RT
有办法吗。
select *
from salary s join employees e on s.employeeid = e.employeeid
order by income asc 结果中会重复出现一列。
有什么办法消除重复的列吗。
有办法吗。
select *
from salary s join employees e on s.employeeid = e.employeeid
order by income asc 结果中会重复出现一列。
有什么办法消除重复的列吗。
你不用*,直接查询列名就行了
from salary s join employees e on s.employeeid = e.employeeid
order by income asc