摘要: #语法:CREATE VIEW 视图名称 AS SQL语句 create view teacher_view as select tid from teacher where tname='李平老师'; #于是查询李平老师教授的课程名的sql可以改写为 mysql> select cname fro 阅读全文
posted @ 2018-08-09 09:23 mumupa0824 阅读(259) 评论(0) 推荐(0) 编辑