From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Jurgen Defurne <defurnj(at)glo(dot)be> |
Cc: | postgreSQL general mailing list <pgsql-general(at)postgreSQL(dot)org> |
Subject: | Re: Auto-uppercase inserted column |
Date: | 2000-05-20 11:26:53 |
Message-ID: | 200005201126.HAA15302@candle.pha.pa.us |
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Lists: | pgsql-general |
> Bruce Momjian wrote:
>
> > Is there a way to automatically uppercase a column upon insert or
> > update?
> >
> > I don't think rules can do that because of the problem of recursion.
> > The only way I think it can be done is using triggers. Is that correct?
> >
>
> Since triggers are available in postgreSQL, that should be the way, yes.
> You have to have access to the NEW values in your trigger, and then you
> should say something like
> NEW.field := upper(NEW.field) ;
>
> In older database systems this would be done in the entry system, but
> then you have a coupling between your application and the database.
Thanks. I was just seeking confirmation for my book. I expected
triggers where the only way.
--
Bruce Momjian | http://www.op.net/~candle
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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