Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> Re: index full scan over an index fast full scan in an analytic function?

Re: index full scan over an index fast full scan in an analytic function?

From: Vladimir Begun <Vladimir.Begun_at_oracle.com>
Date: Fri, 24 Oct 2003 18:04:26 -0800
Message-ID: <F001.005D43EC.20031024180426@fatcity.com>


Vladimir Begun wrote:
> Tanel Poder wrote:

>> FFS will scan from index header block (note that index segment header and
>> index root block are different ones) up to segment high water mark using
>> multiblock reads and ignoring contents of root, branch, bitmap, extent 
>> map,
>> freelist group blocks. Rows are returned as they've read from blocks, 
>> thus
>> no order can be guaranteed.

>
> "Rows are returned as they've read from blocks, thus no order can be
> guaranteed."
>
> Not rows, but blocks returned as is in order they being read. Keys (rows)
> are ordered inside leaf blocks -- as you wrote above. So, inside the blocks
> the order is consistent but blocks are 'mixed' whilst read.

Looks, like my text recognition engine got a glitch... ignore that message, please.

-- 
Vladimir Begun
The statements and opinions expressed here are my own and
do not necessarily represent those of Oracle Corporation.

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Vladimir Begun
  INET: Vladimir.Begun_at_oracle.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).
Received on Fri Oct 24 2003 - 21:04:26 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US