This code uses the “whereNotNull” method on the “Product” model to query the database for all products that have a non-null value for the “description” column. This would be useful, for example, if you wanted to retrieve all products that have a description and then display them to the user.
The “whereNotNull” method is just one of many methods that are available on the “Eloquent” class in Laravel. This class provides a convenient way to query the database and perform CRUD operations on database records.
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