$users = DB::table('users')
->where('name', 'like', 'T%')
->get();
Code::where('to_be_used_by_user_id', '<>' , 2)->get()
Code::whereNotIn('to_be_used_by_user_id', [2])->get()
Code::where('to_be_used_by_user_id', 'NOT IN', 2)->get()