มีร้านอาหารอียิปต์กี่ร้านในเอดินบะระ ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
How many Egyptian restaurant are there in Edinburgh ?It is not neccessary to use all the tables.
 category:  id [ int]  business_id [ varchar]  category_name [ varchar] 
SELECT COUNT(DISTINCT (business.name)) FROM business, category AS CATEGORY_0, category AS CATEGORY_1 WHERE business.city = 'Edinburgh' AND CATEGORY_0.business_id = business.business_id AND CATEGORY_0.category_name = 'restaurant' AND CATEGORY_1.business_id = business.business_id AND CATEGORY_1.category_name = 'Egyptian'