In Laravel we can setup relationships like so:
class User { public function items() { return $this->belongsToMany(\'Item\'); } }
Maybe you can use:
DB::table('users') ->whereExists(function($query) { $query->select(DB::raw(1)) ->from('orders') ->whereRaw('orders.user_id = users.id'); }) ->get();
Source: http://laravel.com/docs/4.2/queries#advanced-wheres