATE TABLE foo (fooid int, foosubid int, fooname text, primary key(fooid,foosubid));
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "foo_pkey" for table "foo"
INSERT INTO foo VALUES(1,1,'Joe');
INSERT INTO foo VALUES(1,2,'Ed');
INSERT INTO foo VALUES(2,1,'Mary');
-- sql, proretset = f, prorettype = b
CREATE FUNCTION getfoo(int) RETURNS int AS 'SELECT $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1;
t1
----
1
(1 row)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
getfoo
--------
1
(1 row)
-- sql, proretset = t, prorettype = b
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS setof int AS 'SELECT fooid FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1;
t1
----
1
1
(2 rows)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
getfoo
--------
1
1
(2 rows)
-- sql, proretset = t, prorettype = b
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS setof text AS 'SELECT fooname FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1;
t1
-----
Joe
Ed
(2 rows)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
getfoo
--------
Joe
Ed
(2 rows)
-- sql, proretset = f, prorettype = c
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS foo AS 'SELECT * FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
-- sql, proretset = t, prorettype = c
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS setof foo AS 'SELECT * FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
1 | 2 | Ed
(2 rows)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
1 | 2 | Ed
(2 rows)
-- sql, proretset = f, prorettype = record
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS RECORD AS 'SELECT * FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1(fooid int, foosubid int, fooname text);
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1) AS
(fooid int, foosubid int, fooname text);
SELECT * FROM vw_getfoo;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
-- sql, proretset = t, prorettype = record
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS setof record AS 'SELECT * FROM foo WHERE fooid = $1;' LANGUAGE SQL;
SELECT * FROM getfoo(1) AS t1(fooid int, foosubid int, fooname text);
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
1 | 2 | Ed
(2 rows)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1) AS
(fooid int, foosubid int, fooname text);
SELECT * FROM vw_getfoo;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
1 | 2 | Ed
(2 rows)
-- plpgsql, proretset = f, prorettype = b
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS int AS 'DECLARE fooint int; BEGIN SELECT fooid into fooint FROM foo WHERE fooid = $1; RETURN fooint; END;' LANGUAGE plpgsql;
SELECT * FROM getfoo(1) AS t1;
t1
----
1
(1 row)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
getfoo
--------
1
(1 row)
-- plpgsql, proretset = f, prorettype = c
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
CREATE FUNCTION getfoo(int) RETURNS foo AS 'DECLARE footup foo%ROWTYPE; BEGIN SELECT * into footup FROM foo WHERE fooid = $1; RETURN footup; END;' LANGUAGE plpgsql;
SELECT * FROM getfoo(1) AS t1;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
SELECT * FROM vw_getfoo;
fooid | foosubid | fooname
-------+----------+---------
1 | 1 | Joe
(1 row)
DROP VIEW vw_getfoo;
DROP FUNCTION getfoo(int);
DROP FUNCTION foot(int);
DROP TABLE foo2;
DROP TABLE foo;
-- Rescan tests --
CREATE TABLE foorescan (fooid int, foosubid int, fooname text, primary key(fooid,foosubid));
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "foorescan_pkey" for table "foorescan"
INSERT INTO foorescan values(5000,1,'abc.5000.1');
