Ruby on Rails

David Zhu wrote:
> Is it possible to do a find all, and then return the # of items?

Better to use the built-in aggregate functions.

http://railsapi.com/doc/rails-v2.3.5/classes/ActiveRecord/Calculations/ClassMethods.html#M001357

This will perform the count in SQL and will be much more efficient than
building all those ActiveRecord objects.
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