Question

在SQL Server 2005中如何创建自定义日历以仅显示Month＆amp; Year指定的日期范围。样本输出将是

Declare @startdate DateTime, @enddate DateTime;
Select @startdate = '2014-01-01', @enddate = '2018-12-31'



Month    Year
January  2014
February 2014
March    2014
April    2014
May      2014
June     2014
July     2014
August   2014
September2014 
October  2014
November 2014
December 2014

....继续执行日历中列出的其他年份。

EDIT 并且每年每3个月有一个季度，所以你会在日历中看到

Q1   ---- 2014
January ---- 2014
February ---- 2014
March ---- 2014
Q2 ---- 2014

等。等

Answer 1

您可以使用以下recursive CTE：

Declare @startdate DateTime, @enddate DateTime;
Select @startdate = '2014-01-01', @enddate = '2018-12-31'

;WITH Calendar AS (
   SELECT DATENAME(month, @startdate) AS [Month],
          YEAR(@startdate) AS [Year],
          d = @startdate           

   UNION ALL   

   SELECT DATENAME(month, DATEADD(month, 1, d)) AS [Month],
          YEAR(DATEADD(month, 1, d)) AS [Year],                     
          d = DATEADD(month, 1, d)
   FROM Calendar
   WHERE DATEADD(month, 1, d) <= @enddate
)
SELECT [Month], [Year]
FROM Calendar

CTE的锚点成员只是开始日期。 CTE的递归成员不断将下个月添加到结果集，直到结束日期为止。

上述查询产生的结果集是：

Month    Year
==================
January  2014
February 2014
March    2014
....
November 2018
December 2018

修改

如果要将季度添加到结果集中，会有点复杂：

Declare @startdate DateTime, @enddate DateTime; Select @startdate = '2014-01-01', @enddate = '2018-12-31' ;WITH Calendar AS ( SELECT CAST('Q1' AS VARCHAR(10)) AS [Month], CAST('2014' AS CHAR(4)) AS [Year], d = DATEADD(month, -1, @startdate), CAST(0.5 AS FLOAT) AS rn UNION ALL SELECT (CASE WHEN rn = 12 THEN CAST('Q1' AS VARCHAR(10)) WHEN FLOOR(rn) = rn AND CAST(rn AS INT) % 3 = 0 THEN CAST('Q' + CAST(rn / 3 + 1 AS VARCHAR(10)) AS VARCHAR(10)) ELSE CAST(DATENAME(month, DATEADD(month, 1, d)) AS VARCHAR(10)) END) AS [Month], CAST(YEAR(DATEADD(month, 1, d)) AS CHAR(4)) AS [Year], d = CASE WHEN FLOOR(rn) = rn AND CAST(rn AS INT) % 3 = 0 THEN d ELSE DATEADD(month, 1, d) END, rn = CASE WHEN rn = 12 THEN 0.5 WHEN FLOOR(rn) = rn AND CAST(rn AS INT) % 3 = 0 THEN rn + 0.5 WHEN FLOOR(rn) < rn THEN rn + 0.5 ELSE rn + 1 END FROM Calendar WHERE DATEADD(month, 1, d) <= @enddate ) SELECT [Month], [Year] FROM Calendar

<强>输出：

Month Year ============== Q1 2014 January 2014 February 2014 March 2014 Q2 2014 April 2014 ..... Q3 2018 July 2018 August 2018 September 2018 Q4 2018 October 2018 November 2018 December 2018

Answer 2

Giorgos答案是最好的解决方案，但这个也会有效......

Declare @begin DateTime, @end DateTime
Select @begin = '2011-01-01', @end = '2014-12-31'

Create Table MonthYear
(Year Int, Month varchar(1000))

While @begin <= @end
Begin
  Insert Into dbo.MonthYear (Year, Month)
  Select DatePart(yy, @begin) As Year,
  DateName(MM, @begin) As Month
  Set @begin = DateAdd(Month, 1, @begin)
End

自定义SQL日历

2 个答案: