SQL 查询以获取最后 4 个季度以及年份的最后 2 位数字答案

【问题标题】：SQL Query to get last 4 Quarters with last 2 digit of YearSQL 查询以获取最后 4 个季度以及年份的最后 2 位数字
【发布时间】：2019-02-20 09:47:21
【问题描述】：

我需要从表中获取最后 4 条记录，并且它的记录具有列值，例如“19Q1”、“18Q4”。

使用下面的查询我可以得到最后 4 个季度，但有没有最简单的查询形式。

SELECT CAST(DATEPART(QUARTER,  CONVERT(DATE, DATEADD(q, DATEDIFF(q,0,DATEADD(q,0,GETDATE())), 0) )) as VARCHAR) + 'Q' + CAST(Right(Cast(Year(DATEADD(q, DATEDIFF(q,0,DATEADD(q,0,GETDATE())), 0) ) As varchar(4)),2) as VARCHAR) as Period
SELECT CAST(DATEPART(QUARTER,  CONVERT(DATE, DATEADD(q, DATEDIFF(q,0,DATEADD(q,-1,GETDATE())), 0) )) as VARCHAR) + 'Q' + CAST(Right(Cast(Year(DATEADD(q, DATEDIFF(q,0,DATEADD(q,-1,GETDATE())), 0) ) As varchar(4)),2) as VARCHAR) as Period
SELECT CAST(DATEPART(QUARTER,  CONVERT(DATE, DATEADD(q, DATEDIFF(q,0,DATEADD(q,-2,GETDATE())), 0) )) as VARCHAR) + 'Q' + CAST(Right(Cast(Year(DATEADD(q, DATEDIFF(q,0,DATEADD(q,-2,GETDATE())), 0) ) As varchar(4)),2) as VARCHAR) as Period
SELECT CAST(DATEPART(QUARTER,  CONVERT(DATE, DATEADD(q, DATEDIFF(q,0,DATEADD(q,-3,GETDATE())), 0) )) as VARCHAR) + 'Q' + CAST(Right(Cast(Year(DATEADD(q, DATEDIFF(q,0,DATEADD(q,-3,GETDATE())), 0) ) As varchar(4)),2) as VARCHAR) as Period

O/P：

1Q19
4Q18
3Q18
2Q18

【问题讨论】：

标签： sql-server sql-server-2008 sql-server-2012 sql-server-2008-r2

【解决方案1】：

假设您使用的是 2012（因为您已经标记了 3 个不同版本的 SQL Server...）怎么样：

SELECT CONCAT(DATEPART(QUARTER,Q.D),'Q',RIGHT(DATEPART(YEAR,Q.D),2))
FROM (VALUES(0),(-1),(-2),(-3)) V(i)
     CROSS APPLY (VALUES(DATEADD(QUARTER,V.i,GETDATE()))) Q(D);

【讨论】：

【解决方案2】：

SELECT CAST( DATEPART(q, DATEADD(q, -v.num, d.CurrentDate) ) AS VARCHAR(1)) 
+ 'Q'
+ RIGHT( CAST( DATEPART(yyyy, DATEADD(q, -v.num, d.CurrentDate)) AS VARCHAR(4) ), 2 )
FROM ( VALUES ( GETDATE() ) ) d(CurrentDate)
    CROSS JOIN ( VALUES (0), (1), (2), (3) ) v(num)
ORDER BY DATEADD(q, -v.num, d.CurrentDate) DESC

【讨论】：

【解决方案3】：

获取前 5 个季度加上 Qx - 格式年份的当前季度开始日期

--QCurrent
select DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) + 0, 0) as QCurrentStartDate, 
'Q' + cast(datepart(quarter,( DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) + 0, 0))) as nvarchar(6)) + ' - ' 
+ cast(datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) + 0, 0))) as nvarchar(6)) as QLast

--LastQuarter
select DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 1, 0) as LastQuarterStartDate, 
'Q' + cast(datepart(quarter,( DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 1, 0))) as nvarchar(6)) + ' - ' 
+ cast(datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) + 1, 0))) as nvarchar(6)) as QCurrent

--SecondQuarterBack
select DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 2, 0) as SecondQuarterStartDate, 
'Q' + cast(datepart(quarter,( DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 2, 0))) as nvarchar(6)) + ' - ' 
+ cast(datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 2, 0))) as nvarchar(6)) as SecondCurrent

--ThreeQuarterBack
select DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 3, 0) as SecondQuarterStartDate, 
'Q' + cast(datepart(quarter,( DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 3, 0))) as nvarchar(6)) + ' - ' 
+ cast(datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 3, 0))) as nvarchar(6)) as SecondCurrent

--FourQuarterBack
select DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 4, 0) as SecondQuarterStartDate, 
'Q' + cast(datepart(quarter,( DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) - 4, 0))) as nvarchar(6)) + ' - ' 
+ cast(datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) -4, 0))) as nvarchar(6)) as SecondCurrent

select datepart(year, (DATEADD(qq, DATEDIFF(qq, 0, GETDATE()) -4, 0)))

select format(getdate(), 'yy')

【讨论】：