Question

如何为多个表编写查询，例如

"select  items.id, items.name, sum(qty) as qty  from dispatch_main 
    inner join dispatch_detail on dispatch_main.id = dispatch_detail.id
    inner join items on items.id = dispatch_detail.item_id
    left outer join customers on dispatch_detail.customer = customers.id
    where dispatch_main.entry_type in ('Purchase','Return','Confirmed') and 
    dispatch_main.to_=$location and items.for_customer in ($types)
    group by dispatch_detail.item_id
    order by  items.id
    ";

OR

"select items.id, items.name, sum(qty) as qty  from dispatch_main 
    inner join dispatch_detail on dispatch_main.id = dispatch_detail.id
    inner join items on items.id = dispatch_detail.item_id
    left outer join customers on dispatch_detail.customer = customers.id
    where dispatch_main.entry_type in ('Dispatch','Confirmed') and 
    dispatch_main.from_=$location and items.for_customer in ($types)
    group by dispatch_detail.item_id
    order by  items.id
    "

在laravel 5.4？ DB :: statement可以运行这种类型的查询吗？如果我在DB :: statement（''）中编写相同类型的查询;

Answer 1

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试试这个并且总是避免写RAW查询，直到你完全没有。

Answer 2

你应该试试这个：

DB::table('dispatch_main')
   ->select('items.id',DB::raw('SUM(dispatch_main.qty) as qty'))
   ->join('dispatch_detail', 'dispatch_main.id', '=', 'dispatch_detail.id')
   ->join('items', 'dispatch_detail.item_id', '=', 'items.id')
   ->join('customers', 'dispatch_detail.customer', '=', 'customers.id')
   ->whereIn('dispatch_main.entry_type', ['Purchase','Return','Confirmed'])
   ->where('dispatch_main.to_', $location)
   ->whereIn('items.for_customer', $types)
   ->groupBy('dispatch_detail.item_id')
   ->orderBy('items.id')
   ->get()
   ->toArray();

希望这对你有用!!!

Laravel中的自定义查询

2 个答案: