select time_by_day.the_year as c0, time_by_day.quarter as c1, customer.gender 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, customer as customer where sales_fact_1997.time_id = time_by_day.time_id and time_by_day.the_year = 1997 and sales_fact_1997.customer_id = customer.customer_id group by time_by_day.the_year, time_by_day.quarter, customer.gender;