Re: Sorting a column
Date: Fri, 8 Aug 2008 16:02:47 +0200
"fitzjarrell_at_cox.net" <oratune_at_msn.com> schreef in bericht
On Aug 8, 1:58 am, "Shakespeare" <what..._at_xs4all.nl> wrote:
> "digory" <dig..._at_gmx.net> schreef in
> > Hi
> > I have a table T with two columns NAME (VARCHAR2) and POS (NUMBER). I
> > want to write an UPDATE query, which updates the column POS such that
> > its values correspond to the alphabetical order of NAME.
> > UPDATE
> > T t1
> > SET pos = (SELECT ROWID FROM T t2 WHERE t1.NAME = t2.NAME ORDER BY
> > NAME)
> > That does not work, because the WHERE clause returns a single row,
> > which will always have a ROWID of 1.
> > How do I do this? (It's possible with a PROCEDURE, of course, but I
> > want to avoid them.)
> ROWID? Don't you mean rownum?
> I don't think tables will ever have rows with the same rowid (except by
> Shakespeare- Hide quoted text -
> - Show quoted text -
Look again, it's the same table queried twice. The rowids WILL match up.
Right. OOPS ;-)
David Fitzjarrell Received on Fri Aug 08 2008 - 09:02:47 CDT