[LeetCode][MySQL] 1757. Recyclable and Low Fat Products

Easy 🔗1757. Recyclable and Low Fat Products

📝문제 요약

Table: Products

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| product_id  | int     |
| low_fats    | enum    |
| recyclable  | enum    |
+-------------+---------+
product_id is the primary key (column with unique values) for this table.
low_fats is an ENUM (category) of type ('Y', 'N') where 'Y' means this product is low fat and 'N' means it is not.
recyclable is an ENUM (category) of types ('Y', 'N') where 'Y' means this product is recyclable and 'N' means it is not.

Write a solution to find the ids of products that are both low fat and recyclable.

Return the result table in any order.

The 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.

✏️문제 풀이

• SELECT
  • 제품의 id : product_id
• FROM Products
• WHERE
  • 저지방 low_fats LIKE 'Y'
  • 재활용 가능 low_fats LIKE 'Y'
  • 두 조건 모두 충족해야 하므로 AND 사용

💯제출 코드

SELECT product_id
FROM Products
WHERE low_fats LIKE 'Y' AND recyclable LIKE 'Y'