Laravel model query with sum and grouping - laravel

Question

I have a table like this:
|item_name |uom |qty |order_number
|bike |pc |1 |101
|ball |pc |2 |102
|bike |pc |5 |103
|car |pc |3 |106
|bike |pc |4 |108
|ball |pc |1 |109
|bike |pc |6 |115
|car |pc |1 |111
And I want to see in a view this data:
bike - 16 pcs overall:
101 - 1
103 - 5
108 - 4
115 - 6
ball - 3 pcs overall:
102 - 2
109 - 1
etc...
I tried wuth this query, but I think it is not correct, because it gives me only name and sum of qty:
$saps = Item::where('year', 2019)->groupBy('item_name')->selectRaw('item_name, sum(qty) as sum')->get('item_name','sum');

Answer 1

Item::where('year', 2019)
->select('name','order_number',\DB::raw("SUM(qty) as qty"))
->groupBy('name')
->havingRaw('COUNT(*) > 1')
->get();
Try this query.
Outupt

Answer 2

Try this query.
$saps = Item::where('year', 2019)->selectRaw('order_number, qty')
->groupBy('item_name')
->get();
Or
$saps = Item::where('year', 2019)->selectRaw('order_number, qty,item_name')
->get();
$saps_new = $saps->groupBy('item_name')->map(function ($row) {
return $row->sum('qty');
});

Answer 3

You can get the initial groups with this:
$saps = Item::where('year', 2019)->selectRaw("SUM(qty) as total, item_name, id")
->groupBy('item_name')
->get();
You can then lazy or eager load the listing for each item.
If you go with lazy loading you can map on results and then lazy load the listing based on each item
$saps->map(function($item){
$items = Item::where('year', 2019)->where('item_name', $item->item_name)
->get();
}
or eager load like this:
Item::where('year', 2019)->whereIn('item_name', $saps)
->get();