laravel eloquent query group by last id

Question

Hi I\'m trying to get the last register in DB for each equipment

I got like

id   | id_equip
-----+----------
   1 |    3
   2 |    3
   3 |    3
            


        

Answer 1

I'm not sure if there's an easier way and this is kind of convoluted because of the join, but it should give the result you want:

DB::table('equip as e')
    ->select('e.*')
    ->join(DB::raw("(SELECT id_equip, MAX(id) id FROM equip GROUP BY id_equip) as _e"), function ($join) {
        $join->on('e.id', '=', '_e.id')->on('e.id_equip', '=', '_e.id_equip');
    })
    ->orderBy('id', 'asc')
    ->get();