以下日期排序查询有什么问题

Question

我正在使用以下查询对输出进行排序。它在某些情况下有效，但并非全部。给出的输出图片。任何建议为什么？请任何替代。

Select 
    'playing' As activity,
    max(ad.xDate) As xDate,
    Isnull(sum(t.TimePerDay), 0) As TimePerDay 
From    
    AllDates As ad With (Nolock) 
Left Join 
    @test As t On ad.xDate = t.date
Group By
    datepart(wk, ad.xDate)
Order By
    YEAR(datepart(wk, ad.xDate)) DESC, MONTH(datepart(wk, ad.xDate)) DESC, DAY(datepart(wk, ad.xDate))

Answer 1

为什么要在获取年月之前提取周？

我想你想要：

ORDER BY MIN(ad.xDate) DESC

这将按每行的任意日期排序。