INSERT INTO foorescan values(5001,1,'abc.5001.1');
INSERT INTO foorescan values(5002,1,'abc.5002.1');
INSERT INTO foorescan values(5003,1,'abc.5003.1');
INSERT INTO foorescan values(5004,1,'abc.5004.1');
INSERT INTO foorescan values(5005,1,'abc.5005.1');
INSERT INTO foorescan values(5006,1,'abc.5006.1');
INSERT INTO foorescan values(5007,1,'abc.5007.1');
INSERT INTO foorescan values(5008,1,'abc.5008.1');
INSERT INTO foorescan values(5009,1,'abc.5009.1');
INSERT INTO foorescan values(5000,2,'abc.5000.2');
INSERT INTO foorescan values(5001,2,'abc.5001.2');
INSERT INTO foorescan values(5002,2,'abc.5002.2');
INSERT INTO foorescan values(5003,2,'abc.5003.2');
INSERT INTO foorescan values(5004,2,'abc.5004.2');
INSERT INTO foorescan values(5005,2,'abc.5005.2');
INSERT INTO foorescan values(5006,2,'abc.5006.2');
INSERT INTO foorescan values(5007,2,'abc.5007.2');
INSERT INTO foorescan values(5008,2,'abc.5008.2');
INSERT INTO foorescan values(5009,2,'abc.5009.2');
INSERT INTO foorescan values(5000,3,'abc.5000.3');
INSERT INTO foorescan values(5001,3,'abc.5001.3');
INSERT INTO foorescan values(5002,3,'abc.5002.3');
INSERT INTO foorescan values(5003,3,'abc.5003.3');
INSERT INTO foorescan values(5004,3,'abc.5004.3');
INSERT INTO foorescan values(5005,3,'abc.5005.3');
INSERT INTO foorescan values(5006,3,'abc.5006.3');
INSERT INTO foorescan values(5007,3,'abc.5007.3');
INSERT INTO foorescan values(5008,3,'abc.5008.3');
INSERT INTO foorescan values(5009,3,'abc.5009.3');
INSERT INTO foorescan values(5000,4,'abc.5000.4');
INSERT INTO foorescan values(5001,4,'abc.5001.4');
INSERT INTO foorescan values(5002,4,'abc.5002.4');
INSERT INTO foorescan values(5003,4,'abc.5003.4');
INSERT INTO foorescan values(5004,4,'abc.5004.4');
INSERT INTO foorescan values(5005,4,'abc.5005.4');
INSERT INTO foorescan values(5006,4,'abc.5006.4');
INSERT INTO foorescan values(5007,4,'abc.5007.4');
INSERT INTO foorescan values(5008,4,'abc.5008.4');
INSERT INTO foorescan values(5009,4,'abc.5009.4');
INSERT INTO foorescan values(5000,5,'abc.5000.5');
INSERT INTO foorescan values(5001,5,'abc.5001.5');
INSERT INTO foorescan values(5002,5,'abc.5002.5');
INSERT INTO foorescan values(5003,5,'abc.5003.5');
INSERT INTO foorescan values(5004,5,'abc.5004.5');
INSERT INTO foorescan values(5005,5,'abc.5005.5');
INSERT INTO foorescan values(5006,5,'abc.5006.5');
INSERT INTO foorescan values(5007,5,'abc.5007.5');
INSERT INTO foorescan values(5008,5,'abc.5008.5');
INSERT INTO foorescan values(5009,5,'abc.5009.5');
CREATE FUNCTION foorescan(int,int) RETURNS setof foorescan AS 'SELECT * FROM foorescan WHERE fooid >= $1 and fooid < $2 ;' LANGUAGE SQL;
--invokes ExecReScanFunctionScan
SELECT * FROM foorescan f WHERE f.fooid IN (SELECT fooid FROM foorescan(5002,5004)) ORDER BY 1,2;
fooid | foosubid | fooname
-------+----------+------------
5002 | 1 | abc.5002.1
5002 | 2 | abc.5002.2
5002 | 3 | abc.5002.3
5002 | 4 | abc.5002.4
5002 | 5 | abc.5002.5
5003 | 1 | abc.5003.1
5003 | 2 | abc.5003.2
5003 | 3 | abc.5003.3
5003 | 4 | abc.5003.4
5003 | 5 | abc.5003.5
(10 rows)
CREATE VIEW vw_foorescan AS SELECT * FROM foorescan(5002,5004);
--invokes ExecReScanFunctionScan
SELECT * FROM foorescan f WHERE f.fooid IN (SELECT fooid FROM vw_foorescan) ORDER BY 1,2;
fooid | foosubid | fooname
-------+----------+------------
5002 | 1 | abc.5002.1
5002 | 2 | abc.5002.2
5002 | 3 | abc.5002.3
5002 | 4 | abc.5002.4
5002 | 5 | abc.5002.5
5003 | 1 | abc.5003.1
5003 | 2 | abc.5003.2
5003 | 3 | abc.5003.3
5003 | 4 | abc.5003.4
5003 | 5 | abc.5003.5
(10 rows)
