从不同的行值SQL Server获取max（）值

Question

I need to select max value for different rows by same column:

Here's my table

id          | visited_count
------------+--------------
01071400005 | 1
01071400005 | 5
01071400006 | 1
01071400006 | 3

I need to show 01071400005 and 01071400006, so I tried below code but it only selects 01071400005.

SELECT  MAX(visited_count) - 1 
from   tbl_all_purple_flag_level where id in 
(select distinct(id) from tbl_all_purple_flag_level ) 

How can I select both of them?

Answer 1

如果我正确理解，那么您只想按id对表进行分组 ：

SELECT id, MAX(visited_count) FROM tbl_all_purple_flag_level GROUP BY id