List the Products Ordered in a Period

Author: Viniciuscoding

Leetcode_1327.sql

@@ -0,0 +1,86 @@
+/*
+List the Products Ordered in a Period
+
+Table: Products
++------------------+---------+
+| Column Name      | Type    |
++------------------+---------+
+| product_id       | int     |
+| product_name     | varchar |
+| product_category | varchar |
++------------------+---------+
+product_id is the primary key for this table.
+This table contains data about the company's products.
+
+Table: Orders
++---------------+---------+
+| Column Name   | Type    |
++---------------+---------+
+| product_id    | int     |
+| order_date    | date    |
+| unit          | int     |
++---------------+---------+
+There is no primary key for this table. It may have duplicate rows.
+product_id is a foreign key to Products table.
+unit is the number of products ordered in order_date.
+ 
+Write an SQL query to get the names of products with greater than or equal to 100 units ordered in February 2020 
+and their amount.
+
+Return result table in any order.
+
+The query result format is in the following example:
+
+
+Products table:
++-------------+-----------------------+------------------+
+| product_id  | product_name          | product_category |
++-------------+-----------------------+------------------+
+| 1           | Leetcode Solutions    | Book             |
+| 2           | Jewels of Stringology | Book             |
+| 3           | HP                    | Laptop           |
+| 4           | Lenovo                | Laptop           |
+| 5           | Leetcode Kit          | T-shirt          |
++-------------+-----------------------+------------------+
+
+Orders table:
++--------------+--------------+----------+
+| product_id   | order_date   | unit     |
++--------------+--------------+----------+
+| 1            | 2020-02-05   | 60       |
+| 1            | 2020-02-10   | 70       |
+| 2            | 2020-01-18   | 30       |
+| 2            | 2020-02-11   | 80       |
+| 3            | 2020-02-17   | 2        |
+| 3            | 2020-02-24   | 3        |
+| 4            | 2020-03-01   | 20       |
+| 4            | 2020-03-04   | 30       |
+| 4            | 2020-03-04   | 60       |
+| 5            | 2020-02-25   | 50       |
+| 5            | 2020-02-27   | 50       |
+| 5            | 2020-03-01   | 50       |
++--------------+--------------+----------+
+
+Result table:
++--------------------+---------+
+| product_name       | unit    |
++--------------------+---------+
+| Leetcode Solutions | 130     |
+| Leetcode Kit       | 100     |
++--------------------+---------+
+
+Products with product_id = 1 is ordered in February a total of (60 + 70) = 130.
+Products with product_id = 2 is ordered in February a total of 80.
+Products with product_id = 3 is ordered in February a total of (2 + 3) = 5.
+Products with product_id = 4 was not ordered in February 2020.
+Products with product_id = 5 is ordered in February a total of (50 + 50) = 100.
+*/
+
+# MY SOLUTION
+SELECT p.product_name, SUM(o.unit) AS unit
+FROM Products p
+LEFT JOIN Orders o
+ON p.product_id = o.product_id
+WHERE o.order_date BETWEEN '2020-02-01' AND '2020-02-29' 
+GROUP BY p.product_id
+HAVING unit >= 100