小编EFr*_*Fri的帖子

这是一个搜索功能,可以返回每个成员注册的最近年份.

我让它使用DB :: raw()调用.但无法让它与查询构建器一起使用.

工作守则:

$query = DB::table('membership as m');
$query->join(
    DB::raw(
        '(SELECT my.*
        FROM membership_years my
        INNER JOIN (
            SELECT member_id,MAX(membership_year) AS max_my
            FROM membership_years
            GROUP BY member_id
        ) my2
        ON my.member_id = my2.member_id
        AND my.membership_year = my2.max_my
        ) my'
    )
,'m.id','=','my.member_id');

我对查询构建器代码的尝试:

$query = DB::table('membership as m');
$query->join('membership_years as my',
  function($j1){
    $j1->join('membership_years as my2',
      function($j2){
        $j2->where('my.membership_year','=','MAX(my2.membership_year)')
        ->on('my.member_id','=','my2.member_id');
      }
    )->on('m.id','=','my.member_id');
  }
);

产生的错误是:

调用未定义的方法Illuminate\Database\Query\JoinClause :: join()

我不确定这是否因为$j2无法再访问join方法了？

原始MySQL查询:

SELECT my.membership_year,m.*
FROM membership AS m 
INNER JOIN
    ( …