CREATE OR REPLACE FUNCTION public.fx(i integer, OUT a text, OUT b text) RETURNS SETOF record LANGUAGE plpgsql AS $function$ BEGIN RETURN QUERY SELECT 'foo'||id, 'bar'||id FROM generate_series(1,i) g(id); RETURN; END; $function$
I supose this is simple, but I did not find a solution in the documentation.
I would like to be able to do something like this:
select myfunc('foo','bar'); or select myfunc(foo, bar) from foobartable; or even select myfunc(foo, bar), 'baz' as baz from foobartable;
Which should return something like this: foo | bar ------+------ foo1 | bar1 foo2 | bar2 foo3 | bar3 foo4 | bar4 (4 rows)
So the output should be at least two columns and (usually) more than one row.
What I currently have is the following, which is mostly it. Unfortunately it gives me only one column (I really need two) and I would have to create a custom type:
CREATE TYPE t_foobar AS (foo text, bar text);
CREATE or REPLACE FUNCTION myfunc(foo text, bar text) returns SETOF t_foobar as $$ BEGIN FOR i IN 1..4 LOOP RETURN NEXT (foo || i::text, bar || i::text); END LOOP; RETURN; END; $$ language 'plpgsql';
