如何将我的MySQL查询转换为Laravel Eloquent

Question

如何将这个MySQL查询写入Laravel的Eloquent？

SELECT
  products.pro_code               AS code,
  products.name               AS product,
  sum(ppurchases.quantity)    AS total_quantity,
  products.reorder_point      AS reorder_point,
  products.selling_price      AS selling_price,
  min(ppurchases.expiry_date) AS nearest_expiry
FROM `ppurchases`
  JOIN `products`
WHERE ppurchases.product_id = products.id
GROUP BY products.name

我写的如下，但无法成功。

$products = DB::table('products')
                ->JOIN('ppurchases','ppurchases.product_id', '=','products.id')
                ->select('products.pro_code as code','products.name as product','products.reorder_point as reorder_point','products.selling_price as selling_price',DB::raw('min(ppurchases.expiry_date) as nearest_expiry'))
                ->where('ppurchases.product_id','products.id')
                ->groupBy('products.name')
                ->get();

Answer 1

在使用Raw

时使用每个前缀

$products = DB::table('products')
    ->join('ppurchases', 'ppurchases.product_id', '=', 'products.id')
    ->select(
        'products.name as product',
        DB::raw('min(per_ppurchases.expiry_date) as nearest_expiry')
    )
    ->groupBy('products.name')
    ->get();

Answer 2

编辑：更新到新表名。

由于默认的Homestead sql_mode = only_full_group_by标志，我收到了非聚合列错误。添加2加法MAX（你可以用MIN（）代替，或AVG（）似乎可以解决问题。

$result = DB::table('per_ppurchases')
    ->join('per_products', 'per_ppurchases.product_id', '=', 'per_products.id')
    ->select(
        'per_products.name                       as code',
        'per_products.name                       as product',
        DB::raw('SUM(per_ppurchases.quantity)    as total_quantity'),
        DB::raw('MAX(per_products.reorder_point) as reorder_point'),
        DB::raw('MAX(per_products.selling_price) as selling_price'),
        DB::raw('MIN(per_ppurchases.expiry_date) as nearest_expiry')
    )
    ->groupBy('per_products.name')
    ->get();