Question

我希望收到给定日期（startDate和EndDate参数）之间的季度列表。

例如部分季度日期：

StartDate : 2017-01-01
EndDate : 2017-06-15
Result : Q1 Q2

另一个样本：

StartDate : 2017-01-01
EndDate : 2017-06-30
Result : Q2

Answer 1

你可以试试这样的事情，如果你要列出很多季度，你需要覆盖最大的递归：

DECLARE @start_date DATE = '20170101';
DECLARE @end_date DATE = '20170615';
WITH x AS (
    SELECT
        YEAR(@start_date) AS [year],
        DATEPART(QUARTER, @start_date) AS [quarter]
    UNION ALL
    SELECT
        CASE 
            WHEN [quarter] = 4 THEN [year] + 1
            ELSE [year]
        END AS [year],
        CASE
            WHEN [quarter] = 4 THEN 1
            ELSE [quarter] + 1 
        END AS [quarter]
    FROM
        x
    WHERE
        [year] <= YEAR(@end_date)
        AND [quarter] < DATEPART(QUARTER, @end_date))
SELECT * FROM x;

Answer 2

如果对TVF开放。我会经常使用表格值函数来返回动态日期时间范围。

示例 - 行

Select *
      ,Qtr='Q'+DateName(QUARTER,RetVal)
 from [dbo].[tvf-Range-Date]('2017-01-01','2017-06-15','QQ',1)

<强>返回

RetSeq  RetVal      Qtr
1       2017-01-01  Q1
2       2017-04-01  Q2

示例 - 单字符串

Select Qtr = Stuff((Select Distinct ' ' + 'Q'+DateName(QUARTER,RetVal) 
                     From  [dbo].[tvf-Range-Date]('2017-01-01','2017-06-15','QQ',1) 
                     For XML Path ('')),1,1,'')

<强>返回

Qtr
Q1 Q2

感兴趣的UDF

CREATE FUNCTION [dbo].[tvf-Range-Date] (@R1 datetime,@R2 datetime,@Part varchar(10),@Incr int)
Returns Table
Return (
    with cte0(M)   As (Select 1+Case @Part When 'YY' then DateDiff(YY,@R1,@R2)/@Incr When 'QQ' then DateDiff(QQ,@R1,@R2)/@Incr When 'MM' then DateDiff(MM,@R1,@R2)/@Incr When 'WK' then DateDiff(WK,@R1,@R2)/@Incr When 'DD' then DateDiff(DD,@R1,@R2)/@Incr When 'HH' then DateDiff(HH,@R1,@R2)/@Incr When 'MI' then DateDiff(MI,@R1,@R2)/@Incr When 'SS' then DateDiff(SS,@R1,@R2)/@Incr End),
         cte1(N)   As (Select 1 From (Values(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) N(N)),
         cte2(N)   As (Select Top (Select M from cte0) Row_Number() over (Order By (Select NULL)) From cte1 a, cte1 b, cte1 c, cte1 d, cte1 e, cte1 f, cte1 g, cte1 h ),
         cte3(N,D) As (Select 0,@R1 Union All Select N,Case @Part When 'YY' then DateAdd(YY, N*@Incr, @R1) When 'QQ' then DateAdd(QQ, N*@Incr, @R1) When 'MM' then DateAdd(MM, N*@Incr, @R1) When 'WK' then DateAdd(WK, N*@Incr, @R1) When 'DD' then DateAdd(DD, N*@Incr, @R1) When 'HH' then DateAdd(HH, N*@Incr, @R1) When 'MI' then DateAdd(MI, N*@Incr, @R1) When 'SS' then DateAdd(SS, N*@Incr, @R1) End From cte2 )

    Select RetSeq = N+1
          ,RetVal = D 
     From  cte3,cte0 
     Where D<=@R2
)
/*
Max 100 million observations -- Date Parts YY QQ MM WK DD HH MI SS
Syntax:
Select * from [dbo].[tvf-Range-Date]('2016-10-01','2020-10-01','YY',1) 
Select * from [dbo].[tvf-Range-Date]('2016-01-01','2017-01-01','MM',1) 
Select * from [dbo].[tvf-Range-Date]('2017-01-01','2017-01-02','MI',15) 
*/

获取两个日期之间的季度列表（SQL）

2 个答案: