ActiveRecord find_each combined with limit and order

Question

I\'m trying to run a query of about 50,000 records using ActiveRecord\'s find_each method, but it seems to be ignoring my other parameters like so:

Answer 1

I was looking for the same behaviour and thought up of this solution. This DOES NOT order by created_at but I thought I would post anyways.

max_records_to_retrieve = 50000
last_index = Thing.count
start_index = [(last_index - max_records_to_retrieve), 0].max
Thing.active.find_each(:start => start_index) do |u|
    # do stuff
end

Drawbacks of this approach: - You need 2 queries (first one should be fast) - This guarantees a max of 50K records but if ids are skipped you will get less.