demo01.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

create table t
as
select *
  from all_objects
 where 1=0;
select * from t;
set autotrace traceonly statistics
select * from t;
set autotrace off
insert into t select * from all_objects;
rollback;
select * from t;
set autotrace traceonly statistics
select * from t;
set autotrace off