Re: [GENERAL] 7.4Beta
От | Stephan Szabo |
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Тема | