如何在laravel中使用join来获取多个记录，我有多个记录，并且我想要该记录group_concat来获取

Question

$userdata=DB::table('user_personal_info')
        ->leftjoin('chat_user', 'user_personal_info.user_id', '=', 'chat_user.id')

Answer 1

I think this will be more easy:

  $sql = 'SELECT GROUP_CONCAT(chat_user) as user, 
        user_id,user_personal_info.user_id FROM TableName 
        where user_personal_info.user_id = chat_user.id GROUP BY 
        user_personal_info.user_id';
  $users = DB::select($sql, []);

Try above code instead of yours and kindly make changes as per your requirement.