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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Re: SQL help needed
You raise an interesting idea in my mind...
How useful would it be for us if Oracle created an INFINITE_DUAL table - One where you could select as many rows as you wished. I guess it might be dangerous but it would at least be very efficient if Oracle coded it as a special table. Then you could just do things like "select rownum from infinite_dual where rownum <= 1000000" without concern or consideration.
As you said - you wouldn't use it every day, but I'm sure it would be handy to have. It would also provide new ways to crash Oracle I guess, with queries like "select rownum the_row from infinite_dual order by the_row". Hmm, perhaps this idea needs some additional thought? I'm sure it would be practical to create something which works efficiently and safely though.
Regards,
Mark.
"Stephane
Faroult" To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
<sfaroult_at_oriolec cc:
orp.com> Subject: RE: Re: SQL help needed
Sent by:
ml-errors_at_fatcity
.com
17/09/2003 18:39
Please respond to
ORACLE-L
>----- ------- Original Message ------- -----
>From: "Mark Richard" <mrichard_at_transurban.com.au>
>To: Multiple recipients of list ORACLE-L
><ORACLE-L_at_fatcity.com>
>Sent: Tue, 16 Sep 2003 19:59:41
>
>
>I guess I should have added some criteria like:
>
>1) user_objects must have enough rows in it to
>cover the range (if not
>consider some other table)
>
This one is a very interesting consideration. The use of 'pivot' tables, as
in this case, without being something you meet daily is fairly frequent
(completing series like here is one usage, otherwise I commonly use them to
generate test data). It should be some standard feature, a kind of
'extended dual' (XDUAL ?).
Perhaps this (to be run as SYS) should be added as a standard part of the
catalogue :
create view xdual
as select rownum from sys.col$;
grant select on xdual to public;
create public synonym xdual for xdual;
sys.col$ always contains a 'respectable' number of rows (10,000+, even without SAP :-)). Although indeed a standard sys.source$ is twice bigger just after install ..
Regards,
Stephane Faroult
Oriole
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stephane Faroult INET: sfaroult_at_oriolecorp.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). <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Privileged/Confidential information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply e-mail or by telephone on (61 3) 9612-6999. Please advise immediately if you or your employer does not consent to Internet e-mail for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of Transurban City Link Ltd shall be understood as neither given nor endorsed by it. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Privileged/Confidential information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such a case, you should destroy this message and kindly notify the sender by reply e-mail or by telephone on (03) 9612-6999 or (61) 3 9612-6999. Please advise immediately if you or your employer does not consent to Internet e-mail for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of Transurban Infrastructure Developments Limited and CityLink Melbourne Limited shall be understood as neither given nor endorsed by them. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mark Richard INET: mrichard_at_transurban.com.au 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 Wed Sep 17 2003 - 20:24:40 CDT
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