How to sort NULL values last using Eloquent in Laravel

Question

I\'ve got a many to many relationship between my employees and groups table. I\'ve created the pivot table, and all is working correctly with that. However, I\'ve got a sort

Answer 1

A workaround for PostgreSQL

For numeric types:

DB::table('t')
    ->select(['id', 'val'])
    ->orderBy(DB::raw("coalesce(val, 0)"), 'desc')

For text types:

orderBy(DB::raw("coalesce(val, '')"), 'desc')

The trick is to replace NULL values in the sorting column to zero (or empty string) so that it could be sorted as an ordinary integer (or text) value.