对DB::raw和Eloquent使用相同查询得到不同的结果

在运行Eloquent连接查询时得到了一些意想不到的结果。使用完全相同的查询，我得到两个不同的结果。一个使用DB::raw()，另一个使用Eloquent。

在Eloquent查询中，匹配

where squad_user.leave_time >= seasons.start_time

缺失，不会包含在结果集中。匹配

or squad_user.leave is null

将包括在内。

这是两个查询结果的唯一区别。原始查询实际上生成所需的结果集。

真正让我困惑的是，如果我检查查询日志，无论是Laravel的还是MySQL的，当运行raw和Eloquent查询时，我得到完全相同的查询。

原始查询(运行Eloquent查询时从查询日志中获得的实际查询)

return 'DB::select('DB::raw('
        select users.*
        from users
        inner join squad_user on users.id = squad_user.user_id
        inner join seasons on squad_user.squad_id = seasons.squad_id
        where squad_user.join_time <= seasons.end_time
        and (squad_user.leave_time >= seasons.start_time or squad_user.leave_time is null)
        and seasons.id = :seasonId
    '),
    ['seasonId' => 3]
);

雄辩的查询

return User::join('squad_user', 'users.id', '=', 'squad_user.user_id')
           ->join('seasons', 'squad_user.squad_id', '=', 'seasons.squad_id')
           ->where('squad_user.join_time', '<=', 'seasons.end_time')
           ->where(function ($query)
           {
               $query->where('squad_user.leave_time', '>=', 'seasons.start_time')
                     ->orWhereNull('squad_user.leave_time');
           })
           ->where('seasons.id', 3)
           ->get(['users.*']);

Laravel的Eloquent查询日志

select `users`.*
from `users`
inner join `squad_user` on `users`.`id` = `squad_user`.`user_id`
inner join `seasons` on `squad_user`.`squad_id` = `seasons`.`squad_id`
where `squad_user`.`join_time` <= seasons.end_time
and (`squad_user`.`leave_time` >= seasons.start_time or `squad_user`.`leave_time` is null)
and `seasons`.`id` = 3
{"bindings":["seasons.end_time","seasons.start_time",3],"time":0.38,"name":"mysql"}

MySQL关于Eloquent查询的general_log

select `users`.*
from `users`
inner join `squad_user` on `users`.`id` = `squad_user`.`user_id`
inner join `seasons` on `squad_user`.`squad_id` = `seasons`.`squad_id`
where `squad_user`.`join_time` <= ?
and (`squad_user`.`leave_time` >= ? or `squad_user`.`leave_time` is null)
and `seasons`.`id` = ? 

MySQL关于Raw查询的general_log

select users.*
            from users
            inner join squad_user on users.id = squad_user.user_id
            inner join seasons on squad_user.squad_id = seasons.squad_id
            where squad_user.join_time <= seasons.end_time
            and (squad_user.leave_time >= seasons.start_time or squad_user.leave_time is null)
            and seasons.id = ?