此查询的替代方法？

Question

比方说，我们有列“名称”一表名为Employee：

+---------+ 
| Name | 
+---------+ 
| Jack | 
+---------+ 
| Paul | 
+---------+ 
| Jack | 
+---------+ 

有了明显的名称，我们可以运行此查询：

Select DISTINCT Name 
from Employee 

是否有任何其他方式来获取不同值？

Answer 1

Select Name 
from Employee 
Group by Name 

这也给出相同的结果

Answer 2

我不知道为什么你不希望使用不同的，但你可以GROUP BY

Select Name 
from Employee 
group by Name; 

如果你只是想获得一些乐趣：

select top 1 with ties Name 
from Employee 
order by ROW_NUMBER() over(partition by Name order by Name) 

Answer 3

GROUP BY是愚蠢的，但UNION更糟糕：

select name from Employee 
union 
select name from Employee 

你也可以做INTERSECT ...

Answer 4

;with #temp(Select Name,row_number()over(partition by name order by name desc) as seq) 
Select Name from #temp where seq=1