How to Efficiently Retrieve Product Data in Laravel Using a Subquery in `WHERE IN`?

Laravel Subquery WHERE IN:

You're seeking a performant way to retrieve product data from the products table in Laravel, utilizing a subquery to specify the product_id values to include. While a join alternative exists, you prefer a subquery-based approach for optimization purposes.

Solution:

Below is the code that addresses your requirement, leveraging subqueries within the whereIn clause:

Products::whereIn('id', function($query){
    $query->select('paper_type_id')
        ->from(with(new ProductCategory)->getTable())
        ->whereIn('category_id', ['223', '15'])
        ->where('active', 1);
})
->get();

Explanation:

• The query starts with a Products model base, which represents the target table from which we want to retrieve data.
• The whereIn clause is employed, specifying the id column of the
  products table as the column to evaluate.
• A nested closure is utilized to define the subquery. Within this closure, we select the paper_type_id from a temporary table created using with(new ProductCategory)->getTable().
• The subquery then applies the necessary filters, including whereIn('category_id', ['223', '15']) to restrict the results to specific categories and where('active', 1) to include only active products.
• Finally, the entire query is executed using get(), retrieving the desired product data efficiently.

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