一条sql语句,求高手
表数据:
  id   email       number
   1   aa@qq.com    00001
   2   bb@qq.com    00001
   3   cc@qq.com    00002
   4   dd@qq.com    00002
需要的结果是:
  id   email       number
   1   aa@qq.com    00001
   3   cc@qq.com    00002
sql语句怎么写?
------解决方案--------------------
SQL code
select * from tb t
where not exists(select 1 from tb where number=t.number and id<t.id)