How to Perform a Nested Subquery with WHERE IN in Laravel?

Performing a Nested Subquery in Laravel with WHERE IN

In Laravel, you can execute a nested subquery using the whereIn method. This technique is often employed to select records based on criteria derived from a subquery.

To perform the query provided in the question, you can utilize the following Laravel code:

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

In this code, the inner subquery selects the product_id values that meet the specified criteria and places them in a temporary table. The outer query then uses these values as part of its WHERE IN clause to retrieve the corresponding product records.

This approach is preferred over using a join due to performance considerations, as the temporary table generated by the subquery can be more efficiently used by the database engine.

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