Table schema:
CREATE TABLE shop (Shop_Name VARCHAR, Shop_ID VARCHAR); CREATE TABLE stock (Device_ID VARCHAR, Shop_ID VARCHAR); CREATE TABLE device (Carrier VARCHAR, Device_ID VARCHAR)

Question: Show names of shops and the carriers of devices they have in stock.
SQL: SELECT T3.Shop_Name, T2.Carrier FROM stock AS T1 JOIN device AS T2 ON T1.Device_ID = T2.Device_ID JOIN shop AS T3 ON T1.Shop_ID = T3.Shop_ID