这里有更多关于 Erwin 建议的临时表解决方法的详细信息，这应该是问题的真正答案，因为这个问题更适合“在开发过程中，如何快速编写带有选择的代码块并查看结果” 而不是解决这个实际查询（从一开始的根本问题是“如何快速开发/调试表值函数”）。
虽然我必须说我想对 generate_series 部分投票 100 次 ;)
可以将结果选择到临时表中，
然后从 do 块外的临时表中进行选择，
如下所示：
DO $$
DECLARE r record;
DECLARE i integer;
DECLARE __iStartYear integer;
DECLARE __iStartMonth integer;
DECLARE __iEndYear integer;
DECLARE __iEndMonth integer;
DECLARE __mytext character varying(200);
BEGIN
i:= 5;
-- Using Raise:
-- http://www.java2s.com/Code/PostgreSQL/Postgre-SQL/UsingRAISENOTICE.htm
--RAISE NOTICE 'test'
--RAISE NOTICE 'test1' || 'test2';
__mytext := 'Test message';
--RAISE NOTICE __mytext;
RAISE NOTICE '%', __mytext;
RAISE NOTICE '%', 'arg1' || 'arg2';
RAISE NOTICE '% %', 'arg1', 'arg2';
--SQL Standard: "CAST( value AS text )" [or varchar]
--PostgreSQL short-hand: "value::text"
__mytext := 'Test ' || i::text;
RAISE NOTICE '%', __mytext;
__mytext := 'mynumber: ' || CAST(i as varchar(33)) || '%';
RAISE NOTICE '%', __mytext;
__iStartYear := 2012;
__iStartMonth := 4;
__iEndYear := 2016;
__iEndMonth := 1;
--PERFORM 'abc';
--CREATE TEMP TABLE mytable AS SELECT * FROM orig_table;
--DROP TABLE table_name CASCADE;
--DROP TABLE IF EXISTS table_name CASCADE;
--DROP TABLE IF EXISTS tbl;
--CREATE TEMP TABLE tbl AS SELECT 1 as a,2 as b,3 as c;
DROP TABLE IF EXISTS mytable;
CREATE TEMP TABLE mytable AS
WITH RECURSIVE CTE
AS
(
SELECT
--__iStartYear AS TheStartYear
__iStartMonth AS TheRunningMonth
,__iStartYear AS TheYear
,__iStartMonth AS TheMonth
UNION ALL
SELECT
--CTE.TheStartYear AS TheStartYear
--__iStartYear AS TheStartYear
CTE.TheRunningMonth + 1 AS TheRunningMonth
--,CTE.TheStartYear + (CTE.TheRunningMonth / 12) AS TheYear
,__iStartYear + (CTE.TheRunningMonth / 12) AS TheYear
,(CTE.TheMonth + 1 -1) % 12 + 1 AS TheMonth
FROM CTE
WHERE (1=1)
AND
(
CASE
--WHEN (CTE.TheStartYear + (CTE.TheRunningMonth / 12) ) < __iEndYear
WHEN (__iStartYear + (CTE.TheRunningMonth / 12) ) < __iEndYear
THEN 1
--WHEN (CTE.TheStartYear + (CTE.TheRunningMonth / 12) ) = __iEndYear
WHEN (__iStartYear + (CTE.TheRunningMonth / 12) ) = __iEndYear
THEN
CASE
WHEN ( (CTE.TheMonth + 1 -1) % 12 + 1 ) <= __iEndMonth
THEN 1
ELSE 0
END
ELSE 0
END = 1
)
)
SELECT * FROM CTE;
-- SELECT __iStartMonth AS TheRunningMonth;
--RAISE NOTICE 'The raise_test() function began.' + CAST( i AS text ) ;
--FOR r IN SELECT table_schema, table_name FROM information_schema.tables WHERE table_type = 'VIEW' AND table_schema = 'public'
--LOOP
-- EXECUTE 'GRANT ALL ON ' || quote_ident(r.table_schema) || '.' || quote_ident(r.table_name) || ' TO webuser';
--END LOOP;
END$$;
SELECT * FROM mytable;
这确实是快速将查询转换为表值函数版本的基础，看起来像这样：
-- SELECT * FROM tfu_V_RPT_MonthList(2012,1,2013,4);
CREATE OR REPLACE FUNCTION tfu_V_RPT_MonthList
(
__iStartYear integer
,__iStartMonth integer
,__iEndYear integer
,__iEndMonth integer
)
RETURNS TABLE(
TheRunningMonth integer
,TheYear integer
,TheMonth integer
) AS
$BODY$
DECLARE
-- Declare vars here
BEGIN
RETURN QUERY
WITH RECURSIVE CTE
AS
(
SELECT
