RE: SQL and case structure

From: Robson, Peter <pgro_at_bgs.ac.uk>
Date: Tue, 08 Oct 2002 06:39:01 -0800
Message-ID: <F001.004E32E1.20021008063901@fatcity.com>

Doug Burns wrote a very informative paper on Decode, presented at an earlier UK-OUG meeting. Its available from his web site:

http://doug.burns.tripod.com/decode.html

And the answer to the question posed below is 'yes'.

peter
edinburgh

> -----Original Message-----
> From: Droogendyk, Harry [mailto:Harry.Droogendyk_at_CIBC.com]
> Sent: 07 October 2002 23:59
> To: Multiple recipients of list ORACLE-L
> Subject: RE: SQL and case structure
>
>
> Jesse:
>
> Can I also use the value of another column rather than a
> literal like my
> example coded?
>
> e.g.
>
> select acct_no,
> decode(substr(acct_no,16,1),'1',field1
> '2',field2
> field3 ) as descr
> from star.kills
> ;
>
>
> TIA
>
>
> -----Original Message-----
> Sent: Monday, October 07, 2002 5:28 PM
> To: Multiple recipients of list ORACLE-L
>
>
> "CASE" in PL/SQL serves a slightly different function, but
> DECODE should do
> the trick. Try:
>
> select acct_no,
> DECODE(substr(acct_no,16,1),
> '1','one',
> '2','two',
> 'other') as DESCR
> from star.kills;
>
> I also changed "desc" to "descr", since "desc" is a reserved word.
>
> HTH! GL! :)
>
> Rich Jesse System/Database Administrator
> Rich.Jesse_at_qtiworld.com Quad/Tech International,
> Sussex, WI USA
>
> > -----Original Message-----
> > From: Droogendyk, Harry [mailto:Harry.Droogendyk_at_CIBC.com]
> > Sent: Monday, October 07, 2002 3:39 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: SQL and case structure
> >
> >
> > Listers:
> >
> > I've used SAS's version of SQL and it allows the coding of
> > conditional logic
> > in the SELECT statement:
> >
> > proc sql;
> > select acct_no,
> > case substr(acct_no,16,1)
> > when '1' then 'one'
> > when '2' then 'two'
> > else 'other'
> > end as desc
> > from star.kills;
> > quit;
> >
> > The same syntax does not work in SQL*Plus for Oracle 8. Can
> > someone point
> > me to the correct syntax?
> >
> > Secondly, any URLs for this kind of information would be most
> > appreciated.
> >
> > Regards,
> > Harry
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Jesse, Rich
> INET: Rich.Jesse_at_qtiworld.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Robson, Peter
  INET: pgro_at_bgs.ac.uk

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Received on Tue Oct 08 2002 - 09:39:01 CDT