By: Laurent Schneider

Laurent Schneider — Thu, 08 Nov 2007 10:37:36 +0000

drop table emp;
create table emp as select * from scott.emp ;
host sleep 30 ;
delete emp where ename=’SCOTT’;
insert into emp(ename,empno,sal) values (‘MIKE’,7788,100);
commit;
EMPNO ENAME ABSOLUTE_RAISE PERCENTAGE_RAISE VERSIONS_STARTTIME
———- ———- ————– —————- ———————
7788 SCOTT 2900 2900 08-NOV-07 11.32.37 AM

Scott did not get a salary increase of 2900, new employee Mike started with a salary which is 30x smaller…

I would add a condition on versions_operation to filter only updates.

Comments on: The Great Oracle SQL Quiz – answers to two sample questions – why we do no longer need journalling tables

By: Laurent Schneider