2012-02-14 04:20:27 +01:00
|
|
|
--
|
|
|
|
-- CREATE FUNCTION
|
|
|
|
--
|
2018-03-16 17:48:13 +01:00
|
|
|
-- Assorted tests using SQL-language functions
|
2012-02-14 04:20:27 +01:00
|
|
|
--
|
2018-03-16 17:48:13 +01:00
|
|
|
-- All objects made in this test are in temp_func_test schema
|
2016-07-18 00:42:31 +02:00
|
|
|
CREATE USER regress_unpriv_user;
|
2012-02-14 04:20:27 +01:00
|
|
|
CREATE SCHEMA temp_func_test;
|
2012-02-15 16:56:26 +01:00
|
|
|
GRANT ALL ON SCHEMA temp_func_test TO public;
|
2012-02-14 04:20:27 +01:00
|
|
|
SET search_path TO temp_func_test, public;
|
|
|
|
--
|
2018-03-16 17:48:13 +01:00
|
|
|
-- Make sanity checks on the pg_proc entries created by CREATE FUNCTION
|
|
|
|
--
|
|
|
|
--
|
2012-05-15 21:19:04 +02:00
|
|
|
-- ARGUMENT and RETURN TYPES
|
2012-02-14 04:20:27 +01:00
|
|
|
--
|
|
|
|
CREATE FUNCTION functest_A_1(text, date) RETURNS bool LANGUAGE 'sql'
|
|
|
|
AS 'SELECT $1 = ''abcd'' AND $2 > ''2001-01-01''';
|
|
|
|
CREATE FUNCTION functest_A_2(text[]) RETURNS int LANGUAGE 'sql'
|
2020-09-05 13:28:05 +02:00
|
|
|
AS 'SELECT $1[1]::int';
|
2012-02-14 04:20:27 +01:00
|
|
|
CREATE FUNCTION functest_A_3() RETURNS bool LANGUAGE 'sql'
|
|
|
|
AS 'SELECT false';
|
|
|
|
SELECT proname, prorettype::regtype, proargtypes::regtype[] FROM pg_proc
|
|
|
|
WHERE oid in ('functest_A_1'::regproc,
|
|
|
|
'functest_A_2'::regproc,
|
2012-02-14 04:49:07 +01:00
|
|
|
'functest_A_3'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | prorettype | proargtypes
|
|
|
|
--------------+------------+-------------------
|
|
|
|
functest_a_1 | boolean | [0:1]={text,date}
|
|
|
|
functest_a_2 | integer | [0:0]={text[]}
|
|
|
|
functest_a_3 | boolean | {}
|
|
|
|
(3 rows)
|
|
|
|
|
2020-09-05 13:28:05 +02:00
|
|
|
SELECT functest_A_1('abcd', '2020-01-01');
|
|
|
|
functest_a_1
|
|
|
|
--------------
|
|
|
|
t
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_A_2(ARRAY['1', '2', '3']);
|
|
|
|
functest_a_2
|
|
|
|
--------------
|
|
|
|
1
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_A_3();
|
|
|
|
functest_a_3
|
|
|
|
--------------
|
|
|
|
f
|
|
|
|
(1 row)
|
|
|
|
|
2012-02-14 04:20:27 +01:00
|
|
|
--
|
|
|
|
-- IMMUTABLE | STABLE | VOLATILE
|
|
|
|
--
|
|
|
|
CREATE FUNCTION functest_B_1(int) RETURNS bool LANGUAGE 'sql'
|
|
|
|
AS 'SELECT $1 > 0';
|
|
|
|
CREATE FUNCTION functest_B_2(int) RETURNS bool LANGUAGE 'sql'
|
|
|
|
IMMUTABLE AS 'SELECT $1 > 0';
|
|
|
|
CREATE FUNCTION functest_B_3(int) RETURNS bool LANGUAGE 'sql'
|
|
|
|
STABLE AS 'SELECT $1 = 0';
|
|
|
|
CREATE FUNCTION functest_B_4(int) RETURNS bool LANGUAGE 'sql'
|
|
|
|
VOLATILE AS 'SELECT $1 < 0';
|
|
|
|
SELECT proname, provolatile FROM pg_proc
|
|
|
|
WHERE oid in ('functest_B_1'::regproc,
|
|
|
|
'functest_B_2'::regproc,
|
|
|
|
'functest_B_3'::regproc,
|
2012-02-14 04:49:07 +01:00
|
|
|
'functest_B_4'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | provolatile
|
|
|
|
--------------+-------------
|
|
|
|
functest_b_1 | v
|
|
|
|
functest_b_2 | i
|
|
|
|
functest_b_3 | s
|
|
|
|
functest_b_4 | v
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
ALTER FUNCTION functest_B_2(int) VOLATILE;
|
|
|
|
ALTER FUNCTION functest_B_3(int) COST 100; -- unrelated change, no effect
|
|
|
|
SELECT proname, provolatile FROM pg_proc
|
|
|
|
WHERE oid in ('functest_B_1'::regproc,
|
|
|
|
'functest_B_2'::regproc,
|
|
|
|
'functest_B_3'::regproc,
|
2012-02-14 04:49:07 +01:00
|
|
|
'functest_B_4'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | provolatile
|
|
|
|
--------------+-------------
|
|
|
|
functest_b_1 | v
|
|
|
|
functest_b_2 | v
|
|
|
|
functest_b_3 | s
|
|
|
|
functest_b_4 | v
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
