SQL中的替換和分組依據

Question

您好我希望通過替換字符的字段對結果進行分組，但也保留原始值。

這是我有，但我需要返回原始的URL值，而不會改變結果。

select Count(ID) as TotalClicks, Replace(URL, '/', '') as DistinctURL 
    from email_click_throughs 
where emailid = @ID 
group by Replace(URL, '/', '') 
order by TotalClicks desc 

Answer 1

這會給你你所描述的，但它是在分組「替換（URL ......」多餘的，所以我可能會誤解：

select Count(ID) as TotalClicks, URL as DistinctURL 
from email_click_throughs 
where emailid = @ID 
group by Replace(URL, '/', ''), URL 
order by TotalClicks desc 

如果你只是想獲得回一個網址，即使兩者進行去除後「/」相當於，你可以不喜歡

select Count(ID) as TotalClicks, Max(URL) as DistinctURL 
from email_click_throughs 
where emailid = @ID group by Replace(URL, '/', '') 
order by TotalClicks desc 

但在這你「匹配」的是越來越下降了，你沒有太多的控制權。