列出全名，工資，並添加從新工資中扣除舊工資的欄。標籤列增加？

Question

列出全名，工資並添加從新工資中減去舊工資的欄。標籤列增加？

Answer 1

你應該知道選擇...從

select fullname, salary, salary - old_salary as increase 
from my_table 

Answer 2

的語法大致如下。您必須將列標題替換爲姓名，工資，新薪水和舊薪水。然後把你的餐桌名稱代替「你的餐桌」。

SELECT Name, Salary, SUM(New_Salary - Old_Salary) AS Increase 
FROM Your_Table 

Answer 3

select name,salary (newsalary-oldsalary) AS 'increase' from 'tablename';