WITH RankedSalaries AS (
SELECT
d.department_name AS DEPARTMENT,
e.emp_no AS EMP_NO,
e.first_name AS FIRST_NAME,
e.last_name AS LAST_NAME,
e.salary AS SALARY,
DENSE_RANK() OVER (PARTITION BY d.department_name ORDER BY e.salary DESC) AS salary_rank
FROM
your_employees_table e -- ΠΠ°ΠΌΠ΅Π½ΠΈΡΠ΅ Π½Π° ΠΈΠΌΡ Π²Π°ΡΠ΅ΠΉ ΡΠ°Π±Π»ΠΈΡΡ ΡΠΎΡΡΡΠ΄Π½ΠΈΠΊΠΎΠ²
JOIN
your_departments_table d ON e.department_id = d.department_id -- ΠΠ°ΠΌΠ΅Π½ΠΈΡΠ΅ Π½Π° ΠΈΠΌΡ Π²Π°ΡΠ΅ΠΉ ΡΠ°Π±Π»ΠΈΡΡ ΠΏΠΎΠ΄ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΠΉ
)
SELECT
DEPARTMENT,
EMP_NO,
FIRST_NAME,
LAST_NAME,
SALARY
FROM
RankedSalaries
WHERE
salary_rank = 1
ORDER BY
SALARY DESC;
;
SELECT 'Last_query_cost' AS "Variable_name", 0 AS "Value" FROM RDB$DATABASE;