| From: | Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net> |
|---|---|
| To: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: newbie question |
| Date: | 2006-03-03 11:04:47 |
| Message-ID: | 20060303110447.GA7322@merkur.hilbert.loc |
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| Lists: | pgsql-sql |
On Fri, Mar 03, 2006 at 10:43:09AM +0100, ivan marchesini wrote:
> I have fastly created a table in a postgresql database..
> some columns where edited by hand (columns A, B, C), and some others
> (columns D, E, F) have been calculated as a result of mathematical
> equation (where the factors are the A, B, C columns)....
> now I simply need to change some values in the A, B, C columns and I
> would like to obtain the correct values in the D, E, F column...
> I know that this is a tipical problem of a spreadsheet but how can I
> solve it with a DBMS??
Use triggers or a view.
Karsten
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