Re: Fixing a too long column value in a before insert trigger or rule

From: Douglas McNaught <doug(at)mcnaught(dot)org>
To: Csaba Nagy <nagy(at)ecircle-ag(dot)com>
Cc: Postgres general mailing list <pgsql-general(at)postgresql(dot)org>
Subject: Re: Fixing a too long column value in a before insert trigger or rule
Date: 2005-05-11 12:58:44
Message-ID: m28y2l9awr.fsf@Douglas-McNaughts-Powerbook.local
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Csaba Nagy <nagy(at)ecircle-ag(dot)com> writes:

> Hi all,
>
> We have a situation where a varchar column was limited to a too small
> maximum length in the design phase... shit happens, we will fix our db
> schema in our next database downtime or software version deployment,
> whichever comes first (we are using 7.4 and on the fly column type
> change is only from 8.0 on I guess).

You can do surgery on the system catalogs in 7.4 if you need to change
the length of a varchar. 8.0 just put a nice ALTER TABLE interface on
top of it. Read the system catalog docs and definitely try it on a
test database first. :)

-Doug

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