RE: SQL

Hi Waseem,

When you decide to use 'group by' in your query, I can just suggest you to not use 'order by' clause, my reason is, it will makes your query running slow. Try to just use 'group by' clause without 'order by' clause, your query will running faster than when you include 'order by' clause. Have a nice day.

Rgrds,

Sony

> -----Original Message-----
> From: waseem khan [SMTP:waseem.khan_at_lycos.com]
> Sent: Thursday, February 06, 2003 10:40 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: SQL
>
> Lots of emails were sent yesterday, so in case if any kind soul had missed
> my request (which didn't bear any result), I am posting this again. Please
> help if you can.
>
> Thanks.
> --
>
> On Wed, 05 Feb 2003 09:59:29
> waseem khan wrote:
> >Folks,
> >
> >Is there a much better way of writing the following SQL statement,
> bearing in mind the performace hits due to the use of functions in the
> GROUP BY and ORDER BY clauses?
> >
> >SELECT TO_CHAR(TEST_DATE, 'MON RRRR') XXX, count(*)
> >FROM TBL_XYZ
> >WHERE TEST_VAL = DECODE(:P_VALUE, 'BEGIN', 'B', 'END', 'E')
> >AND TEST_DATE BETWEEN :P_START_DATE AND :P_END_DATE
> >GROUP BY TO_CHAR(TEST_DATE, 'MON RRRR')
> >ORDER BY TO_DATE('01 '||XXX);
> >
> >Thanks.
> >
> >
> >
> >_____________________________________________________________
> >Get 25MB, POP3, Spam Filtering with LYCOS MAIL PLUS for $19.95/year.
> >http://login.mail.lycos.com/brandPage.shtml?pageId=plus&ref=lmtplus
> >--
> >Please see the official ORACLE-L FAQ: http://www.orafaq.net
> >--
> >Author: waseem khan
> > INET: waseem.khan_at_lycos.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).
> >
> >
>
>
> _____________________________________________________________
> Get 25MB, POP3, Spam Filtering with LYCOS MAIL PLUS for $19.95/year.
> http://login.mail.lycos.com/brandPage.shtml?pageId=plus&ref=lmtplus
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: waseem khan
> INET: waseem.khan_at_lycos.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).
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Sony kristanto
  INET: Sony_at_polyfincanggih.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).