Re: Maximum number of sequences that can be created
От | Robert Klemme |
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Тема | Re: Maximum number of sequences that can be created |
Дата | |
Msg-id | CAM9pMnOCKEEKbvhtLoTym9cY9xspr3S12V6bWbcsQxtHsyzMGw@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Maximum number of sequences that can be created (Віталій Тимчишин <tivv00@gmail.com>) |
Ответы |
Re: Maximum number of sequences that can be created
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Список | pgsql-performance |
On Sun, May 13, 2012 at 10:12 AM, Віталій Тимчишин <tivv00@gmail.com> wrote: > 2012/5/11 Robert Klemme <shortcutter@googlemail.com> >> On the contrary: what would be the /advantage/ of being able to create >> millions of sequences? What's the use case? > > We are using sequences as statistics counters - they produce almost no > performance impact and we can tolerate it's non-transactional nature. I can > imaging someone who wants to have a sequence per user or other relation > row. I can almost see the point. But my natural choice in that case would be a table with two columns. Would that actually be so much less efficient? Of course you'd have fully transactional behavior and thus locking. Kind regards robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/
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