demo04.sql

VC++是微软公司开发的一个IDE(集成开发环境),换句话说,就是使用c++的一个开发平台.有些软件就是这个编出来的

set linesize 121
set echo off
drop table t
/
drop table all_objects_unload
/
set echo on

clear screen
create or replace directory tmp as '/tmp'
/
exec utl_file.fremove( 'TMP', 'allobjects.dat' );
pause

clear screen
create table all_objects_unload
organization external
( type oracle_datapump
  default directory TMP
  location( 'allobjects.dat' )
)
as
select * from all_objects
/
pause

clear screen
!strings /tmp/allobjects.dat | head
pause

clear screen
select count(*) 
  from all_objects_unload
/
pause


clear screen
select owner, object_name, object_type 
  from all_objects_unload
 where rownum < 5;
pause


clear screen
drop table all_objects_unload;
create table t
( OWNER            VARCHAR2(30),
  OBJECT_NAME      VARCHAR2(30),
  SUBOBJECT_NAME   VARCHAR2(30),
  OBJECT_ID        NUMBER,
  DATA_OBJECT_ID   NUMBER,
  OBJECT_TYPE      VARCHAR2(19),
  CREATED          DATE,
  LAST_DDL_TIME    DATE,
  TIMESTAMP        VARCHAR2(19),
  STATUS           VARCHAR2(7),
  TEMPORARY        VARCHAR2(1),
  GENERATED        VARCHAR2(1),
  SECONDARY        VARCHAR2(1)
)
organization external
( type oracle_datapump
  default directory TMP
  location( 'allobjects.dat','allobjects.dat' )
)
/
pause

clear screen
select count(*) from t
/