--
|
|
|
|
-- SECURITY DEFINER | INVOKER
|
|
|
|
--
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_C_1(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
AS 'SELECT $1 > 0';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_C_2(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
SECURITY DEFINER AS 'SELECT $1 = 0';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_C_3(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
SECURITY INVOKER AS 'SELECT $1 < 0';
|
|
|
|
SELECT proname, prosecdef FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_C_1'::regproc,
|
|
|
|
'functest_C_2'::regproc,
|
|
|
|
'functest_C_3'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | prosecdef
|
|
|
|
--------------+-----------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_c_1 | f
|
|
|
|
functest_c_2 | t
|
|
|
|
functest_c_3 | f
|
2012-02-14 04:20:27 +01:00
|
|
|
(3 rows)
|
|
|
|
|
2018-02-12 19:47:18 +01:00
|
|
|
ALTER FUNCTION functest_C_1(int) IMMUTABLE; -- unrelated change, no effect
|
|
|
|
ALTER FUNCTION functest_C_2(int) SECURITY INVOKER;
|
|
|
|
ALTER FUNCTION functest_C_3(int) SECURITY DEFINER;
|
2012-02-14 04:20:27 +01:00
|
|
|
SELECT proname, prosecdef FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_C_1'::regproc,
|
|
|
|
'functest_C_2'::regproc,
|
|
|
|
'functest_C_3'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | prosecdef
|
|
|
|
--------------+-----------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_c_1 | f
|
|
|
|
functest_c_2 | f
|
|
|
|
functest_c_3 | t
|
2012-02-14 04:20:27 +01:00
|
|
|
(3 rows)
|
|
|
|
|
|
|
|
--
|
|
|
|
-- LEAKPROOF
|
|
|
|
--
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_E_1(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
AS 'SELECT $1 > 100';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_E_2(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
LEAKPROOF AS 'SELECT $1 > 100';
|
|
|
|
SELECT proname, proleakproof FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_E_1'::regproc,
|
|
|
|
'functest_E_2'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | proleakproof
|
|
|
|
--------------+--------------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_e_1 | f
|
|
|
|
functest_e_2 | t
|
2012-02-14 04:20:27 +01:00
|
|
|
(2 rows)
|
|
|
|
|
2018-02-12 19:47:18 +01:00
|
|
|
ALTER FUNCTION functest_E_1(int) LEAKPROOF;
|
|
|
|
ALTER FUNCTION functest_E_2(int) STABLE; -- unrelated change, no effect
|
2012-02-14 04:20:27 +01:00
|
|
|
SELECT proname, proleakproof FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_E_1'::regproc,
|
|
|
|
'functest_E_2'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | proleakproof
|
|
|
|
--------------+--------------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_e_1 | t
|
|
|
|
functest_e_2 | t
|
2012-02-14 04:20:27 +01:00
|
|
|
(2 rows)
|
|
|
|
|
2018-03-16 17:48:13 +01:00
|
|
|
ALTER FUNCTION functest_E_2(int) NOT LEAKPROOF; -- remove leakproof attribute
|
2012-02-15 16:56:26 +01:00
|
|
|
SELECT proname, proleakproof FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_E_1'::regproc,
|
|
|
|
'functest_E_2'::regproc) ORDER BY proname;
|
2012-02-15 16:56:26 +01:00
|
|
|
proname | proleakproof
|
|
|
|
--------------+--------------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_e_1 | t
|
|
|
|
functest_e_2 | f
|
2012-02-15 16:56:26 +01:00
|
|
|
(2 rows)
|
|
|
|
|
2018-03-16 17:48:13 +01:00
|
|
|
-- it takes superuser privilege to turn on leakproof, but not to turn off
|
2018-02-12 19:47:18 +01:00
|
|
|
ALTER FUNCTION functest_E_1(int) OWNER TO regress_unpriv_user;
|
|
|
|
ALTER FUNCTION functest_E_2(int) OWNER TO regress_unpriv_user;
|
