What are all the location codes and location names?
SELECT location_code ,  location_name FROM Ref_locations
SELECT location_code ,  location_name FROM Ref_locations
[{'Location_Code': 'b', 'Location_Name': 'Brazil'}, {'Location_Code': 'c', 'Location_Name': 'Canada'}, {'Location_Code': 'e', 'Location_Name': 'Edinburgh'}, {'Location_Code': 'n', 'Location_Name': 'Nanjing'}, {'Location_Code': 'x', 'Location_Name': 'Xiamen'}]