Jonathan Lewis wrote:
> <sunh11373_at_gmail.com> wrote in message
> news:1155426742.867263.327670_at_p79g2000cwp.googlegroups.com...
>> Hi,
>>
>> If I have a table which has 1 billion rows (data in each row is
>> relatively small), delcare one column (not the primary key column) as
>> unique, will this cause big problem for inserting?
>> Assume the inserting rate is 500/sec and the possible duplication is
>> 0.001%.
>>
>> Thanks
>>
>
>
> That's a question worth a bit of discussion,
> so I've put jotted down a few thoughts in a short
> article on my website.
>
> http://www.jlcomp.demon.co.uk/unique_constraint.html
Thank you.
--
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org
Received on Sun Aug 13 2006 - 15:22:59 CDT
