如何在laravel

Question

我在使用Laravel Query Builder时遇到了一些麻烦。我想转换此SQL查询：

select (select sum(amount) from transactions t
            join sale w on w.id = t.sale_id
            join types s on s.id = w.type_id
            where s.name = 'Bronze'
        ) as sum_amount
    from transactions
    limit 1;

如何在我的laravel查询构建器上实现此查询？ 我正在使用laravel 5.2

希望有人帮助我:)谢谢

Answer 1

你可以试试这个：

DB::table('transactions')
  ->select(DB::raw("(select sum(amount) from transactions t
      join sale w on w.id = t.sale_id
      join types s on s.id = w.type_id
      where s.name = 'Bronze'
  ) as sum_amount"))
  ->take(1)
  ->get();

希望这有帮助