使用以下代码,我得到最大值
select
max(e.maxNum)
from (select
companyno as cn,
count(employeeNo) as maxNum
from works
group by companyNo) e;
但我也需要像(companyno,e.maxNum)这样的“companyNo”
我试过了
select
e.cn,
max(e.maxNum)
from (select
companyno as cn,
count(employeeNo) as maxNum
from works
group by companyNo) e;
但我收到错误
如何解决这个问题?
表格格式
works(employeeNo, companyNo, salary)
company(companyNo, companyName, city)