Laravel：whereIn子查询

文档

• ​​https://learnku.com/docs/laravel/9.x/queries/12246#08034f​​

示例如下

$users = User::whereNotIn('id', function ($query) use($user){
            $query->select('user_id')
                   ->from('tb_relation')
                   ->where('tb_relation.userId', $user->id);
});

参考
​laravel whereNotIn where子查詢​​