mysql - 如何查询一张表中各个用户优先级最高的模板

Question

例如：表
user temp rank
u1 a 2
u1 b 0.5
u1 c 3
u2 aa 1.7
u2 cc 3
u3 dd 2
我希望拿到u1，b

     u2，aa

Answer 1

Suppose your table name is test:

select a.user, a.temp from test a left join test b on a.user = b.user and a.rank > b.rank where b.rank is NULL;

Answer 2

The one upstairs is the correct answer.