表: Employees
+-------------+---------+ | 列名 | 类型 | +-------------+---------+ | employee_id | int | | name | varchar | | salary | int | +-------------+---------+ employee_id 是这个表的主键。 此表的每一行给出了雇员id ,名字和薪水。
写出一个SQL 查询语句,计算每个雇员的奖金。如果一个雇员的id是奇数并且他的名字不是以'M'开头,那么他的奖金是他工资的100%,否则奖金为0。
Return the result table ordered by employee_id
.
返回的结果集请按照employee_id
排序。
查询结果格式如下面的例子所示。
示例 1:
输入: Employees 表: +-------------+---------+--------+ | employee_id | name | salary | +-------------+---------+--------+ | 2 | Meir | 3000 | | 3 | Michael | 3800 | | 7 | Addilyn | 7400 | | 8 | Juan | 6100 | | 9 | Kannon | 7700 | +-------------+---------+--------+ 输出: +-------------+-------+ | employee_id | bonus | +-------------+-------+ | 2 | 0 | | 3 | 0 | | 7 | 7400 | | 8 | 0 | | 9 | 7700 | +-------------+-------+ 解释: 因为雇员id是偶数,所以雇员id 是2和8的两个雇员得到的奖金是0。 雇员id为3的因为他的名字以'M'开头,所以,奖金是0。 其他的雇员得到了百分之百的奖金。
SELECT
employee_id,
CASE
WHEN employee_id % 2 = 0
OR LEFT(name, 1) = 'M' THEN 0
ELSE salary
END AS bonus
FROM
employees;
MySQL
SELECT
employee_id,
IF(
employee_id % 2 = 0
OR LEFT(name, 1) = 'M',
0,
salary
) AS bonus
FROM
employees;
# Write your MySQL query statement below
SELECT
employee_id,
CASE
WHEN (employee_id % 2 = 1 AND NAME NOT LIKE "M%") THEN salary
ELSE 0
END AS bonus
FROM Employees
ORDER BY employee_id;