2016-07-18 00:42:31 +02:00
|
|
|
SET SESSION AUTHORIZATION regress_unpriv_user;
|
2012-02-15 16:56:26 +01:00
|
|
|
SET search_path TO temp_func_test, public;
|
2018-02-12 19:47:18 +01:00
|
|
|
ALTER FUNCTION functest_E_1(int) NOT LEAKPROOF;
|
|
|
|
ALTER FUNCTION functest_E_2(int) LEAKPROOF;
|
2012-02-15 16:56:26 +01:00
|
|
|
ERROR: only superuser can define a leakproof function
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_E_3(int) RETURNS bool LANGUAGE 'sql'
|
2018-03-16 17:48:13 +01:00
|
|
|
LEAKPROOF AS 'SELECT $1 < 200'; -- fail
|
2012-02-15 16:56:26 +01:00
|
|
|
ERROR: only superuser can define a leakproof function
|
|
|
|
RESET SESSION AUTHORIZATION;
|
2012-02-14 04:20:27 +01:00
|
|
|
--
|
|
|
|
-- CALLED ON NULL INPUT | RETURNS NULL ON NULL INPUT | STRICT
|
|
|
|
--
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_F_1(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
AS 'SELECT $1 > 50';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_F_2(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
CALLED ON NULL INPUT AS 'SELECT $1 = 50';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_F_3(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
RETURNS NULL ON NULL INPUT AS 'SELECT $1 < 50';
|
2018-02-12 19:47:18 +01:00
|
|
|
CREATE FUNCTION functest_F_4(int) RETURNS bool LANGUAGE 'sql'
|
2012-02-14 04:20:27 +01:00
|
|
|
STRICT AS 'SELECT $1 = 50';
|
|
|
|
SELECT proname, proisstrict FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_F_1'::regproc,
|
|
|
|
'functest_F_2'::regproc,
|
|
|
|
'functest_F_3'::regproc,
|
|
|
|
'functest_F_4'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | proisstrict
|
|
|
|
--------------+-------------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_f_1 | f
|
|
|
|
functest_f_2 | f
|
|
|
|
functest_f_3 | t
|
|
|
|
functest_f_4 | t
|
2012-02-14 04:20:27 +01:00
|
|
|
(4 rows)
|
|
|
|
|
2018-02-12 19:47:18 +01:00
|
|
|
ALTER FUNCTION functest_F_1(int) IMMUTABLE; -- unrelated change, no effect
|
|
|
|
ALTER FUNCTION functest_F_2(int) STRICT;
|
|
|
|
ALTER FUNCTION functest_F_3(int) CALLED ON NULL INPUT;
|
2012-02-14 04:20:27 +01:00
|
|
|
SELECT proname, proisstrict FROM pg_proc
|
2018-02-12 19:47:18 +01:00
|
|
|
WHERE oid in ('functest_F_1'::regproc,
|
|
|
|
'functest_F_2'::regproc,
|
|
|
|
'functest_F_3'::regproc,
|
|
|
|
'functest_F_4'::regproc) ORDER BY proname;
|
2012-02-14 04:20:27 +01:00
|
|
|
proname | proisstrict
|
|
|
|
--------------+-------------
|
2018-02-12 19:47:18 +01:00
|
|
|
functest_f_1 | f
|
|
|
|
functest_f_2 | t
|
|
|
|
functest_f_3 | f
|
|
|
|
functest_f_4 | t
|
2012-02-14 04:20:27 +01:00
|
|
|
(4 rows)
|
|
|
|
|
2018-02-12 20:03:04 +01:00
|
|
|
-- pg_get_functiondef tests
|
|
|
|
SELECT pg_get_functiondef('functest_A_1'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
--------------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_a_1(text, date)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
AS $function$SELECT $1 = 'abcd' AND $2 > '2001-01-01'$function$ +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_B_3'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-----------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_b_3(integer)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
STABLE +
|
|
|
|
AS $function$SELECT $1 = 0$function$ +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_C_3'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-----------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_c_3(integer)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
SECURITY DEFINER +
|
|
|
|
