Laravel allows developers to declare unsigned columns in different ways. As it's required to handle the relationship between tables by just associating models with each other.
There will be a situation where you’ve to continue using your old or legacy database which might differ with Laravel’s way of naming column names in tables.
Laravel provides few default timestamps fields such as created_at, updated_at and deleted_at.
Laravel provide a helper Arr::query() to build query string from an array, an alternative to core php http_build_query() method.
Tested with Laravel versions 5.8, 6 and 7.
Kindly check for your version on official helpers page.