LeetCode（数据库）- 计算税后工资

题目链接：点击打开链接

题目大意：略。

解题思路：略。

AC 代码

WITH t AS(SELECt company_id, CASE 
WHEN MAX(salary) < 1000 THEN 0
WHEN MAX(salary) BETWEEN 1000 AND 10000 THEN 0.24
WHEN MAX(salary) > 10000 THEN 0.49
END tax_rate
FROM Salaries
GROUP BY company_id)

SELECt company_id, employee_id, employee_name, ROUND(salary * (1 - tax_rate), 0) salary
FROM Salaries JOIN t USING(company_id)