Getting the highest value of a column in MongoDB

Question

I\'ve been for some help on getting the highest value on a column for a mongo document. I can sort it and get the top/bottom, but I\'m pretty sure there is a better way to d

Answer 1

Assuming I was using the Ruby driver (I saw a mongodb-ruby tag on the bottom), I'd do something like the following if I wanted to get the maximum _id (assuming my _id is sortable). In my implementation, my _id was an integer.

result = my_collection.find({}, :sort => ['_id', :desc]).limit(1)

To get the minimum _id in the collection, just change :desc to :asc