关于 leetcode mysql 问题：部门工资前三高的所有员工

题目：部门工资前三高的所有员工

我的 sql 如下

select  t.Name as Department, Employee.Name as Employee, Employee.Salary from Employee , 
(

	SELECT *, IFNULL((

	SELECT DISTINCT(salary) from Employee, (select @i :=0, @pre := -1) t 
	where Employee.DepartmentId = Department.id 
	HAVING ( @i := @i + (@pre != (@pre := salary))) = 3 
	ORDER BY salary desc

	), 0) as salary from Department
	
) as t

where t.id = Employee.DepartmentId and Employee.Salary >= t.Salary
order by t.id asc, Employee.Salary desc;

本地 sql 执行结果 ok，leetcode 执行代码也 ok，提交审核就挂了！不知道问题在哪儿！