的SQL Server 2012组通过

Question

我想从这个查询从标签表获得前10个值的结果，其中最 发布的文章

select distinct top 10 Name as 'Tag Name' 
from Articles join Tags on Articles.TagID=Tags.ID 
group by Tags.Name 
order by count(Articles.TagID) 

，但它给了以下错误

Msg 145, Level 15, State 1, Line 1 
ORDER BY items must appear in the select list if SELECT DISTINCT is specified. 

Answer 1

你如果按该列分组，则不需要distinct。

select top 10 
     Name as 'Tag Name' 
from Articles 
join Tags on Articles.TagID = Tags.ID 
group by Tags.Name 
order by count(Articles.TagID) desc