LeetCode-1757. Recyclable and low-fat products_ SQL

• SQL framework

surface ：Products
±------------±--------+
| Column Name | Type |
±------------±--------+
| product_id | int |
| low_fats | enum |
| recyclable | enum |
±------------±--------+
product_id It's the primary key of this table .
low_fats Is enumeration type , The values are the following two (‘Y’, ‘N’), among ‘Y’ Indicates that the product is a low-fat product ,‘N’ It means it's not a low-fat product .
recyclable Is enumeration type , The values are the following two (‘Y’, ‘N’), among ‘Y’ Indicates that the product is recyclable , and ‘N’ Indicates non recyclable .

• Write SQL sentence , Find product numbers that are both low-fat and recyclable .

• Return results No sequence requirements .

The query result format is shown in the following example ：

Products surface ：
±------------±---------±-----------+
| product_id | low_fats | recyclable |
±------------±---------±-----------+
| 0 | Y | N |
| 1 | Y | Y |
| 2 | N | Y |
| 3 | Y | Y |
| 4 | N | N |
±------------±---------±-----------+
Result surface ：
±------------+
| product_id |
±------------+
| 1 |
| 3 |
±------------+
Only products id by 1 and 3 Products , Both low-fat and recyclable products .

Program code

# Write your MySQL query statement below
select product_id
from Products
where low_fats = 'Y' and recyclable = 'Y'