Model.where(:date_column => date) Model.where('extract(year from date_column) = ?', desired_year) Model.where('extract(month from date_column) = ?', desired_month) Model.where('extract(day from date_column) = ?', desired_day_of_month)
NewsFeed.count(:group=>"date_trunc('month', created_at)",:conditions=>"user_id NOT IN (?)",[exluded_ids])
