如何获得员工的月薪和最高薪水

Question

两张桌子。一个包含员工ID，姓名，名称.. 第二个表包含id，month，salary。

我需要获得最高工资的输出，包括月份和名称，员工的指定。

Answer 1

考虑如下表格;

mysql> select * from T1;
+----+------+-------------+
| id | name | Designation |
+----+------+-------------+
|  1 | a    | man         |
|  2 | b    | assis       |
|  3 | c    | serv        |
+----+------+-------------+

和

mysql> select * from T2;
+----+-------+--------+
| id | month | salary |
+----+-------+--------+
|  1 | jan   |   3000 |
|  2 | jan   |   2000 |
|  3 | jan   |   1000 |
|  1 | Feb   |   4000 |
|  2 | Feb   |   3000 |
|  3 | Feb   |   2000 |
+----+-------+--------+

您的要求： 获得＆＃34;最高薪水与月份和名称，员工的指定＆＃34;

查询：

select name,Designation,max(salary) from T1 join T2 using (id)          
group by name;

结果：

+------+-------------+-------------+
| name | Designation | max(salary) |
+------+-------------+-------------+
| a    | man         |        4000 |
| b    | assis       |        3000 |
| c    | serv        |        2000 |
+------+-------------+-------------+

如果您想要每个月每位员工的最高薪水：

查询：

select name,Designation,month,max(salary) from T1 join T2 using (id)     
group by name,month;

结果：

+------+-------------+-------+-------------+
| name | Designation | month | max(salary) |
+------+-------------+-------+-------------+
| a    | man         | Feb   |        4000 |
| a    | man         | jan   |        3000 |
| b    | assis       | Feb   |        3000 |
| b    | assis       | jan   |        2000 |
| c    | serv        | Feb   |        2000 |
| c    | serv        | jan   |        1000 |
+------+-------------+-------+-------------+

希望这会有所帮助!!

Answer 2

试试这个： -

SELECT x1.month,e1.name,e1.designation,x1.salary FROM employee e1 JOIN (SELECT max(salary) 
as salary,month,name,employeeid FROM salary GROUP BY employeeid)x1 
ON x1.salary = e1.salary AND e1.id = x1.employeeid

Answer 3

go list -m all