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

Select all the data from the products and each product's manufacturer.
SELECT * FROM products AS T1 JOIN manufacturers AS T2 ON T1.manufacturer = T2.code
SELECT * FROM "products" AS "T1" JOIN "manufacturers" AS "T2" ON "T1"."manufacturer" = "T2"."code"