Question

请帮助我如何将日期范围分为一年。2012年1月1日至2013年10月31日的日期范围应该给我8个季度的结果。结果应该是以下格式，我是使用SQL Server 2008：

Quarter Month start Month end

1   Jan-12  Mar-12
2   Apr-12  Jun-12
3   Jul-12  Sep-12
4   Oct-12  Dec-12
1   Jan-13  Mar-13
2   Apr-13  Jun-13
3   Jul-13  Sep-13
4   Oct-13  Oct-13

Answer 1

你需要查看DATEPART(QUARTER,date)然后以这种方式分解它们。类似于此的东西：

select datepart(year, dateTarget) as theYear, num as theQuarter, min(dateTarget) as startDate, max(dateTarget) as endDate
from numbers
join dates on datepart(quarter, dateper) = num
where num between 1 and 4
group by datepart(year, dateTarget),num

dates表是您正在查看的表格，而numbers是一个数字表格（我发现这些表格非常有用）。

Answer 2

这为您提供了12个quarrters的四分之一开始日期：

with calendar as (
  select 
    --DATEFROMPARTS(year(getdate()),1,1) as [start], 
    convert(datetime, convert(char(4), year(getdate()))+'0101') as [start], 
    qtrsBack = 1
  union all
  select  
    dateadd(mm,-3,[start]), 
    qtrsBack+1
  from calendar
  where qtrsback < 12
)
select * from calendar

制造

start      qtrsBack
---------- -----------
2013-01-01 1
2012-10-01 2
2012-07-01 3
2012-04-01 4
2012-01-01 5
2011-10-01 6
2011-07-01 7
2011-04-01 8
2011-01-01 9
2010-10-01 10
2010-07-01 11
2010-04-01 12

从日期范围拉出季度

2 个答案: