一個簡單的SQL語句問題,請大家幫忙...在線等啊

Question

select distinct type from usertree

Answer 1

select distinct type   from usertree

Answer 2

不错
使用distinct语句来消除重复内容

Answer 3

select distinct type from usertree

Answer 4

抢分罗！楼主多看帮助！select distinct type from usertree

Answer 5

给你变个样：
select select type  from usertree group by type

Answer 6

select type  from usertree group by type

Answer 7

用 distinct 是个办法！！

Answer 8

大家觉得用group by如何？
有什么区别？
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