Question

I am wondering what is better to do. I have a pulled back a query like this:

Array
(
[_id] => MongoId Object
    (
        [$id] => 4eeedd9545c717620a000007
    )
[field1] => ...
[field2] => ...
[field3] => ...
[field4] => ...
[field5] => ...
[field6] => ...

[votes] => Array
    (
        [whoVoted] => Array
            (
                [0] => 4f98930cb1445d0a7d000001
                [1] => 4f98959cb1445d0a7d000002
                [1] => 4f88730cb1445d0a7d000003
            )

    )

)

Which would be faster:

1. Pull that entire array in 1 query and use in_array() to find the right id?
2. Pull everything from the first query except the votes and then do another mongodb query to see if that id exist in the array?

Answer 1

It Depends on a lot of factors that I suggest you test but IMO most of the time it would be faster to just do 2 querys