postgres=#
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric CHECK (price > 0),
postgres(# discounted_price numeric,
postgres(# CHECK (discounted_price > 0 AND price > discounted_price)
postgres(# );
CREATE TABLE
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
|