CREATE TABLE barrescan (fooid int primary key);
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "barrescan_pkey" for table "barrescan"
INSERT INTO barrescan values(5003);
INSERT INTO barrescan values(5004);
INSERT INTO barrescan values(5005);
INSERT INTO barrescan values(5006);
INSERT INTO barrescan values(5007);
INSERT INTO barrescan values(5008);
CREATE FUNCTION foorescan(int) RETURNS setof foorescan AS 'SELECT * FROM foorescan WHERE fooid = $1;' LANGUAGE SQL;
--invokes ExecReScanFunctionScan with chgParam != NULL
SELECT f.* FROM barrescan b, foorescan f WHERE f.fooid = b.fooid AND b.fooid IN (SELECT fooid FROM foorescan(b.fooid)) ORDER BY 1,2;
fooid | foosubid | fooname
-------+----------+------------
5003 | 1 | abc.5003.1
5003 | 2 | abc.5003.2
5003 | 3 | abc.5003.3
5003 | 4 | abc.5003.4
5003 | 5 | abc.5003.5
5004 | 1 | abc.5004.1
5004 | 2 | abc.5004.2
5004 | 3 | abc.5004.3
5004 | 4 | abc.5004.4
5004 | 5 | abc.5004.5
5005 | 1 | abc.5005.1
5005 | 2 | abc.5005.2
5005 | 3 | abc.5005.3
5005 | 4 | abc.5005.4
5005 | 5 | abc.5005.5
5006 | 1 | abc.5006.1
5006 | 2 | abc.5006.2
5006 | 3 | abc.5006.3
5006 | 4 | abc.5006.4
5006 | 5 | abc.5006.5
5007 | 1 | abc.5007.1
5007 | 2 | abc.5007.2
5007 | 3 | abc.5007.3
5007 | 4 | abc.5007.4
5007 | 5 | abc.5007.5
5008 | 1 | abc.5008.1
5008 | 2 | abc.5008.2
5008 | 3 | abc.5008.3
5008 | 4 | abc.5008.4
5008 | 5 | abc.5008.5
(30 rows)
SELECT b.fooid, max(f.foosubid) FROM barrescan b, foorescan f WHERE f.fooid = b.fooid AND b.fooid IN (SELECT fooid FROM foorescan(b.fooid)) GROUP BY b.fooid ORDER BY 1,2;
fooid | max
-------+-----
5003 | 5
5004 | 5
5005 | 5
5006 | 5
5007 | 5
5008 | 5
(6 rows)
CREATE VIEW fooview1 AS SELECT f.* FROM barrescan b, foorescan f WHERE f.fooid = b.fooid AND b.fooid IN (SELECT fooid FROM foorescan(b.fooid)) ORDER BY 1,2;
SELECT * FROM fooview1 AS fv WHERE fv.fooid = 5004;
fooid | foosubid | fooname
-------+----------+------------
5004 | 1 | abc.5004.1
5004 | 2 | abc.5004.2
5004 | 3 | abc.5004.3
5004 | 4 | abc.5004.4
5004 | 5 | abc.5004.5
(5 rows)
CREATE VIEW fooview2 AS SELECT b.fooid, max(f.foosubid) AS maxsubid FROM barrescan b, foorescan f WHERE f.fooid = b.fooid AND b.fooid IN (SELECT fooid FROM foorescan(b.fooid)) GROUP BY b.fooid ORDER BY 1,2;
SELECT * FROM fooview2 AS fv WHERE fv.maxsubid = 5;
fooid | maxsubid
-------+----------
5003 | 5
5004 | 5
5005 | 5
5006 | 5
5007 | 5
5008 | 5
(6 rows)
DROP VIEW vw_foorescan;
DROP VIEW fooview1;
DROP VIEW fooview2;
DROP FUNCTION foorescan(int,int);
DROP FUNCTION foorescan(int);
DROP TABLE foorescan;
DROP TABLE barrescan;
--
-- Test cases involving OUT parameters
--
CREATE FUNCTION foo(in f1 int, out f2 int)
AS 'select $1+1' LANGUAGE sql;
SELECT foo(42);
foo
-----
43
(1 row)
SELECT * FROM foo(42);
f2
----
43
(1 row)
SELECT * FROM foo(42) AS p(x);
x
----
43
(1 row)
-- explicit spec of return type is OK
CREATE OR REPLACE FUNCTION foo(in f1 int, out f2 int) RETURNS int
AS 'select $1+1' LANGUAGE sql;
-- error, wrong result type
CREATE OR REPLACE FUNCTION foo(in f1 int, out f2 int) RETURNS float
AS 'select $1+1' LANGUAGE sql;
ERROR: function result type must be integer because of OUT parameters
-- with multiple OUT params you must get a RECORD result
CREATE OR REPLACE FUNCTION foo(in f1 int, out f2 int, out f3 text) RETURNS int
AS 'select $1+1' LANGUAGE sql;
ERROR: function result type must be record because of OUT parameters
CREATE OR REPLACE FUNCTION foo(in f1 int, out f2 int, out f3 text)
RETURNS record
AS 'select $1+1' LANGUAGE sql;
ERROR: cannot change return type of existing function
HINT: Use DROP FUNCTION first.
