refactor 1068

Author: fishercoder1534

database/_1068.sql

@@ -1,61 +1,3 @@
---1068. Product Sales Analysis I
---
---Table: Sales
---
---+-------------+-------+
---| Column Name | Type  |
---+-------------+-------+
---| sale_id     | int   |
---| product_id  | int   |
---| year        | int   |
---| quantity    | int   |
---| price       | int   |
---+-------------+-------+
---(sale_id, year) is the primary key of this table.
---product_id is a foreign key to Product table.
---Note that the price is per unit.
---Table: Product
---
---+--------------+---------+
---| Column Name  | Type    |
---+--------------+---------+
---| product_id   | int     |
---| product_name | varchar |
---+--------------+---------+
---product_id is the primary key of this table.
---
---
---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  |
---+--------------+-------+-------+
-
 select p.product_name, s.year, s.price
 from Product p
 join Sales s