| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> Re: Counting number of rows, sequences
To use a sequences is a good idea ALWAYS this is a table that only inserts
tables, and few deletes and rollbacks.
if you rollback or delete (unless you rollback or delete too much records),
there will be a small difference you could fix every day or every week.
I think the point here is to give ideas, maybe from one of them we will get
a better one.
I think the only real solutions I personally see is COUNT(*), or get it from
recent statistics.
But other ideas could be usefull in some specific situation like t his.
And what happens when any rows get deleted? ;)
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jan Pruner
Sent: 17 February 2004 22:31
To: oracle-l_at_freelists.org
Subject: Re: Counting number of rows, sequences
Sorry to say it, but this is not a good idea.
Sequence doesn't rollback in case the transaction is not commited. And
CURRVAL is local to user session. "Note that before you use CURRVAL for
a sequence in your session, you
must first initialize the sequence with NEXTVAL."
JP
Juan Cachito Reyes Pacheco wrote:
> The other choice if you have to frecuently do counts to that table is
> a sequence
>
> You create an addiatoinal field with a sequence
>
> CREATE SEQUENCE, etc.
>
> row sequence
>
> 1 1
> 2 2
> ....
> 1234 1234
-- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.581 / Virus Database: 368 - Release Date: 09/02/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.581 / Virus Database: 368 - Release Date: 09/02/2004 ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request_at_freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request_at_freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------Received on Wed Feb 18 2004 - 07:49:41 CST
 |
 |