CREATE TABLE products (
  -- strictly autogenerated
  id INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
  -- auto-generated but allows manual override
  sku_number INTEGER GENERATED BY DEFAULT AS IDENTITY,

  name VARCHAR(100) NOT NULL,
  price DECIMAL(10, 2) NOT NULL,
  discount_percent INTEGER DEFAULT 0 NOT NULL,

  final_price DECIMAL(10, 2) GENERATED ALWAYS AS (price * (1 - discount_percent / 100.0)) STORED
);