@numRows = count_by_sql("SELECT COUNT(DISTINCT Opinions.id), SUM (Ratings.score) as score_sum FROM Opinions LEFT JOIN Ratings ON Opinions.id = Ratings.opinion_id WHERE score_sum > 20")
Will return us the SUM of COUNT(DISTINCT Opinions.id) AND SUM (Ratings.score). But we only need the value of COUNT(DISTINCT Opinions.id)
Is there a way to achieve that in rails?
