This is cool! Re: multiple aggregates in one query, I wrote a Ruby gem that adds an even-more-powerful and multi-database-compatible version to ActiveRecord. (I

This is cool! Re: multiple aggregates in one query, I wrote a Ruby gem that adds an even-more-powerful and multi-database-compatible version to ActiveRecord. (I have tested Postgres, MySQL, and SQLite; others probably work, too.) https://github.com/midnightmonster/activerecord-summarize https://github.com/midnightmonster/activerecord-summarize