On 2020-11-18 17:07, Adrian Klaver
wrote:
\d cell_per
Foreign table "public.cell_per"
Column | Type | Collation | Nullable | Default | FDW options
----------+-------------------+-----------+----------+---------+-------------
category | character varying | | | |
cell_per | integer | | | |
Server: test_db
CREATE OR REPLACE FUNCTION public.type_test()
RETURNS cell_per
LANGUAGE plpgsql
AS $function$
DECLARE
cp_type cell_per;
BEGIN
SELECT INTO cp_type * from cell_per limit 1;
RETURN cp_type;
END;
$function$
select * from type_test();
category | cell_per
------------+----------
H PREM 3.5 | 18
You can change the RETURNS to RETURNS SETOF and return multiple rows.
I might be stupid, but where in the document for create function does it say that the return type can be a table?
From the doc for version 13
https://www.postgresql.org/docs/13/sql-createfunction.html
"rettype-
The return data type (optionally schema-qualified). The return type can be a base, composite, or domain type, or can reference the type of a table column."
