Re: oid's and primary keys on insert

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От Andrew Sullivan
Тема Re: oid's and primary keys on insert
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Msg-id 20020812102216.D17166@mail.libertyrms.com
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Ответ на Re: oid's and primary keys on insert  (Joe Conway <mail@joeconway.com>)
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On Fri, Aug 09, 2002 at 08:23:54PM -0700, Joe Conway wrote:
> I had the exact same experience. Having a 2 column primary key on every
> table (and hence for every foreign key as well) gets unmanageable pretty
> quickly.

You could write a trigger which populates the primary key as a
combination of site_id and trans_id.  Then you still get the
advantage of a simple sequence plus a site id, without needing a
two-column primary key.  Of course, then you pay the price of a
trigger every time you insert.

A

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