CREATE OR REPLACE FUNCTION foor(in f1 int, out f2 int, out text)
AS $$select $1-1, $1::text || 'z'$$ LANGUAGE sql;
SELECT f1, foor(f1) FROM int4_tbl;
f1 | foor
-------------+----------------------------
0 | (-1,0z)
123456 | (123455,123456z)
-123456 | (-123457,-123456z)
2147483647 | (2147483646,2147483647z)
-2147483647 | (-2147483648,-2147483647z)
(5 rows)
SELECT * FROM foor(42);
f2 | column2
----+---------
41 | 42z
(1 row)
SELECT * FROM foor(42) AS p(a,b);
a | b
----+-----
41 | 42z
(1 row)
CREATE OR REPLACE FUNCTION foob(in f1 int, inout f2 int, out text)
AS $$select $2-1, $1::text || 'z'$$ LANGUAGE sql;
SELECT f1, foob(f1, f1/2) FROM int4_tbl;
f1 | foob
-------------+----------------------------
0 | (-1,0z)
123456 | (61727,123456z)
-123456 | (-61729,-123456z)
2147483647 | (1073741822,2147483647z)
-2147483647 | (-1073741824,-2147483647z)
(5 rows)
SELECT * FROM foob(42, 99);
f2 | column2
----+---------
98 | 42z
(1 row)
SELECT * FROM foob(42, 99) AS p(a,b);
a | b
----+-----
98 | 42z
(1 row)
-- Can reference function with or without OUT params for DROP, etc
DROP FUNCTION foo(int);
DROP FUNCTION foor(in f2 int, out f1 int, out text);
DROP FUNCTION foob(in f1 int, inout f2 int);
--
-- For my next trick, polymorphic OUT parameters
--
CREATE FUNCTION dup (f1 anyelement, f2 out anyelement, f3 out anyarray)
AS 'select $1, array[$1,$1]' LANGUAGE sql;
SELECT dup(22);
dup
----------------
(22,"{22,22}")
(1 row)
SELECT dup('xyz'); -- fails
ERROR: could not determine polymorphic type because input has type "unknown"
SELECT dup('xyz'::text);
dup
-------------------
(xyz,"{xyz,xyz}")
(1 row)
SELECT * FROM dup('xyz'::text);
f2 | f3
-----+-----------
xyz | {xyz,xyz}
(1 row)
-- fails, as we are attempting to rename first argument
CREATE OR REPLACE FUNCTION dup (inout f2 anyelement, out f3 anyarray)
AS 'select $1, array[$1,$1]' LANGUAGE sql;
ERROR: cannot change name of input parameter "f1"
HINT: Use DROP FUNCTION first.
DROP FUNCTION dup(anyelement);
-- equivalent behavior, though different name exposed for input arg
CREATE OR REPLACE FUNCTION dup (inout f2 anyelement, out f3 anyarray)
AS 'select $1, array[$1,$1]' LANGUAGE sql;
SELECT dup(22);
dup
----------------
(22,"{22,22}")
(1 row)
DROP FUNCTION dup(anyelement);
-- fails, no way to deduce outputs
CREATE FUNCTION bad (f1 int, out f2 anyelement, out f3 anyarray)
AS 'select $1, array[$1,$1]' LANGUAGE sql;
ERROR: cannot determine result data type
DETAIL: A function returning a polymorphic type must have at least one polymorphic argument.
