我正在寻找一个数据库实例，我可以尝试一些像这样的SQL查询（不是MYSql）......
CREATE TABLE membertable
(Member_id NUMBER(5) UNIQUE,
Member_Name VARCHAR2(30),
Member_Address VARCHAR2(50),
Acc_Open_Date DATE,
Membership_type VARCHAR2(20),
Fees_paid Number(4),
Max_Books_Allowed Number(2),
Penalty_Amount Number(7,2)
);