Laravel use MAX on join statement - laravel

Question

I'm trying to find how can i use MAX on laravel QueryBuilder or Eloquent join statement, for example:
$userShoppings = \DB::table('shoppings')
->join('products', 'shoppings.product_id', '=', 'products.id')
->select('shoppings.*', 'products.name','products.amount','max(shoppings.ordering_count)')
->where('shoppings.user_ordering_ip', request()->ip())
->get();
in this code i want to get max ordering_count from shoppings table on select method, but i get this error:
Column not found: 1054 Unknown column 'max(shoppings.ordering_count)' in 'field list'
could any body help me to solve this problem?
UPDATE for paste wrong result
Collection {#449 ▼
#items: array:3 [▼
0 => {#446 ▼
+"id": 11
+"product_id": 25
+"user_ordering_ip": "127.0.0.1"
+"ordering_count": 3
+"created_at": "2017-12-25 09:41:01"
+"updated_at": "2017-12-25 09:41:01"
+"amount": "128,440"
+"max(shoppings.ordering_count)": 3
}
1 => {#445 ▼
+"id": 10
+"product_id": 26
+"user_ordering_ip": "127.0.0.1"
+"ordering_count": 1
+"created_at": "2017-12-25 09:32:13"
+"updated_at": "2017-12-25 09:32:13"
+"amount": "137,614"
+"max(shoppings.ordering_count)": 1
}
2 => {#452 ▼
+"id": 9
+"product_id": 49
+"user_ordering_ip": "127.0.0.1"
+"ordering_count": 2
+"created_at": "2017-12-24 17:59:29"
+"updated_at": "2017-12-24 18:35:25"
+"amount": "110,092"
+"max(shoppings.ordering_count)": 2
}
]
}

Answer 1

You could use DB::raw(). So:
$userShoppings = \DB::table('shoppings')
->join('products', 'shoppings.product_id', '=', 'products.id')
->select('shoppings.*', 'products.name','products.amount', DB::raw('max(shoppings.ordering_count)'))
->where('shoppings.user_ordering_ip', request()->ip())
// note: you'll need to also group by all the columns
// you're select in `shoppings.*`
->groupBy('products.name', 'products.amount', 'shoppings.id')
->get();
https://laravel.com/docs/5.5/queries#raw-expressions
For the groupBy() issue you're experiencing, it's possible that you have strict mode enabled for MySQL. You can disable it entirely in your database.php file by setting strict => false under your MySQL connection. However, this will disable all strict checks
If you want to simply disable ONLY_FULL_GROUP_BY, you can add a modes key to your mysql connection in database.php as follows:
modes' => [
'STRICT_TRANS_TABLES',
'NO_ZERO_IN_DATE',
'NO_ZERO_DATE',
'ERROR_FOR_DIVISION_BY_ZERO',
'NO_AUTO_CREATE_USER',
'NO_ENGINE_SUBSTITUTION'
]
This will explicitly enable the other checks, but omits ONLY_FULL_GROUP_BY