Create cast as a non-superuser user with Postgresql

Question

I have a specific need to create a new cast in postgresql 9.6:

CREATE OR REPLACE FUNCTION boolean_to_float(b boolean) RETURNS float AS $$
SELECT b::int::float;$$ LANGUAGE SQL;
DROP CAST IF EXISTS (boolean as float);
CREATE CAST (boolean AS float) WITH FUNCTION boolean_to_float(boolean) ;

Unfortunately, I got the following response:

ERROR:  must be owner of type boolean or type double precision

The database is owned by the user I am using. Is it possible to force the DROP/CREATE CAST ?

Answer 1

正如错误消息所说：你必须以用户postgres身份连接才能做到这一点。