Laravel：如何在查询中计数

Question

我有以下查询：

App\User::join('gift_sents', function($builder){
      $builder->on('gift_sents.receiver_id', '=', 'users.id');
      })
      ->select('users.*', 'COUNT(gift_sents.receiver_id as total_posts')
      ->groupBy('gift_sents.id')
      ->orderBy('total_posts', 'ASC')
      ->limit(3)->get();

计数不工作，它应该工作！

出现以下错误：

Column not found: 1054 Unknown column 'COUNT(gift_sents.receiver_id' in 'field list' (SQL: select用户.*,计数（gift_sents .receiver_id astotal_postsfrom用户inner joingift_sents ongift_sents .receiver_id=用户.id group bygift_sents .id order bytotal_postsasc limit 3)

Answer 1

我认为应该是：

  ->select('users.*', DB::raw('COUNT(gift_sents.receiver_id) as total_posts'))

请参阅此处的文档-“原始表达式”部分