标签：class not from pre style 数据库 实验 where student
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 or replace view test2_02 as select sid,name from pub.student where sid in (select sid from pub.student_course where cid in (select cid from pub.student_course where sid=200900130417));
2-3
create or replace view test2_03 as select sid,name from pub.student where sid in (select sid from pub.student_course where cid in (select cid from pub.course where fcid=300002));
标签：class not from pre style 数据库 实验 where student
原文地址：https://www.cnblogs.com/war1111/p/11488012.html
