ITPub博客

LAG(EXPRESSION,<OFFSET>,<DEFAULT>)SQL> with a as (select 1 id,'a' name from dual 2 union 3 select 2 id,'b' name from dual 4 union 5 select 3 id,'c' name from dual 6 union 7 select 4 id,'d' name from dual 8 union 9 select 5 id,'e' name from dual 10 ) 11 select id,name,lag(id,1,'')over(order by name) from a 12 / ID NAME LAG(ID,1,'')OVER(ORDERBYNAME)---------

LAG(EXPRESSION,<OFFSET>,<DEFAULT>)SQL> with a as (select 1 id,'a' name from dual2 union3 select 2 id,'b' name from dual4 union5 select 3 id,'c' name from dual6 union7 select 4 id,'d' name from dual8 ...

oracle 發郵件

10G的WEBUTIL的配置

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ORACLE 應用經驗(form)

ERP100 論壇,ORACLE ERP

1、连接SQL*Plus system/manager2、显示当前连接用户SQL> show user3、查看系统拥有哪些用户SQL> select * from all_users;4、新建用户并授权SQL> create user a identified by a;（默认建在SYSTEM表空间下）SQL> gr...

SQL> select version from v$instance; VERSION-----------------10.2.0.1.0 SQL> SQL> create table IDTABLE 2 ( 3 id number, 4 val varchar2(20) 5 ) 6 ; Table created SQL> SQL> insert into ID...

Oracle提供了几个包，它们可以用来完成很多任务，从内部进程通信到文件I/O，到在PL/SQL块中动态创建和执行SQL语句。所有这些包由SYS用户所拥有—当Oracle最初安装时两个用户中的一个，这些包中最重要的包括： 　　　...

方法一：copy from bm/bm123@whora.kimo to bm/bm123@test replace bm.bmt_Seq using select * from bmt_seq;方法二：create database link errrconnect to bm identified by bm123using '(DESCRIPTION = (ADDRES...

我现有表结构如下：t_id t_type t_flag 1 水果 过期2 食品 正常3 干果 正常4 水果 正常5 水果 过期6 食品 过期现在我想查询的结果如下：t...