How to get all records from department wise having max salary?

Question

i have a Employee table which consist
id | name | dept_id | Salary
1 A 1 20
2 B 1 25
3 C 2 30
4 D 2 25
Search max salary department wise with all details like below result.
id | name | dept_id | Salary
2 B 1 25
3 C 2 30

Answer 1

Could you try this?
create table employee (id int, name varchar(10), dept_id int, salary int)
insert into employee values (1,'A',1,20)
insert into employee values (2,'B',1,25)
insert into employee values (3,'C',2,30)
insert into employee values (4,'D',2,25)
select e.* from employee e inner join
(select a.dept_id , max (a.salary) as 'max_salary' from employee a
group by a.dept_id ) b
on e.dept_id = b.dept_id
and e.salary = b.max_salary
order by e.dept_id
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