摘要: 1.建表语句 CREATE TABLE test1 (cust_nbr number(5) NOT NULL, region_id Number(5) NOT NULL, salesperson_id number(5) NOT NULL, YEAR number(4) NOT NULL, MONT 阅读全文
posted @ 2019-07-29 16:38 Smilevv-45 阅读(225) 评论(0) 推荐(0) 编辑