human
Schema:
Manufacturers (Code, Name, Headquarter, Founder, Revenue)
Products (Code, Name, Price, Manufacturer)
Please answer with SQL.
assistant
Sure, I understand.
human
What is the number of projects that Sony doesn't manufacture?
assistant
SELECT COUNT( DISTINCT name ) FROM products WHERE name NOT IN ( SELECT T1.name FROM products AS T1 JOIN manufacturers AS T2 ON T1.Manufacturer = T2.code WHERE T2.name = "Sony" ) ;