AS $function$SELECT $1 < 0$function$ +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_F_2'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-----------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_f_2(integer)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
STRICT +
|
|
|
|
AS $function$SELECT $1 = 50$function$ +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
2021-04-07 21:30:08 +02:00
|
|
|
--
|
|
|
|
-- SQL-standard body
|
|
|
|
--
|
|
|
|
CREATE FUNCTION functest_S_1(a text, b date) RETURNS boolean
|
|
|
|
LANGUAGE SQL
|
|
|
|
RETURN a = 'abcd' AND b > '2001-01-01';
|
|
|
|
CREATE FUNCTION functest_S_2(a text[]) RETURNS int
|
|
|
|
RETURN a[1]::int;
|
|
|
|
CREATE FUNCTION functest_S_3() RETURNS boolean
|
|
|
|
RETURN false;
|
|
|
|
CREATE FUNCTION functest_S_3a() RETURNS boolean
|
|
|
|
BEGIN ATOMIC
|
|
|
|
RETURN false;
|
|
|
|
END;
|
|
|
|
CREATE FUNCTION functest_S_10(a text, b date) RETURNS boolean
|
|
|
|
LANGUAGE SQL
|
|
|
|
BEGIN ATOMIC
|
|
|
|
SELECT a = 'abcd' AND b > '2001-01-01';
|
|
|
|
END;
|
|
|
|
CREATE FUNCTION functest_S_13() RETURNS boolean
|
|
|
|
BEGIN ATOMIC
|
|
|
|
SELECT 1;
|
|
|
|
SELECT false;
|
|
|
|
END;
|
|
|
|
-- error: duplicate function body
|
|
|
|
CREATE FUNCTION functest_S_xxx(x int) RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
AS $$ SELECT x * 2 $$
|
|
|
|
RETURN x * 3;
|
|
|
|
ERROR: duplicate function body specified
|
|
|
|
-- polymorphic arguments not allowed in this form
|
|
|
|
CREATE FUNCTION functest_S_xx(x anyarray) RETURNS anyelement
|
|
|
|
LANGUAGE SQL
|
|
|
|
RETURN x[1];
|
|
|
|
ERROR: SQL function with unquoted function body cannot have polymorphic arguments
|
2021-04-15 23:17:20 +02:00
|
|
|
-- check reporting of parse-analysis errors
|
|
|
|
CREATE FUNCTION functest_S_xx(x date) RETURNS boolean
|
|
|
|
LANGUAGE SQL
|
|
|
|
RETURN x > 1;
|
|
|
|
ERROR: operator does not exist: date > integer
|
2021-04-15 23:24:12 +02:00
|
|
|
LINE 3: RETURN x > 1;
|
|
|
|
^
|
2021-04-15 23:17:20 +02:00
|
|
|
HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
|
2021-04-07 21:30:08 +02:00
|
|
|
-- tricky parsing
|
|
|
|
CREATE FUNCTION functest_S_15(x int) RETURNS boolean
|
|
|
|
LANGUAGE SQL
|
|
|
|
BEGIN ATOMIC
|
|
|
|
select case when x % 2 = 0 then true else false end;
|
|
|
|
END;
|
|
|
|
SELECT functest_S_1('abcd', '2020-01-01');
|
|
|
|
functest_s_1
|
|
|
|
--------------
|
|
|
|
t
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_S_2(ARRAY['1', '2', '3']);
|
|
|
|
functest_s_2
|
|
|
|
--------------
|
|
|
|
1
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_S_3();
|
|
|
|
functest_s_3
|
|
|
|
--------------
|
|
|
|
f
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_S_10('abcd', '2020-01-01');
|
|
|
|
functest_s_10
|
|
|
|
---------------
|
|
|
|
t
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT functest_S_13();
|
|
|
|
functest_s_13
|
|
|
|
---------------
|
|
|
|
f
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_1'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_1(a text, b date)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
RETURN ((a = 'abcd'::text) AND (b > '01-01-2001'::date)) +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_2'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
------------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_2(a text[])+
|
|
|
|
RETURNS integer +
|
|
|
|
LANGUAGE sql +
|
|
|
|
RETURN ((a)[1])::integer +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_3'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
----------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_3()+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
