Question

我有一个包含大量日期时间条目的表。我想选择按降序日期顺序排序的不同MONTH YEAR字符串列表。例如，我想看看

October 2012
September 2012
June 2012
July 2011

查询需要是不同的，因为每个月/每天都有多个条目。

这就是我所拥有的

SELECT  DISTINCT YEAR(DateRequested), datename(MONTH,[DateRequested])
FROM    [dbo].[MyDateData]
ORDER BY YEAR(DateRequested), MONTH([DateRequested])

但是我收到了这个错误：

ORDER BY items must appear in the select list if SELECT DISTINCT is specified.

感觉就像我差不多但却无法正确理解这种语法。我正在使用SQL Server 2012 - 谢谢

Answer 1

尝试;

SELECT monthYear FROM (
SELECT DISTINCT DATENAME(month,dateCol) + ' ' + 
                CONVERT(VARCHAR, DATEPART(year,dateCol)) monthYear, 
                CONVERT(varchar(6),dateCol, 112) orderCol
FROM yourTable ) A
ORDER BY CONVERT(INT,orderCol) desc

Answer 2

您只需要确保ORDER BY行中的所有内容都在SELECT中。

Answer 3

请改为尝试：

;WITH CTE
AS
(
  SELECT  DISTINCT 
     YEAR(DateRequested) "Year",
     DATENAME(MONTH,[DateRequested]) "Month"
  FROM YourDateTable
) 
SELECT * 
FROM CTE 
ORDER BY "Year", "Month"

在SQL中选择不同格式的日期

3 个答案:

SQL Fiddle Demo