--__iStartYear AS TheStartYear
__iStartMonth AS TheRunningMonth
,__iStartYear AS TheYear
,__iStartMonth AS TheMonth
UNION ALL
SELECT
--CTE.TheStartYear AS TheStartYear
--__iStartYear AS TheStartYear
CTE.TheRunningMonth + 1 AS TheRunningMonth
--,CTE.TheStartYear + (CTE.TheRunningMonth / 12) AS TheYear
,__iStartYear + (CTE.TheRunningMonth / 12) AS TheYear
,(CTE.TheMonth + 1 -1) % 12 + 1 AS TheMonth
FROM CTE
WHERE (1=1)
AND
(
CASE
--WHEN (CTE.TheStartYear + (CTE.TheRunningMonth / 12) ) < __iEndYear
WHEN (__iStartYear + (CTE.TheRunningMonth / 12) ) < __iEndYear
THEN 1
--WHEN (CTE.TheStartYear + (CTE.TheRunningMonth / 12) ) = __iEndYear
WHEN (__iStartYear + (CTE.TheRunningMonth / 12) ) = __iEndYear
THEN
CASE
WHEN ( (CTE.TheMonth + 1 -1) % 12 + 1 ) <= __iEndMonth
THEN 1
ELSE 0
END
ELSE 0
END = 1
)
)
SELECT * FROM CTE ;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
--ALTER FUNCTION dbo.tfu_v_dms_desktop(character varying) OWNER TO postgres;
顺便说一句，看看 SQL-Server 代码膨胀来实现这一点：
SELECT
extract('year' FROM m) AS RPT_Year
-- http://www.postgresql.org/docs/current/interactive/functions-formatting.html#FUNCTIONS-FORMATTING-DATETIME-TABLE
--,to_char(m, 'TMmon')
--,to_char(m, 'TMmonth')
,to_char(m, 'Month') AS RPT_MonthName
,m AS RPT_MonthStartDate
,m + INTERVAL '1 month' - INTERVAL '1 day' AS RPT_MonthEndDate
FROM
(
SELECT
generate_series((2012::text || '-' || 4::text || '-01')::date, (2016::text || '-' || 1::text || '-01')::date, interval '1 month') AS m
) AS g
;
变成这样：
DECLARE @in_iStartYear integer
DECLARE @in_iStartMonth integer
DECLARE @in_iEndYear integer
DECLARE @in_iEndMonth integer
SET @in_iStartYear = 2012
SET @in_iStartMonth = 12
SET @in_iEndYear = 2016
SET @in_iEndMonth = 12
DECLARE @strOriginalLanguage AS nvarchar(200)
DECLARE @dtStartDate AS datetime
DECLARE @dtEndDate AS datetime
SET @strOriginalLanguage = (SELECT @@LANGUAGE)
SET @dtStartDate = DATEADD(YEAR, @in_iStartYear - 1900, 0)
SET @dtStartDate = DATEADD(MONTH, @in_iStartMonth -1, @dtStartDate)
SET @dtEndDate = DATEADD(YEAR, @in_iEndYear - 1900, 0)
SET @dtEndDate = DATEADD(MONTH, @in_iEndMonth -1, @dtEndDate)
SET LANGUAGE 'us_english'
;WITH CTE_YearsMonthStartAndEnd
AS
(
SELECT
YEAR(@dtStartDate) AS RPT_Year
,DATENAME(MONTH, @dtStartDate) AS RPT_MonthName
,@dtStartDate AS RPT_MonthStartDate
,DATEADD(DAY, -1, DATEADD(MONTH, 1, @dtStartDate)) AS RPT_MonthEndDate
UNION ALL
SELECT
YEAR(DATEADD(MONTH, 1, CTE_YearsMonthStartAndEnd.RPT_MonthStartDate)) AS RPT_Year
,DATENAME(MONTH, DATEADD(MONTH, 1, CTE_YearsMonthStartAndEnd.RPT_MonthStartDate)) AS RPT_MonthName
,DATEADD(MONTH, 1, CTE_YearsMonthStartAndEnd.RPT_MonthStartDate) AS RPT_MonthStartDate
,DATEADD(DAY, -1, DATEADD(MONTH, 1, DATEADD(MONTH, 1, CTE_YearsMonthStartAndEnd.RPT_MonthStartDate)) ) AS RPT_MonthEndDate
FROM CTE_YearsMonthStartAndEnd
WHERE DATEADD(MONTH, 1, CTE_YearsMonthStartAndEnd.RPT_MonthStartDate) <= @dtEndDate
)
SELECT
RPT_Year
,RPT_MonthName
,RPT_MonthStartDate
,RPT_MonthEndDate
FROM CTE_YearsMonthStartAndEnd
（感谢欧文！）；）