Re: [HACKERS] Sequences....

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От Clark Evans
Тема Re: [HACKERS] Sequences....
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Msg-id 36ED90BE.F904CF97@manhattanproject.com
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Ответ на Re: [HACKERS] Sequences....  (Ryan Bradetich <rbrad@hpb50023.boi.hp.com>)
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Ryan Bradetich wrote:
> > Back to my origional point .. I think we need another system table to map the
> > sequence oid to the table's oid.  I've noticed this done with the inheritance,
> > indexes, etc ... but I don't see a pg_sequence table.

Sounds good.

As long as a sequence can point to more than 
one table/column combination.

Or, I guess, you can have the relationship 1-1 for
the SERIAL type, but this should not prevent using
sequences across more than one table if you don't use SERIAL.
I often use a sequence for 3 or more tables in a system
so that I can use 'generic' functions on the tables
and produce reports without conficting primary keys..

:) Clark


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