--
-- table functions
--
CREATE OR REPLACE FUNCTION foo()
RETURNS TABLE(a int)
AS $$ SELECT a FROM generate_series(1,5) a(a) $$ LANGUAGE sql;
SELECT * FROM foo();
a
---
1
2
3
4
5
(5 rows)
DROP FUNCTION foo();
CREATE OR REPLACE FUNCTION foo(int)
RETURNS TABLE(a int, b int)
AS $$ SELECT a, b
FROM generate_series(1,$1) a(a),
generate_series(1,$1) b(b) $$ LANGUAGE sql;
SELECT * FROM foo(3);
a | b
---+---
1 | 1
1 | 2
1 | 3
2 | 1
2 | 2
2 | 3
3 | 1
3 | 2
3 | 3
(9 rows)
DROP FUNCTION foo(int);
--
-- some tests on SQL functions with RETURNING
--
create temp table tt(f1 serial, data text);
NOTICE: CREATE TABLE will create implicit sequence "tt_f1_seq" for serial column "tt.f1"
create function insert_tt(text) returns int as
$$ insert into tt(data) values($1) returning f1 $$
language sql;
select insert_tt('foo');
insert_tt
-----------
1
(1 row)
select insert_tt('bar');
insert_tt
-----------
2
(1 row)
select * from tt;
f1 | data
----+------
1 | foo
2 | bar
(2 rows)
-- insert will execute to completion even if function needs just 1 row
create or replace function insert_tt(text) returns int as
$$ insert into tt(data) values($1),($1||$1) returning f1 $$
language sql;
select insert_tt('fool');
insert_tt
-----------
3
(1 row)
select * from tt;
f1 | data
----+----------
1 | foo
2 | bar
3 | fool
4 | foolfool
(4 rows)
-- setof does what's expected
create or replace function insert_tt2(text,text) returns setof int as
$$ insert into tt(data) values($1),($2) returning f1 $$
language sql;
select insert_tt2('foolish','barrish');
insert_tt2
------------
5
6
(2 rows)
select * from insert_tt2('baz','quux');
insert_tt2
------------
7
8
(2 rows)
select * from tt;
f1 | data
----+----------
1 | foo
2 | bar
3 | fool
4 | foolfool
5 | foolish
6 | barrish
7 | baz
8 | quux
(8 rows)
-- limit doesn't prevent execution to completion
select insert_tt2('foolish','barrish') limit 1;
insert_tt2
------------
9
(1 row)
select * from tt;
f1 | data
----+----------
1 | foo
2 | bar
3 | fool
4 | foolfool
5 | foolish
6 | barrish
7 | baz
8 | quux
9 | foolish
10 | barrish
(10 rows)
-- triggers will fire, too
create function noticetrigger() returns trigger as $$
begin
raise notice 'noticetrigger % %', new.f1, new.data;
return null;
end $$ language plpgsql;
create trigger tnoticetrigger after insert on tt for each row
execute procedure noticetrigger();
select insert_tt2('foolme','barme') limit 1;
NOTICE: noticetrigger 11 foolme
CONTEXT: SQL function "insert_tt2" statement 1
NOTICE: noticetrigger 12 barme
CONTEXT: SQL function "insert_tt2" statement 1
insert_tt2
------------
11
(1 row)
select * from tt;
f1 | data
----+----------
1 | foo
2 | bar
3 | fool
4 | foolfool
5 | foolish
6 | barrish
7 | baz
8 | quux
9 | foolish
10 | barrish
11 | foolme
12 | barme
(12 rows)
-- and rules work
create temp table tt_log(f1 int, data text);
create rule insert_tt_rule as on insert to tt do also
insert into tt_log values(new.*);
select insert_tt2('foollog','barlog') limit 1;
NOTICE: noticetrigger 13 foollog
CONTEXT: SQL function "insert_tt2" statement 1
NOTICE: noticetrigger 14 barlog
CONTEXT: SQL function "insert_tt2" statement 1
insert_tt2
------------
13
(1 row)
select * from tt;
f1 | data
----+----------
1 | foo
2 | bar
3 | fool
4 | foolfool
5 | foolish
6 | barrish
7 | baz
8 | quux
9 | foolish
10 | barrish
11 | foolme
12 | barme
13 | foollog
14 | barlog
(14 rows)
-- note that nextval() gets executed a second time in the rule expansion,
-- which is expected.
