摘要:
在Oracle数据库中,数据分页功能是必不可少的操作,Oracle数据库分页查询语句有三种写法:--1.根据ROWID 来分select * from nmb where rowid in(select rid from (select rownum rn,rid from (select rowi... 阅读全文
摘要:
--创建表create table employee( userId number not null, userName varchar2(50), pwd varchar2(50), email varchar2(100), clazz number);--向表中插入数据INSERT INTO e... 阅读全文
摘要:
oracle中对重复数据的查询和删除操作--1.查询表中username=‘lingjie’的重复记录select userid,username from nmb where username in(select username from nmb group by username having... 阅读全文