CREATE TABLE manufacturers (code DECIMAL, name TEXT, headquarter TEXT, founder TEXT, revenue DECIMAL)
CREATE TABLE products (code DECIMAL, name TEXT, price DECIMAL, manufacturer DECIMAL)

What are the names of products produced by both Creative Labs and Sony?
SELECT T1.name FROM products AS T1 JOIN manufacturers AS T2 ON T1.manufacturer = T2.code WHERE T2.name = 'Creative Labs' INTERSECT SELECT T1.name FROM products AS T1 JOIN manufacturers AS T2 ON T1.manufacturer = T2.code WHERE T2.name = 'Sony'
SELECT "T1"."name" FROM "products" AS "T1" JOIN "manufacturers" AS "T2" ON "T1"."manufacturer" = "T2"."code" AND "T2"."name" = 'Creative Labs' INTERSECT SELECT "T1"."name" FROM "products" AS "T1" JOIN "manufacturers" AS "T2" ON "T1"."manufacturer" = "T2"."code" AND "T2"."name" = 'Sony'