一.顺序表 1.线性表 //java顺序表的实现,如ArrayList就是用线性表实现的,优点是查找快,缺点是添加或删除要移动很多元素,速度慢 public class SequenceList { private int MAXLENGTH;//顺序表大小 private int count;//线性表存在数据个数 private Data[] data; //数据储存 private static class Data{ String name; int stuNo; int scores;
问题1:删除表空间期间遭遇报错 ORA-29857 问题2:删除表空间期间遭遇 ORA-02429 问题3:表空间删除完毕,主机磁盘空间不释放 问题1:删除表空间期间遭遇报错 ORA-29857 删除表空间语句:DROP TABLESPACE SAC INCLUDING CONTENTS AND DATAFILES; 根据MOS文档: How To Resolve ORA-29857 During a Drop Tablespace although No Domain Index exists
想删除本地一个项目目录,结果windows说路径太长,不能删除.于是试了试java删除.一切ok.以后一定要抓紧时间学python. /** * Created by rmiao on 4/21/2016. */ public class TestDel { public static void main(String[] args) throws IOException { String dest = "D:\\perforce\\workspace2\\EPC"; File fil
1.查询表中重复数据.select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)2.删除表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断,只留有rowid最小的记录delete from people where peopleId in (select peopleId
首先以DBA连接到数据库:sqlplus / as sysdba; --创建表空间 create tablespace test_tablespace datafile 'D:\developer\oracle\product\10.2.0\oradata\orcl\test.dbf' size 1024M;--创建用户 create user test identified by test default tablespace test_tablespace;--授权 grant dba,co