acc=>
CREATE OR REPLACE FUNCTION add_user (TEXT, TEXT, TEXT, TEXT)
RETURNS usr AS $$
INSERT INTO usr (login,pass,name,email) VALUES ($1,$2,$3,$4)
RETURNING usr.*;
$$ LANGUAGE sql SECURITY DEFINER;
acc=>
ERROR: return type mismatch in function declared to return usr
DETAIL: Function's final statement must be a SELECT.
CONTEXT: SQL function "add_user"
SURPRISE :-) SURPRISE :-)