将Raw SQL查询转换为Laravel数据库查询

Question

我有以下原始SQL查询：

select a.id user_id, a.email_address, a.name_first, a.name_last, count(b.id) number_of_videos, sum(b.vimeo_duration) total_duration, sum(b.count_watched) total_playbacks
  from users a,
       videos b
 where a.id = b.tutor_id
   and a.email_address in ('[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]')
 group by a.id;

这正确地从数据库中获取6行。我正在尝试将此转换为Laravel数据库查询，如下所示：

$totals = DB::table('users')
                    ->select(DB::Raw('users.id as user_id'), 'users.email_address', 'users.name_first', 'users.name_last', DB::Raw('count(videos.id) as number_of_videos'), DB::Raw('sum(videos.vimeo_duration) as total_duration'), DB::Raw('sum(videos.count_watched) as total_playbacks'))
                    ->join('videos', 'users.id', '=', 'videos.tutor_id')
                    ->where('users.id', 'videos.tutor_id')
                    ->whereIn('users.email_address', array('[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]'))
                    ->groupBy('users.id')
                    ->get();

然而，这返回0行。有什么我想念的吗？

Answer 1

它应该像下面一样，即使是groupBy用户ID也没有多大帮助，因为id是唯一的。

$aggregates = [
    DB::raw('count(b.id) as  number_of_videos'),
    DB::raw('sum(b.vimeo_duration) as  total_duration'),
    DB::raw('sum(b.count_watched) as total_playbacks'),
];

$simpleSelects = ['users.email_address', users.id, 'users.name_first', 'users.name_last'];

$emails = ['[email protected]', '[email protected]'....]

$users = Users::select(array_merge($simpleSelects, $aggregates))
    ->leftJoin('videos as b', function ($join) use ($emails) {
        $join->on('b.tutor_id', 'a.id')
            ->whereIn('users.email_address', $emails);
    })
    ->groupBy('users.id')
    ->get();

Answer 2

尝试删除此行：

->where('users.id', 'videos.tutor_id')

Answer 3

1. 项目清单 sql代码转换成laravel后
2. DB：选择（ 'posts.id'， 'posts.title'， 'posts.body'）

                                      ->from('posts')
                                   ->where('posts.author_id', '=', 1)
                                   ->orderBy('posts.published_at', 'DESC')
                                   ->limit(10)
                                   ->get();