-- -- acs_mail_link__link_p/1 -- create or replace function acs_mail_link__link_p( integer ) returns bool as $$ declare p_object_id alias for $1; v_check_link_id integer; begin select count(mail_link_id) into v_check_link_id from acs_mail_links where mail_link_id = p_object_id; if v_check_link_id <> 0 then return 't'; else return 'f'; end if; end; $$ language plpgsql;