Re: Gaps in PK sequence numbers

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От Rich Shepard
Тема Re: Gaps in PK sequence numbers
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Msg-id d44076fc-fcd7-445c-da76-5d87c7d2dc4@appl-ecosys.com
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Ответ на Re: Gaps in PK sequence numbers  ("David G. Johnston" <david.g.johnston@gmail.com>)
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On Mon, 10 Jun 2024, David G. Johnston wrote:

> For efficiency the only thing used to determine the next value of a
> sequence is the stored value of the last sequence value issued. Where that
> value may have been used, in a table as a PK or some other purpose, does
> not enter into it. Using a sequence as a default does indeed become
> problematic if you don't use it exclusively. If you do use it exclusively
> usually you just set the last value to be the maximum needed and use it
> going forward. The numbers from deleted rows simply remain missing in the
> table.

David,

Thanks for the explanation. I had entered PKs without using the sequence.

Regards,

Rich



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