sql - Best way to join unique month and year from db in rails 3 ( or otherwise ) -

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i trying figure out nice way of doing , thought maybe there nicer way in newer rails 3.0 activerecord query.

i have bunch of posts have published_at field.

now want present archive in sidebar unique months , year contains posts , display archive. what's best way avoiding heavy hits on db on every pageload? suggestions?

you need query along lines of select distinct date_format(published_at, '%m %y'), count(id) posts group 1. it's trivial matter convert ar syntax.


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