如何查詢構建器選擇內部選擇laravel

Question

我在Laravel Query Builder中遇到了一些問題。我想轉換此SQL查詢：

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查詢生成器上實現此查詢？ 我使用laravel 5.2

希望有人能幫助我:)謝謝

Answer 1

你可以試試這個：

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(); 

希望這有助於