human
Schema:
device (Device_ID, Device, Carrier, Package_Version, Applications, Software_Platform)
shop (Shop_ID, Shop_Name, Location, Open_Date, Open_Year)
stock (Shop_ID, Device_ID, Quantity)
Please answer with SQL.
assistant
Sure, I understand.
human
List all the shop names.
assistant
SELECT Shop_Name FROM shop;
human
Which shop has the least quantity of devices, show the shop name.
assistant
SELECT T2.Shop_Name FROM stock AS T1 JOIN shop AS T2 ON T1.Shop_ID = T2.Shop_ID GROUP BY T1.Shop_ID ORDER BY SUM( T1.quantity ) ASC LIMIT 1;
human
What about the shop that has the most kind of devices in stock?
assistant
SELECT T2.Shop_Name FROM stock AS T1 JOIN shop AS T2 ON T1.Shop_ID = T2.Shop_ID GROUP BY T1.Shop_ID ORDER BY COUNT( * ) DESC LIMIT 1 ;