Answer to SQL Leetcode question 1757

Answer to SQL Leetcode question 1757 

1757. Recyclable and Low Fat Products

SQL Schema

Table: Products

+-------------+---------+
| 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 ('Y', 'N') where 'Y' means this product is low fat and 'N' means it is not.
recyclable is an ENUM of types ('Y', 'N') where 'Y' means this product is recyclable and 'N' means it is not.

 

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

Return the result table in any order.

The query result format is in the following example.

 

Example 1:

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

Solution :

# Write your MySQL query statement below

SELECT product_id

FROM Products

WHERE low_fats = 'Y'

and recyclable = 'Y'