AW: Script for reversing a string?

From: Haunschmidt Andreas VASL/FAS <Andreas.Haunschmidt_at_voest.co.at>
Date: Mon, 12 Mar 2001 15:38:08 -0800
Message-ID: <F001.002CA4C3.20010312153025@fatcity.com>

Hi!

Here's the function:

-------------------------------------- snip
-----------------------------------------

create or replace
function reverse_string(iText in varchar2) return varchar2 is
  oText varchar2(2000);
begin
  for i in 1 .. least(2000,length(iText))   loop
    oText := oText || substr(iText,-i,1);   end loop;
  return oText;
end;
/

snip
- Test: select reverse_string('Hope this helps') from dual;

Andreas

> ----------
> Von: Miller, Jay[SMTP:JayMiller_at_TDWaterhouse.com]
> Gesendet: Montag, 12. März 2001 22:17
> An: Multiple recipients of list ORACLE-L
> Betreff: Script for reversing a string?
>
> Before I reinvent the wheel, I was wondering if anyone has written a
> function that will reverse a string?
> Our auditors are requiring that Oracle passwords not contain the reverse
> of
> the user name and I was about to start writing this function when I
> decided
> to check here first.
>
> Thanks!
>
> Jay Miller
>
>
>
> -----Original Message-----
> Sent: Friday, March 09, 2001 3:26 PM
> To: Multiple recipients of list ORACLE-L
>
>
> It hasn't caused me any problems - have only tried it on this test server
> so
> far, and on my workstation.
>
> The workstation has Oracle 7.3. and 8.0.4 on it they have been running for
> over a year.
>
> I wouldn't try this on a production system! These are test databases
> only.
>
> I am just curious why the files are so fragmented.
>
> Regards,
> Patrice Boivin
> Systems Analyst (Oracle Certified DBA)
>
> Systems Admin & Operations | Admin. et Exploit. des systèmes
> Technology Services | Services technologiques
> Informatics Branch | Direction de l'informatique
> Maritimes Region, DFO | Région des Maritimes, MPO
>
> E-Mail: boivinp_at_mar.dfo-mpo.gc.ca <mailto:boivinp_at_mar.dfo-mpo.gc.ca>
>
>
> -----Original Message-----
> From: Smith, Ron L. [SMTP:rlsmith_at_kmg.com]
> Sent: Friday, March 09, 2001 3:36 PM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: Does NT write to random locations on disk?
>
> I wouldn't think you would want to reorg an Oracle tablespace with
> an NT
> defrag utility. You would corrupt the data.
> Ron Smith
> Database Administration
> rlsmith_at_kmg.com
>
>
> -----Original Message-----
> Sent: Friday, March 09, 2001 1:01 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Using a little utility called contig I noticed that the Oracle 8.1.6
> datafiles on my test NT server are quite fragmented, an average of
> 177
> fragments per file, 118 fragments for the OEM repository datafile.
> The poor
> utility couldn't do anything with the database files, they are too
> large
> perhaps.
>
> These were created on an empty server, 8i release 2 went on it after
> a
> defrag, then the OEM. This is on a hard disk with 1.2G of free
> space, none
> of the datafiles come close to that.
>
> Why so many fragments? Oracle created those files in one pass, does
> NT
> write randomly to disk or what?
>
> Won't this have an impact on my NT database's performance?
>
> Oracle says tablespace fragmentation is not a big deal, but
> fragmentation at
> the OS level matters. Supposedly that's why NT and WndowsXX came
> with
> defragmentation tools.
>
> ???
>
> Is there a registry setting somewhere to tell NT to write
> contiguously to
> disk?
>
> TIA
> Patrice Boivin
> Systems Analyst (Oracle Certified DBA)
>
> Systems Admin & Operations | Admin. et Exploit. des systèmes
> Technology Services | Services technologiques
> Informatics Branch | Direction de l'informatique
> Maritimes Region, DFO | Région des Maritimes, MPO
>
> E-Mail: boivinp_at_mar.dfo-mpo.gc.ca <mailto:boivinp_at_mar.dfo-mpo.gc.ca>
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Boivin, Patrice J
> INET: BoivinP_at_mar.dfo-mpo.gc.ca
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Smith, Ron L.
> INET: rlsmith_at_kmg.com
>
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> --
> Author: Boivin, Patrice J
> INET: BoivinP_at_mar.dfo-mpo.gc.ca
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
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> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Miller, Jay
> INET: JayMiller_at_TDWaterhouse.com
>
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> San Diego, California -- Public Internet access / Mailing Lists
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--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Haunschmidt Andreas VASL/FAS
  INET: Andreas.Haunschmidt_at_voest.co.at

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Received on Mon Mar 12 2001 - 17:38:08 CST