I have a student collection like below,

```
{_id:22222, student_id:1}
{_id:22223, student_id:2}
{_id:22224, student_id:3}
{_id:22225, student_id:4}

```

I have an array like [1,2], and I want to return only the documents that as the same student\_id in the array.

if the array is [1,3], the output should be also in an array
[1,3]

if I have array like [4,7], and since 7 is not a valid student\_id, it should return only
[4]