發現pg的資料很少，去IOE的風估計要吹一段時間。pg會越來越流行。

1.返回record

CREATE OR REPLACE FUNCTION "public"."select_rs_record"(stat_end_time varchar)
  RETURNS SETOF "pg_catalog"."record" AS $BODY$DECLARE 
	select_result record;
BEGIN
--時間處理

--遍歷返回資料
	for select_result in 
		SELECT
			T .stat_time,
			T .field2
		FROM
			test T
		WHERE
			stat_time >= stat_end_time 
		AND stat_time < stat_end_time 
		AND time_type = '1'
  loop
   return next select_result;
  end loop;
 RETURN  ; 
END 


$BODY$
  LANGUAGE 'plpgsql' VOLATILE COST 100
 ROWS 1000
;
 

檢視 資料：

select stat_time,field2 from select_rs_record('2015-07-07')   AS MEMBER (
		stat_time VARCHAR (64),
		field2 VARCHAR (64)
	);

2.直接返回Table

CREATE OR REPLACE FUNCTION "public"."select_rs_table"(stat_end_time varchar)
  RETURNS TABLE(
		stat_time VARCHAR (64),
		field2 VARCHAR (64)
	)  AS $BODY$DECLARE 

BEGIN
--時間處理

--遍歷返回資料
	RETURN  QUERY
		SELECT
			T .stat_time,
			T .field2
		FROM
			test T
		WHERE
			stat_time >= stat_end_time 
		AND stat_time < stat_end_time 
		AND time_type = '1';

END 


$BODY$
  LANGUAGE 'plpgsql' VOLATILE COST 100
 ROWS 1000
;
 

select stat_time,field2 from select_rs_table('2015-07-07');