| select store.store_country as c0, time_by_day.the_year as c1, time_by_day.quarter as c2, product_class.product_family as c3, sum(sales_fact_1997.unit_sales) as m0 from store as store, sales_fact_1997 as sales_fact_1997, time_by_day as time_by_day, product_class as product_class, product as product where sales_fact_1997.store_id = store.store_id and store.store_country = 'USA' and sales_fact_1997.time_id = time_by_day.time_id and time_by_day.the_year = 1997 and time_by_day.quarter in ('Q2', 'Q3') and sales_fact_1997.product_id = product.product_id and product.product_class_id = product_class.product_class_id and product_class.product_family = 'Food' group by store.store_country, time_by_day.the_year, time_by_day.quarter, product_class.product_family; |