| select time_by_day.the_year as c0, time_by_day.quarter as c1, time_by_day.month_of_year as c2, sum(sales_fact_1997.unit_sales) as m0 from time_by_day as time_by_day, sales_fact_1997 as sales_fact_1997 where sales_fact_1997.time_id = time_by_day.time_id and time_by_day.month_of_year = 4 group by time_by_day.the_year, time_by_day.quarter, time_by_day.month_of_year; |