text: SELECT name, setting FROM pg_settings WHERE name LIKE 'enable%';
  
  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;
  
  -- function with implicit LATERAL
  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;
  
  -- function in subselect
  select * from foo2 where f2 in (select f2 from foot(1) z where z.fooid = foo2.fooid) ORDER BY 1,2;
  
  -- function in subselect
  select * from foo2 where f2 in (select f2 from foot(foo2.fooid) z where z.fooid = 1) ORDER BY 1,2;
  
  -- nested functions
  select foot.fooid, foot.f2 from foot(sin(pi()/2)::int) ORDER BY 1,2;
  
  CREATE TABLE foo (fooid int, foosubid int, fooname text, primary key(fooid,foosubid));
  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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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);
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1) AS
  (fooid int, foosubid int, fooname text);
  SELECT * FROM vw_getfoo;
  
  -- 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);
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1) AS
  (fooid int, foosubid int, fooname text);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  -- 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;
  CREATE VIEW vw_getfoo AS SELECT * FROM getfoo(1);
  SELECT * FROM vw_getfoo;
  
  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));
  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;
  
  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;
  
  CREATE TABLE barrescan (fooid int primary key);
  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;
  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;
  
  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;
  
  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;
  
  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);
  SELECT * FROM foo(42);
  SELECT * FROM foo(42) AS p(x);
  
  -- 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;
  -- 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;
  CREATE OR REPLACE FUNCTION foo(in f1 int, out f2 int, out f3 text)
  RETURNS record
  AS 'select $1+1' LANGUAGE sql;
  
  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;
  SELECT * FROM foor(42);
  SELECT * FROM foor(42) AS p(a,b);
  
  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;
  SELECT * FROM foob(42, 99);
  SELECT * FROM foob(42, 99) AS p(a,b);
  
  -- 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);
  SELECT dup('xyz');	-- fails
  SELECT dup('xyz'::text);
  SELECT * FROM dup('xyz'::text);
  
  -- 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;
  
  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);
  
  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;
  
  --
  -- 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();
  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);
  DROP FUNCTION foo(int);
  
  -- case that causes change of typmod knowledge during inlining
  CREATE OR REPLACE FUNCTION foo()
  RETURNS TABLE(a varchar(5))
  AS $$ SELECT 'hello'::varchar(5) $$ LANGUAGE sql STABLE;
  SELECT * FROM foo() GROUP BY 1;
  DROP FUNCTION foo();
  
  --
  -- some tests on SQL functions with RETURNING
  --
  
  create temp table tt(f1 serial, data text);
  
  create function insert_tt(text) returns int as
  $$ insert into tt(data) values($1) returning f1 $$
  language sql;
  
  select insert_tt('foo');
  select insert_tt('bar');
  select * from tt;
  
  -- 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');
  select * from tt;
  
  -- 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');
  select * from insert_tt2('baz','quux');
  select * from tt;
  
  -- limit doesn't prevent execution to completion
  select insert_tt2('foolish','barrish') limit 1;
  select * from tt;
  
  -- 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;
  select * from tt;
  
  -- 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;
  select * from tt;
  -- note that nextval() gets executed a second time in the rule expansion,
  -- which is expected.
  select * from tt_log;
  
  -- 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;
  reset work_mem;
  select t.a, t, t.a from foo1(10000) t limit 1;
  
  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']);
  select * from array_to_set(array['one', 'two']) as t(f1 int,f2 text);
  select * from array_to_set(array['one', 'two']); -- fail
  
  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();
  select * from testfoo() as t(f1 int8,f2 int8);
  select * from testfoo(); -- fail
  
  drop function testfoo();
  
  create function testfoo() returns setof record as $$
    insert into foo values (1,2), (3,4) returning *;
  $$ language sql;
  
  select testfoo();
  select * from testfoo() as t(f1 int8,f2 int8);
  select * from testfoo(); -- fail
  
  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();
  SELECT * FROM get_first_user();
  
  create or replace function get_users() returns setof users as
  $$ SELECT * FROM users ORDER BY userid; $$
  language sql stable;
  
  SELECT get_users();
  SELECT * FROM get_users();
  
  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();
  select * from foobar();
  
  drop function foobar();
  
  -- check handling of a SQL function with multiple OUT params (bug #5777)
  
  create or replace function foobar(out integer, out numeric) as
  $$ select (1, 2.1) $$ language sql;
  
  select * from foobar();
  
  create or replace function foobar(out integer, out numeric) as
  $$ select (1, 2) $$ language sql;
  
  select * from foobar();  -- fail
  
  create or replace function foobar(out integer, out numeric) as
  $$ select (1, 2.1, 3) $$ language sql;
  
  select * from foobar();  -- fail
  
  drop function foobar();
  
  -- check behavior when a function's input sometimes returns a set (bug #8228)
  
  SELECT *,
    lower(CASE WHEN id = 2 THEN (regexp_matches(str, '^0*([1-9]\d+)$'))[1]
          ELSE str
          END)
  FROM
    (VALUES (1,''), (2,'0000000049404'), (3,'FROM 10000000876')) v(id, str);
  