RETURN false +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_3a'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-----------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_3a()+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
BEGIN ATOMIC +
|
|
|
|
RETURN false; +
|
|
|
|
END +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_10'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-------------------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_10(a text, b date)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
BEGIN ATOMIC +
|
|
|
|
SELECT ((a = 'abcd'::text) AND (b > '01-01-2001'::date)); +
|
|
|
|
END +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_13'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
-----------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_13()+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
BEGIN ATOMIC +
|
|
|
|
SELECT 1; +
|
|
|
|
SELECT false AS bool; +
|
|
|
|
END +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
SELECT pg_get_functiondef('functest_S_15'::regproc);
|
|
|
|
pg_get_functiondef
|
|
|
|
--------------------------------------------------------------------
|
|
|
|
CREATE OR REPLACE FUNCTION temp_func_test.functest_s_15(x integer)+
|
|
|
|
RETURNS boolean +
|
|
|
|
LANGUAGE sql +
|
|
|
|
BEGIN ATOMIC +
|
|
|
|
SELECT +
|
|
|
|
CASE +
|
|
|
|
WHEN ((x % 2) = 0) THEN true +
|
|
|
|
ELSE false +
|
|
|
|
END AS "case"; +
|
|
|
|
END +
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
-- test with views
|
|
|
|
CREATE TABLE functest3 (a int);
|
|
|
|
INSERT INTO functest3 VALUES (1), (2);
|
|
|
|
CREATE VIEW functestv3 AS SELECT * FROM functest3;
|
|
|
|
CREATE FUNCTION functest_S_14() RETURNS bigint
|
|
|
|
RETURN (SELECT count(*) FROM functestv3);
|
|
|
|
SELECT functest_S_14();
|
|
|
|
functest_s_14
|
|
|
|
---------------
|
|
|
|
2
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
DROP TABLE functest3 CASCADE;
|
|
|
|
NOTICE: drop cascades to 2 other objects
|
|
|
|
DETAIL: drop cascades to view functestv3
|
|
|
|
drop cascades to function functest_s_14()
|
2013-11-27 05:18:58 +01:00
|
|
|
-- information_schema tests
|
|
|
|
CREATE FUNCTION functest_IS_1(a int, b int default 1, c text default 'foo')
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
AS 'SELECT $1 + $2';
|
|
|
|
CREATE FUNCTION functest_IS_2(out a int, b int default 1)
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
AS 'SELECT $1';
|
|
|
|
CREATE FUNCTION functest_IS_3(a int default 1, out b int)
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
AS 'SELECT $1';
|
|
|
|
SELECT routine_name, ordinal_position, parameter_name, parameter_default
|
|
|
|
FROM information_schema.parameters JOIN information_schema.routines USING (specific_schema, specific_name)
|
|
|
|
WHERE routine_schema = 'temp_func_test' AND routine_name ~ '^functest_is_'
|
|
|
|
ORDER BY 1, 2;
|
|
|
|
routine_name | ordinal_position | parameter_name | parameter_default
|
|
|
|
---------------+------------------+----------------+-------------------
|
|
|
|
functest_is_1 | 1 | a |
|
|
|
|
functest_is_1 | 2 | b | 1
|
|
|
|
functest_is_1 | 3 | c | 'foo'::text
|
|
|
|
functest_is_2 | 1 | a |
|
|
|
|
functest_is_2 | 2 | b | 1
|
|
|
|
functest_is_3 | 1 | a | 1
|
|
|
|
functest_is_3 | 2 | b |
|
|
|
|
(7 rows)
|
|
|
|
|
2016-12-28 18:00:00 +01:00
|
|
|
DROP FUNCTION functest_IS_1(int, int, text), functest_IS_2(int), functest_IS_3(int);
|
2021-02-17 17:53:18 +01:00
|
|
|
-- routine usage views
|
|
|
|
CREATE FUNCTION functest_IS_4a() RETURNS int LANGUAGE SQL AS 'SELECT 1';
|
|
|
|
CREATE FUNCTION functest_IS_4b(x int DEFAULT functest_IS_4a()) RETURNS int LANGUAGE SQL AS 'SELECT x';
|
|
|
|
CREATE SEQUENCE functest1;
|
|
|
|
CREATE FUNCTION functest_IS_5(x int DEFAULT nextval('functest1'))
