可能重复:
两个日期之间的月份
我有日期范围现在[start date] = '2012-09-01'
,[finish date] = '2014-01-01'
我需要显示两个日期之间的月份..使用单个选择语句
Expected Output :
9
10
11
12
1
2
3
.
.
.
12
1
我怎样才能做到这一点?
可能重复:
两个日期之间的月份
我有日期范围现在[start date] = '2012-09-01'
,[finish date] = '2014-01-01'
我需要显示两个日期之间的月份..使用单个选择语句
Expected Output :
9
10
11
12
1
2
3
.
.
.
12
1
我怎样才能做到这一点?
DECLARE @StartDate DATETIME,
@EndDate DATETIME;
SELECT @StartDate = '20120901'
,@EndDate = '20140101';
;WITH MONTHS (date)
AS
(
SELECT @StartDate
UNION ALL
SELECT DATEADD(MONTH,1,date)
FROM MONTHS
WHERE DATEADD(MONTH,1,date)<=@EndDate
)
SELECT MONTH(date) AS MONTH FROM MONTHS
结果:
MONTH
-----------
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
(17 row(s) affected)
编辑:根据您更新的要求,您可以使用以下查询实现此目的:
DECLARE @StartDate DATETIME,
@EndDate DATETIME;
SELECT @StartDate = '20120901'
,@EndDate = '20140101';
SELECT MONTH(DATEADD(MONTH, x.number, @StartDate)) AS Months
FROM master.dbo.spt_values x
WHERE x.type = 'P'
AND x.number <= DATEDIFF(MONTH, @StartDate, @EndDate);
结果:
Months
-----------
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
(17 row(s) affected)
您还可以使用表变量:
DECLARE @startdt DATETIME, @enddt DATETIME
SELECT @startdt = '2012-09-01', @enddt = '2014-01-01'
DECLARE @Months TABLE (Months INT)
INSERT INTO @Months VALUES (MONTH(@startdt))
WHILE @startdt < @enddt
BEGIN
SET @startdt = DATEADD(MONTH,1,@startdt)
INSERT INTO @Months VALUES (MONTH(@startdt))
END
SELECT * FROM @Months