I tried Model:
where('sent_at', 'IS NOT', DB::raw('null'))
but it gives IS NOT as a binding instead of a comparison.
This is what DB::getQueryLog() says about it:
'query' => string 'select * from my_table where sent_at = ? and profile_id in (?, ?) order by created_at desc' (length=101)
0 => string 'IS NOT' (length=6)
1 => int 1
2 => int 4
So any help regarding how to check if a field is not null with Eloquent?