From: | Holger Krug <hkrug(at)rationalizer(dot)com> |
---|---|
To: | Roman Gavrilov <romio(at)il(dot)aduva(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: select few fields as a single field |
Date: | 2002-01-10 11:09:10 |
Message-ID: | 20020110120910.A6669@dev12.rationalizer.com |
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Lists: | pgsql-general |
On Thu, Jan 10, 2002 at 12:58:18PM +0200, Roman Gavrilov wrote:
> Thank you for your response.
> Yes I know that i can make a function.
> Is there a way to do this transparently I want to treat this function as a
> field in the table.
No.
> The reason why i want to do that is because i have a class that has generic
> method to retrieve data.
> It receives list of field names and returns their values from the table.
> If I want to implement the function method i will have to modify the class
> method and will have to treat specially the
> retrieve fullname thing.
OK. But why not views ? That's exactly the use case where views should
be used in PostgreSQL. Using views you need not modify anything in
your class.
Alternative solution:
Change your class (if possible) to have the members name, version,
release and add a method getFullName() to the class. (I would never
do this but use views.)
--
Holger Krug
hkrug(at)rationalizer(dot)com
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