1、题目描述
Write an SQL query that reports all product names of the products in the Sales table along with their selling year and price.
For example:
Sales table:
| sale_id | product_id | year | quantity | price |
|---|---|---|---|---|
| 1 | 100 | 2008 | 10 | 5000 |
| 2 | 100 | 2009 | 12 | 5000 |
| 7 | 200 | 2011 | 15 | 9000 |
Product table:
| product_id | product_name |
|---|---|
| 100 | Nokia |
| 200 | Apple |
| 300 | Samsung |
Result table:
| product_name | year | price |
|---|---|---|
| Nokia | 2008 | 5000 |
| Nokia | 2009 | 5000 |
| Apple | 2011 | 9000 |
来源：力扣（LeetCode）
2、解题思路
就是外连接嘛。
3、提交记录
select product_name,`year`,price
from Sales s left join product p
on s.product_id=p.product_id
