pg的function的編寫

語法

CREATE OR REPLACE FUNCTION public.em_quick_query(
    IN userid character varying,
    IN orgid character varying)
  RETURNS TABLE(id bigint, parent_id bigint) AS
$BODY$
BEGIN
    RETURN QUERY EXECUTE 
    `select id,parent_id from ... where xx = ` || id || ` and ...` ;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100
  ROWS 1000;
ALTER FUNCTION public.em_quick_query(character varying, character varying)
  OWNER TO myuser;

呼叫

select * from em_quick_query(201,10)