1.9.3-p0 :004 > Statistic.where(:id=>234, :website_id=>12)
  Statistic Load (0.4ms)  SELECT "statistics".* FROM "statistics" WHERE "statistics"."id" = 234 AND "statistics"."website_id" = 12
 => [#<Statistic id: 234, organic_visits: 55, paid_visits: nil, organic_conversions: 0, paid_conversions: nil, organic_conversion_rate: #<BigDecimal:7ff1ac238e80,'0.0',9(36)>, paid_conversion_rate: nil, date: "2012-01-05 00:00:00", website_id: 12, created_at: "2012-02-07 17:27:21", updated_at: "2012-02-07 17:27:21">]
1.9.3-p0 :005 > Statistic.where(:date=>"2012-01-05", :website_id=>12)
  Statistic Load (0.6ms)  SELECT "statistics".* FROM "statistics" WHERE "statistics"."date" = '2012-01-05' AND "statistics"."website_id" = 12
 => []