请问执行下面oracle数据库建表:ORA-00907错误: 提示缺失右括号,是什么问题?
create table WORKERS(
WorId NUMBER(10) NOT NULL,
WorName VARCHAR(10) NOT NULL,
Gender VARCHAR(10) NOT NULL,
Age NUMBER(2) NOT NULL,
JoinDate DATE NULL,
WKId NUMBER(3) NOT NULL,
WorkshopName VARCHAR(50) NOT NULL
Address VARCHAR2(50) NULL );