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
AS 'SELECT x';
|
2021-04-07 21:30:08 +02:00
|
|
|
CREATE FUNCTION functest_IS_6()
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
RETURN nextval('functest1');
|
|
|
|
CREATE TABLE functest2 (a int, b int);
|
|
|
|
CREATE FUNCTION functest_IS_7()
|
|
|
|
RETURNS int
|
|
|
|
LANGUAGE SQL
|
|
|
|
RETURN (SELECT count(a) FROM functest2);
|
2021-02-17 17:53:18 +01:00
|
|
|
SELECT r0.routine_name, r1.routine_name
|
|
|
|
FROM information_schema.routine_routine_usage rru
|
|
|
|
JOIN information_schema.routines r0 ON r0.specific_name = rru.specific_name
|
2021-04-08 12:20:11 +02:00
|
|
|
JOIN information_schema.routines r1 ON r1.specific_name = rru.routine_name
|
2021-04-15 22:31:36 +02:00
|
|
|
WHERE r0.routine_schema = 'temp_func_test' AND
|
|
|
|
r1.routine_schema = 'temp_func_test'
|
2021-04-08 12:20:11 +02:00
|
|
|
ORDER BY 1, 2;
|
2021-02-17 17:53:18 +01:00
|
|
|
routine_name | routine_name
|
|
|
|
----------------+----------------
|
|
|
|
functest_is_4b | functest_is_4a
|
|
|
|
(1 row)
|
|
|
|
|
2021-04-15 22:31:36 +02:00
|
|
|
SELECT routine_name, sequence_name FROM information_schema.routine_sequence_usage
|
|
|
|
WHERE routine_schema = 'temp_func_test'
|
|
|
|
ORDER BY 1, 2;
|
2021-02-17 17:53:18 +01:00
|
|
|
routine_name | sequence_name
|
|
|
|
---------------+---------------
|
|
|
|
functest_is_5 | functest1
|
2021-04-07 21:30:08 +02:00
|
|
|
functest_is_6 | functest1
|
|
|
|
(2 rows)
|
2021-02-17 17:53:18 +01:00
|
|
|
|
2021-04-15 22:31:36 +02:00
|
|
|
SELECT routine_name, table_name, column_name FROM information_schema.routine_column_usage
|
|
|
|
WHERE routine_schema = 'temp_func_test'
|
|
|
|
ORDER BY 1, 2;
|
2021-04-07 21:30:08 +02:00
|
|
|
routine_name | table_name | column_name
|
|
|
|
---------------+------------+-------------
|
|
|
|
functest_is_7 | functest2 | a
|
|
|
|
(1 row)
|
2021-02-17 17:53:18 +01:00
|
|
|
|
2021-04-15 22:31:36 +02:00
|
|
|
SELECT routine_name, table_name FROM information_schema.routine_table_usage
|
|
|
|
WHERE routine_schema = 'temp_func_test'
|
|
|
|
ORDER BY 1, 2;
|
2021-04-07 21:30:08 +02:00
|
|
|
routine_name | table_name
|
|
|
|
---------------+------------
|
|
|
|
functest_is_7 | functest2
|
|
|
|
(1 row)
|
2021-02-17 17:53:18 +01:00
|
|
|
|
|
|
|
DROP FUNCTION functest_IS_4a CASCADE;
|
|
|
|
NOTICE: drop cascades to function functest_is_4b(integer)
|
|
|
|
DROP SEQUENCE functest1 CASCADE;
|
2021-04-07 21:30:08 +02:00
|
|
|
NOTICE: drop cascades to 2 other objects
|
|
|
|
DETAIL: drop cascades to function functest_is_5(integer)
|
|
|
|
drop cascades to function functest_is_6()
|
|
|
|
DROP TABLE functest2 CASCADE;
|
|
|
|
NOTICE: drop cascades to function functest_is_7()
|
2017-03-10 05:58:48 +01:00
|
|
|
-- overload
|
|
|
|
CREATE FUNCTION functest_B_2(bigint) RETURNS bool LANGUAGE 'sql'
|
|
|
|
IMMUTABLE AS 'SELECT $1 > 0';
|
|
|
|
DROP FUNCTION functest_b_1;
|
|
|
|
DROP FUNCTION functest_b_1; -- error, not found
|
|
|
|
ERROR: could not find a function named "functest_b_1"
|
|
|
|
DROP FUNCTION functest_b_2; -- error, ambiguous
|
|
|
|
ERROR: function name "functest_b_2" is not unique
|
|
|
|
HINT: Specify the argument list to select the function unambiguously.
|
2018-03-02 14:57:38 +01:00
|
|
|
-- CREATE OR REPLACE tests
|
|
|
|
CREATE FUNCTION functest1(a int) RETURNS int LANGUAGE SQL AS 'SELECT $1';
|
|
|
|
CREATE OR REPLACE FUNCTION functest1(a int) RETURNS int LANGUAGE SQL WINDOW AS 'SELECT $1';
|
|
|
|
ERROR: cannot change routine kind
|
|
|
|
DETAIL: "functest1" is a function.
|
|
|
|
CREATE OR REPLACE PROCEDURE functest1(a int) LANGUAGE SQL AS 'SELECT $1';
|
|
|
|
ERROR: cannot change routine kind
