Question

I have a Product class that when instantiated, fetch data from “product” table, it also creates a “Category” object inside it (product->category) that fetch data from the category table. My problem is, what happens when multiple products from the same category are listed, multiple equal queries are made in order to create the category object, since they’re from the same category. How to solve this?

Answer 1

Use a JOIN in your SQL:

SELECT *
FROM product
LEFT JOIN category ON product.category_id = category.id;