Hi
infact creating the table as sorted data from another table works with oracle 8.1.6.3.0 as:
create table agrs
as select * from agreements
order by agr_agreement_number desc;
Is this OK??
Vijay
From: Connor McDonald[SMTP:hamcdc_at_yahoo.co.uk]
Reply To: ORACLE-L_at_fatcity.com
Sent: Monday, May 28, 2001 4:05 PM
To: Multiple recipients of list ORACLE-L
Subject: Re: Creating a sorted table
There is a very good reason for having data
"approximately" in physical order - it can
dramatically improve your buffer hit rates.
IOT's are great for this, but if you're on an earlier
version then the occasional job to "pseudo-cluster"
the data can be a very good thing...
Cheers
Connor
- Diana_Duncan_at_ttpartners.com wrote: >
> Whyever would you want data inserted in order?
> There is no guarantee that
> Oracle will actually store the records "in order",
> there is no performance
> gain, and you can always retrieve the records in
> order by using an order by
> statement -- if you really need ordered data, you
> could use a
> index-organized table with all of your columns, with
> the date as the first
> column. But methinks this would be dangerous for a
> heavy transaction
> table. (Gurus, please correct me if I'm wrong here)
>
> However, if you are still keen, you could do this
> through a PL/SQL block,
> something like the following:
>
> declare
> cursor get_data is
> select col1, col2, col3, ...
> from unordered_table
> order by whatever;
> begin
> for dataRec in get_data loop
> insert into ordered_table (col1, col2,
> col3, ...)
> values (dataRec.col1, dataRec.col2,
> dataRec.col3, ...)
> end loop;
> end;
> /
>
> Cheers!
>
> Diana
>
>
>
>
>
>
> "Browett, Darren"
>
>
> <dbrowett_at_city.coquit To:
> Multiple recipients of list ORACLE-L
> <ORACLE-L_at_fatcity.com>
> lam.bc.ca> cc:
>
>
> Sent by: Fax
> to:
>
> root_at_fatcity.com
> Subject: Creating a sorted table
>
>
>
>
>
>
>
> 05/25/2001 06:45 PM
>
>
> Please respond to
>
>
> ORACLE-L
>
>
>
>
>
>
>
>
>
>
>
>
> We have un-ordered data in a table that needs to be
> inserted into a
> transaction table in
> order of the date that the transaction took place.
>
> Oracle does not allow "INSERT ..... AS SELECT .....
> ORDER BY....."
> or "CREATE TMP_TABLE ..... AS SELECT ..... ORDER
> BY......"
>
> Is there a method by which I can accomplish this.
>
> Thank you in advance
>
> Darren Browett
> Sys Admin
> City of Coquitlam
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Browett, Darren
> INET: dbrowett_at_city.coquitlam.bc.ca
>
> Fat City Network Services -- (858) 538-5051 FAX:
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Connor McDonald
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Received on Tue May 29 2001 - 05:24:07 CDT