|
|
|
|
DETAIL: "functest1" is a function.
|
|
|
|
DROP FUNCTION functest1(a int);
|
2021-04-07 21:30:08 +02:00
|
|
|
-- inlining of set-returning functions
|
|
|
|
CREATE FUNCTION functest_sri1() RETURNS SETOF int
|
|
|
|
LANGUAGE SQL
|
|
|
|
STABLE
|
|
|
|
AS '
|
|
|
|
VALUES (1), (2), (3);
|
|
|
|
';
|
|
|
|
SELECT * FROM functest_sri1();
|
|
|
|
functest_sri1
|
|
|
|
---------------
|
|
|
|
1
|
|
|
|
2
|
|
|
|
3
|
|
|
|
(3 rows)
|
|
|
|
|
|
|
|
EXPLAIN (verbose, costs off) SELECT * FROM functest_sri1();
|
|
|
|
QUERY PLAN
|
|
|
|
------------------------------
|
|
|
|
Values Scan on "*VALUES*"
|
|
|
|
Output: "*VALUES*".column1
|
|
|
|
(2 rows)
|
|
|
|
|
|
|
|
CREATE FUNCTION functest_sri2() RETURNS SETOF int
|
|
|
|
LANGUAGE SQL
|
|
|
|
STABLE
|
|
|
|
BEGIN ATOMIC
|
|
|
|
VALUES (1), (2), (3);
|
|
|
|
END;
|
|
|
|
SELECT * FROM functest_sri2();
|
|
|
|
functest_sri2
|
|
|
|
---------------
|
|
|
|
1
|
|
|
|
2
|
|
|
|
3
|
|
|
|
(3 rows)
|
|
|
|
|
|
|
|
EXPLAIN (verbose, costs off) SELECT * FROM functest_sri2();
|
|
|
|
QUERY PLAN
|
|
|
|
------------------------------
|
|
|
|
Values Scan on "*VALUES*"
|
|
|
|
Output: "*VALUES*".column1
|
|
|
|
(2 rows)
|
|
|
|
|
2018-03-16 17:48:13 +01:00
|
|
|
-- Check behavior of VOID-returning SQL functions
|
|
|
|
CREATE FUNCTION voidtest1(a int) RETURNS VOID LANGUAGE SQL AS
|
|
|
|
$$ SELECT a + 1 $$;
|
|
|
|
SELECT voidtest1(42);
|
|
|
|
voidtest1
|
|
|
|
-----------
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
CREATE FUNCTION voidtest2(a int, b int) RETURNS VOID LANGUAGE SQL AS
|
|
|
|
$$ SELECT voidtest1(a + b) $$;
|
|
|
|
SELECT voidtest2(11,22);
|
|
|
|
voidtest2
|
|
|
|
-----------
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
-- currently, we can inline voidtest2 but not voidtest1
|
|
|
|
EXPLAIN (verbose, costs off) SELECT voidtest2(11,22);
|
|
|
|
QUERY PLAN
|
|
|
|
-------------------------
|
|
|
|
Result
|
|
|
|
Output: voidtest1(33)
|
|
|
|
(2 rows)
|
|
|
|
|
|
|
|
CREATE TEMP TABLE sometable(f1 int);
|
|
|
|
CREATE FUNCTION voidtest3(a int) RETURNS VOID LANGUAGE SQL AS
|
|
|
|
$$ INSERT INTO sometable VALUES(a + 1) $$;
|
|
|
|
SELECT voidtest3(17);
|
|
|
|
voidtest3
|
|
|
|
-----------
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
CREATE FUNCTION voidtest4(a int) RETURNS VOID LANGUAGE SQL AS
|
|
|
|
$$ INSERT INTO sometable VALUES(a - 1) RETURNING f1 $$;
|
|
|
|
SELECT voidtest4(39);
|
|
|
|
voidtest4
|
|
|
|
-----------
|
|
|
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
TABLE sometable;
|
|
|
|
f1
|
|
|
|
----
|
|
|
|
18
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38
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(2 rows)
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CREATE FUNCTION voidtest5(a int) RETURNS SETOF VOID LANGUAGE SQL AS
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$$ SELECT generate_series(1, a) $$ STABLE;
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SELECT * FROM voidtest5(3);
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voidtest5
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-----------
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(0 rows)
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-- Cleanup
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2012-02-14 04:20:27 +01:00
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DROP SCHEMA temp_func_test CASCADE;
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2021-04-07 21:30:08 +02:00
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NOTICE: drop cascades to 30 other objects
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2019-03-25 00:15:37 +01:00
