Vazifa #2
Har bir bo‘limda eng yuqori maosh oladigan TOP-3 xodimlarni ko‘rsatuvchi so‘rov yozing.
Bo‘lim nomi, xodim nomi va uning maoshini ko‘rsating.
employee jadvali:
| id | name | salary | dept_id |
|----|-------|--------|---------|
| 10 | John | 1000 | 2 |
| 20 | Tom | 5000 | 3 |
| 30 | Bill | 3000 | 2 |
department jadvali:
| id | name |
|----|-----------|
| 1 | Marketing |
| 2 | IT |
| 3 | Finance |
Natija: department_name, num, employee_name, salary
cte sifatida:
select d.name as department_name,
e.name as employee_name,
e.salary,
dense_rank
from employee e
join department d on e.id = d.id
