Re: Sequence Access Method WIP

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От Heikki Linnakangas
Тема Re: Sequence Access Method WIP
Дата
Msg-id 528A09D3.1090201@vmware.com
обсуждение исходный текст
Ответ на Re: Sequence Access Method WIP  (Simon Riggs <simon@2ndQuadrant.com>)
Ответы Re: Sequence Access Method WIP  (Simon Riggs <simon@2ndQuadrant.com>)
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On 14.11.2013 22:10, Simon Riggs wrote:
> Includes test extension which allows sequences without gaps - "gapless".

I realize this is just for demonstration purposes, but it's worth noting 
that it doesn't actually guarantee that when you use the sequence to 
populate a column in the table, the column would not have gaps. 
Sequences are not transactional, so rollbacks will still produce gaps. 
The documentation is misleading on that point. Without a strong 
guarantee, it's a pretty useless extension.

- Heikki



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