select * from tt_log;
f1 | data
----+---------
15 | foollog
16 | barlog
(2 rows)
-- test case for a whole-row-variable bug
create function foo1(n integer, out a text, out b text)
returns setof record
language sql
as $$ select 'foo ' || i, 'bar ' || i from generate_series(1,$1) i $$;
set work_mem='64kB';
select t.a, t, t.a from foo1(10000) t limit 1;
a | t | a
-------+-------------------+-------
foo 1 | ("foo 1","bar 1") | foo 1
(1 row)
reset work_mem;
select t.a, t, t.a from foo1(10000) t limit 1;
a | t | a
-------+-------------------+-------
foo 1 | ("foo 1","bar 1") | foo 1
(1 row)
drop function foo1(n integer);
-- test use of SQL functions returning record
-- this is supported in some cases where the query doesn't specify
-- the actual record type ...
create function array_to_set(anyarray) returns setof record as $$
select i AS "index", $1[i] AS "value" from generate_subscripts($1, 1) i
$$ language sql strict immutable;
select array_to_set(array['one', 'two']);
array_to_set
--------------
(1,one)
(2,two)
(2 rows)
select * from array_to_set(array['one', 'two']) as t(f1 int,f2 text);
f1 | f2
----+-----
1 | one
2 | two
(2 rows)
select * from array_to_set(array['one', 'two']); -- fail
ERROR: a column definition list is required for functions returning "record"
LINE 1: select * from array_to_set(array['one', 'two']);
^
create temp table foo(f1 int8, f2 int8);
create function testfoo() returns record as $$
insert into foo values (1,2) returning *;
$$ language sql;
select testfoo();
testfoo
---------
(1,2)
(1 row)
select * from testfoo() as t(f1 int8,f2 int8);
f1 | f2
----+----
1 | 2
(1 row)
select * from testfoo(); -- fail
ERROR: a column definition list is required for functions returning "record"
LINE 1: select * from testfoo();
^
drop function testfoo();
create function testfoo() returns setof record as $$
insert into foo values (1,2), (3,4) returning *;
$$ language sql;
select testfoo();
testfoo
---------
(1,2)
(3,4)
(2 rows)
select * from testfoo() as t(f1 int8,f2 int8);
f1 | f2
----+----
1 | 2
3 | 4
(2 rows)
select * from testfoo(); -- fail
ERROR: a column definition list is required for functions returning "record"
LINE 1: select * from testfoo();
^
drop function testfoo();
--
-- Check some cases involving dropped columns in a rowtype result
--
create temp table users (userid text, email text, todrop bool, enabled bool);
insert into users values ('id','email',true,true);
insert into users values ('id2','email2',true,true);
alter table users drop column todrop;
create or replace function get_first_user() returns users as
$$ SELECT * FROM users ORDER BY userid LIMIT 1; $$
language sql stable;
SELECT get_first_user();
get_first_user
----------------
(id,email,t)
(1 row)
SELECT * FROM get_first_user();
userid | email | enabled
--------+-------+---------
id | email | t
(1 row)
create or replace function get_users() returns setof users as
$$ SELECT * FROM users ORDER BY userid; $$
language sql stable;
SELECT get_users();
get_users
----------------
(id,email,t)
(id2,email2,t)
(2 rows)
SELECT * FROM get_users();
userid | email | enabled
--------+--------+---------
id | email | t
id2 | email2 | t
(2 rows)
drop function get_first_user();
drop function get_users();
drop table users;
-- this won't get inlined because of type coercion, but it shouldn't fail
create or replace function foobar() returns setof text as
$$ select 'foo'::varchar union all select 'bar'::varchar ; $$
language sql stable;
select foobar();
foobar
--------
foo
bar
(2 rows)
select * from foobar();
foobar
--------
foo
bar
(2 rows)
drop function foobar();
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