SQLize | PHPize | SQLtest

-- 1 вариант select DEPARTMENT_ID, max(case when rnk = 1 then LAST_NAME else null end) as highest_paid, max(case when rnk = 2 then LAST_NAME else null end) as second_paid, max(case when rnk = 3 then LAST_NAME else null end) as third_highest from ( select DEPARTMENT_ID, LAST_NAME, dense_rank() over (partition by DEPARTMENT_ID order by salary desc) rnk from employees order by DEPARTMENT_ID )t where rnk <= 3 group by DEPARTMENT_ID order by DEPARTMENT_ID; -- 2 вариант select DEPARTMENT_ID, listagg(case when rnk = 1 then LAST_NAME else null end, ', ') within group (order by LAST_NAME) as highest_paid, listagg(case when rnk = 2 then LAST_NAME else null end, ', ') within group (order by LAST_NAME) as second_paid, listagg(case when rnk = 3 then LAST_NAME else null end, ', ') within group (order by LAST_NAME) as third_highest from ( select DEPARTMENT_ID, LAST_NAME, dense_rank() over (partition by DEPARTMENT_ID order by salary desc) rnk from employees order by DEPARTMENT_ID )t where rnk <= 3 group by DEPARTMENT_ID order by DEPARTMENT_ID