human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Name, Case type, Bullet diameter, Neck diameter, Base diameter, Rim diameter, Case length, Cartridge length
###Question: Which Bullet diameter has a Neck diameter of 12.17 (.479)?
gpt
SELECT Bullet diameter FROM table WHERE Neck diameter = 12.17 (.479)