Question

我有一个带有日期字段的表，并转换为月和年（2个单独的列）。我无法排序

Month    Year
12        2011
11        2011
2         2012
1         2012

如果我写了查询。它给出了

  Month       Year
   1          2012
   2          2012
   11         2011
   12         2011

但是我需要如下

  Month          Year
   11         2011
   12         2011
    1         2012
    2         2012

这里按月分组，我不想显示日期字段

请帮忙

Answer 1

select datepart(month, DateCol) as [Month],
       datepart(year, DateCol) as [Year]
from YourTable
order by [Year], [Month]

SQL Fiddle

如果你想按月分组

select datepart(month, DateCol) as [Month],
       datepart(year, DateCol) as [Year]
from YourTable
group by datepart(month, DateCol),
         datepart(year, DateCol)
order by [Year], [Month]

SQL Fiddle

Answer 2

这是你可以做的：

;WITH CTE
AS
(
    SELECT *,
    ROW_NUMBER() OVER ( PARTITION BY YEAR ORDER BY MONTH) RN
FROM YourTable
)

SELECT * FROM CTE  
ORDER BY YEAR, RN

SQL FIDDLE DEMO

实际上还有一个明星前进的方式，

SELECT * FROM YourTable
ORDER BY YEAR, MONTH

如何分类月份和多年的SQL Server

2 个答案: