Hello
When I derive domain from some type I expect same castings rules.
Minimally for literals. But it's not true:
CREATE DOMAIN sixc AS char(6) NOT NULL;
CREATE OR REPLACE FUNCTION fxx(sixc)
RETURNS sixc AS $$
SELECT 'abcdef'; -- Actual return type is unknown.
$$ LANGUAGE SQL;
SELECT fxx('abcdef');
-- ok
CREATE OR REPLACE FUNCTION fxx(sixc)
RETURNS char(6) AS $$
SELECT 'abcdef';
$$ LANGUAGE SQL;
Regards
Pavel Stehule
