task: #1068

README.md

@@ -46,6 +46,7 @@ Have a good contributing!
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     - [620. Not Boring Movies](./leetcode/easy/620.%20Not%20Boring%20Movies.sql)
+    - [1068. Product Sales Analysis I](./leetcode/easy/1068.%20Product%20Sales%20Analysis%20I.sql)
 2. [Medium](./leetcode/medium/)
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leetcode/easy/1068. Product Sales Analysis I.sql

@@ -0,0 +1,46 @@
+/*
+Question 1068. Product Sales Analysis I
+Link: https://leetcode.com/problems/product-sales-analysis-i/description/
+
+Table: Sales
+
++-------------+-------+
+| Column Name | Type  |
++-------------+-------+
+| sale_id     | int   |
+| product_id  | int   |
+| year        | int   |
+| quantity    | int   |
+| price       | int   |
++-------------+-------+
+(sale_id, year) is the primary key (combination of columns with unique values) of this table.
+product_id is a foreign key (reference column) to Product table.
+Each row of this table shows a sale on the product product_id in a certain year.
+Note that the price is per unit.
+
+
+Table: Product
+
++--------------+---------+
+| Column Name  | Type    |
++--------------+---------+
+| product_id   | int     |
+| product_name | varchar |
++--------------+---------+
+product_id is the primary key (column with unique values) of this table.
+Each row of this table indicates the product name of each product.
+
+
+Write a solution to report the product_name, year, and price for each sale_id in the Sales table.
+
+Return the resulting table in any order.
+*/
+
+SELECT 
+    p.product_name,
+    s.year,
+    s.price
+FROM Sales AS s
+LEFT JOIN
+    Product AS p
+    ON s.product_id = p.product_id