本文介绍了SQL Server:比较同一张表中人的工资,并显示两个名字,有差异的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!
问题描述
我有下表:
对于演示者
并希望获得如下输出:
示例
我尝试进行内部联接,但觉得有点困惑,因为我对 SQL 还很陌生
I tried doing an inner join, but think got a bit confused as I'm still rather new with SQL
我必须显示同一个表中的 2 个名字,但不确定在哪里放置工资比较,
I got to display 2 names from the same table, but unsure where to place the comparison of the salary,
这是我尝试过的代码:
select
t1.PNRFNAME, t2.PNRFNAME, t1.SALARY_YEARLY
from
PRESENTERS t1
inner join
PRESENTERS t2 on t1.PRESENTER_ID = t2.PRESENTER_ID
order by
t1.SALARY_YEARLY DESC
推荐答案
只需添加一个名为 Salary_Diff 的列:
Just add a column called Salary_Diff:
select t1.PNRFNAME,t2.PNRFNAME, t1.SALARY_YEARLY,
t1.SALARY_YEARLY - t2.SALARY_YEARLY AS Salary_Diff
from PRESENTERS t1
cross join PRESENTERS t2
where t1.presenterid <> t2.presenterid
ORDER BY t1.SALARY_YEARLY DESC
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