mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-09-04 23:11:41 +08:00
86 lines
3.0 KiB
HTML
86 lines
3.0 KiB
HTML
<p>Table: <code>Products</code></p>
|
|
|
|
<pre>
|
|
+------------------+---------+
|
|
| Column Name | Type |
|
|
+------------------+---------+
|
|
| product_id | int |
|
|
| product_name | varchar |
|
|
| product_category | varchar |
|
|
+------------------+---------+
|
|
product_id is the primary key (column with unique values) for this table.
|
|
This table contains data about the company's products.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
|
|
<p>Table: <code>Orders</code></p>
|
|
|
|
<pre>
|
|
+---------------+---------+
|
|
| Column Name | Type |
|
|
+---------------+---------+
|
|
| product_id | int |
|
|
| order_date | date |
|
|
| unit | int |
|
|
+---------------+---------+
|
|
This table may have duplicate rows.
|
|
product_id is a foreign key (reference column) to the Products table.
|
|
unit is the number of products ordered in order_date.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
|
|
<p>Write a solution to get the names of products that have at least <code>100</code> units ordered in <strong>February 2020</strong> and their amount.</p>
|
|
|
|
<p>Return the result table in <strong>any order</strong>.</p>
|
|
|
|
<p>The result format is in the following example.</p>
|
|
|
|
<p> </p>
|
|
<p><strong class="example">Example 1:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong>
|
|
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 |
|
|
+--------------+--------------+----------+
|
|
<strong>Output:</strong>
|
|
+--------------------+---------+
|
|
| product_name | unit |
|
|
+--------------------+---------+
|
|
| Leetcode Solutions | 130 |
|
|
| Leetcode Kit | 100 |
|
|
+--------------------+---------+
|
|
<strong>Explanation:</strong>
|
|
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.
|
|
</pre>
|