String sql =
"CREATE TABLE coupon53 (
id BIGINT PRIMARY KEY,
title VARCHAR(25),
start_date DATE,"+ " end_date DATE,
amount INT,
type ENUM ('Food', 'Electric', 'Travelling', 'Entertainment', 'Sport'))";
String sql = "CREATE TABLE coupon40 (id BIGINT PRIMARY KEY, title VARCHAR(25), start_date DATE,"
+ " end_date DATE,"
+ "amount INTEGER, type varchar(20) NOT NULL CHECK (type IN('Food', 'Electric', 'Traveling', 'Entertainment', 'Sport')), "
+ "message VARCHAR(25), price DOUBLE PRECISION, image VARCHAR(25))";