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DETAIL: drop cascades to function functest_a_1(text,date)
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drop cascades to function functest_a_2(text[])
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drop cascades to function functest_a_3()
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drop cascades to function functest_b_2(integer)
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drop cascades to function functest_b_3(integer)
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drop cascades to function functest_b_4(integer)
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drop cascades to function functest_c_1(integer)
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drop cascades to function functest_c_2(integer)
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drop cascades to function functest_c_3(integer)
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drop cascades to function functest_e_1(integer)
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drop cascades to function functest_e_2(integer)
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drop cascades to function functest_f_1(integer)
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drop cascades to function functest_f_2(integer)
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drop cascades to function functest_f_3(integer)
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drop cascades to function functest_f_4(integer)
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2021-04-07 21:30:08 +02:00
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drop cascades to function functest_s_1(text,date)
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drop cascades to function functest_s_2(text[])
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drop cascades to function functest_s_3()
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drop cascades to function functest_s_3a()
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drop cascades to function functest_s_10(text,date)
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drop cascades to function functest_s_13()
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drop cascades to function functest_s_15(integer)
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2019-03-25 00:15:37 +01:00
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drop cascades to function functest_b_2(bigint)
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2021-04-07 21:30:08 +02:00
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drop cascades to function functest_sri1()
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drop cascades to function functest_sri2()
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2019-03-25 00:15:37 +01:00
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drop cascades to function voidtest1(integer)
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drop cascades to function voidtest2(integer,integer)
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drop cascades to function voidtest3(integer)
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drop cascades to function voidtest4(integer)
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drop cascades to function voidtest5(integer)
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2016-07-18 00:42:31 +02:00
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DROP USER regress_unpriv_user;
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2012-02-14 04:20:27 +01:00
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RESET search_path;
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