How to use concat and group by in laravel?

@arnoldo.moen 

In Laravel, you can use the concat and groupBy methods on a database query builder to concatenate strings and group the results by a specified column.

Here is an example of how you can use concat and groupBy in a Laravel query:

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$users = DB::table('users')
            ->select('id', DB::raw("concat(first_name, ' ', last_name) as full_name"))
            ->groupBy('id')
            ->get();

In this example, we are selecting the id column from the users table and concatenating the first_name and last_name columns into a new column called full_name. We are then grouping the results by the id column.

You can further customize the query by adding additional conditions, ordering the results, or selecting different columns.