牛客SQL23--对所有员工的薪水按照salary降序进行1-N的排名

MYSQL:

SELECT  s.emp_no,Y.salary,Y.t_rank
FROM
(SELECT X.salary,CAST((@number := @number+1) AS SIGNED) AS t_rank
FROM
(SELECT DISTINCT salary
FROM salaries
ORDER BY salary DESC) X
JOIN (SELECT @number:=0) AS it) Y
JOIN salaries s
ON Y.salary=s.salary
ORDER BY Y.salary DESC,s.emp_no ASC;