摘要: 山东大学数据库实验 2-1 create or replace view test2_01 as (select sid,name from pub.student where sid not in (select sid from pub.student_course) ) 2-2 create 阅读全文
posted @ 2020-10-07 22:04 yesuweiYYYY 阅读(472) 评论(0) 推荐(1) 编辑