+-------------+---------+
| 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.
Selecting rows based on conditions
-- PostgreSQL
SELECT
product_id
FROM
Products
WHERE
low_fats = 'Y' AND recyclable = 'Y';The keyword SELECT is used to specify the columns that we want to retrieve from the table Products. In this scenario, we want to retrieve the product_id column.
The keyword WHERE is used to filter the rows in the table Products based on specific conditions, which the low_fats column has the value "Y" (indicating low-fat products) and the recyclable column has the value "Y" (indicating recyclable products). We use the logical operator AND to combine both conditions, ensuring that the final result includes only product IDs for products that are both low fat and recyclable.
Wrap up
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