leetcode-problemset/leetcode-cn/problem (English)/可回收且低脂的产品(English) [recyclable-and-low-fat-products].html

<p>Table: <code>Products</code></p>

<pre>
+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| product_id  | int     |
| low_fats    | enum    |
| recyclable  | enum    |
+-------------+---------+
product_id is the primary key for this table.
low_fats is an ENUM of type (&#39;Y&#39;, &#39;N&#39;) where &#39;Y&#39; means this product is low fat and &#39;N&#39; means it is not.
recyclable is an ENUM of types (&#39;Y&#39;, &#39;N&#39;) where &#39;Y&#39; means this product is recyclable and &#39;N&#39; means it is not.</pre>

<p>&nbsp;</p>

<p>Write an SQL query to find the ids of products that are both low fat and recyclable.</p>

<p>Return the result table in <strong>any order</strong>.</p>

<p>The query result format is in the following example.</p>

<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>

<pre>
<strong>Input:</strong> 
Products table:
+-------------+----------+------------+
| product_id  | low_fats | recyclable |
+-------------+----------+------------+
| 0           | Y        | N          |
| 1           | Y        | Y          |
| 2           | N        | Y          |
| 3           | Y        | Y          |
| 4           | N        | N          |
+-------------+----------+------------+
<strong>Output:</strong> 
+-------------+
| product_id  |
+-------------+
| 1           |
| 3           |
+-------------+
<strong>Explanation:</strong> Only products 1 and 3 are both low fat and recyclable.
</pre>