文章目录
-
- 原题题目
- 代码实现(首刷自解)
原题题目
代码实现(首刷自解)
# Write your MySQL query statement below
select customer_id
from customers
where year = 2021 and revenue > 0
# Write your MySQL query statement below
select customer_id
from customers
where year = 2021 and revenue > 0