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 -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs