有一个薪水表salaries简况如下: emp_no salary from_date to_date 10001 88958 2002-06-22 9999-01-01 10002 72527 2001-08-02 9999-01-01 10003 43311 2001-12-01 9999-01-01 10004 72527 2001-12-01 9999-01-01 对所有员工的薪水按照salary降序先进行1-N的排名，如果salary相同，再按照emp_no升序排列： emp_no salary t_rank 10001 88958 1 10002 72527 2 10004 72527 2 10003 43311 3
示例1
输入
drop table if exists `salaries` ;
CREATE TABLE `salaries` (
`emp_no` int(11) NOT NULL,
`salary` int(11) NOT NULL,
`from_date` date NOT NULL,
`to_date` date NOT NULL,
PRIMARY KEY (`emp_no`,`from_date`));
INSERT INTO salaries VALUES(10001,88958,'2002-06-22','9999-01-01');
INSERT INTO salaries VALUES(10002,72527,'2001-08-02','9999-01-01');
INSERT INTO salaries VALUES(10003,43311,'2001-12-01','9999-01-01');
INSERT INTO salaries VALUES(10004,72527,'2001-12-01','9999-01-01');
输出
10001|88958|1
10002|72527|2
10004|72527|2
10003|43311|3
加载中...