Sales Sheet Sales:
+ ------- + ------------- +
| Column the Name | Type |
+ ------------- + ------ - +
| sale_id | int |
| product_id | int |
| year | int |
| the Quantity | int |
|. price | int |
+ ------------- + ------- +
(sale_id, year) sales sales table primary key.
product_id is a foreign key table product of the product.
Note: price represents a price per unit of
product list product:
+ --------- + -------------- +
| Column the Name | Type |
+ -------------- + - + -------
| product_id | int |
| PRODUCT_NAME | VARCHAR |
+ -------------- + --------- +
product_id is a primary key.
write a SQL query statement to get all the products table product name product name and product in the Sales table corresponding to the year and the market year price price.
Example:
Sales 表：
+---------+------------+------+----------+-------+
| sale_id | product_id | year | quantity | price |
+---------+------------+------+----------+-------+
| 1 | 100 | 2008 | 10 | 5000 |
| 2 | 100 | 2009 | 12 | 5000 |
| 7 | 200 | 2011 | 15 | 9000 |
+---------+------------+------+----------+-------+
Product 表：
+------------+--------------+
| product_id | product_name |
+------------+--------------+
| 100 | Nokia |
| 200 | Apple |
| 300 | Samsung |
+------------+--------------+
Result 表：
+--------------+-------+-------+
| product_name | year | price |
+--------------+-------+-------+
| Nokia | 2008 | 5000 |
| Nokia | 2009 | 5000 |
| Apple | 2011 | 9000 |
+--------------+-------+-------+
Ideas: joining two tables query.
select product_name, year, price
from Sales,Product
where Sales.product_id=Product.product_id;
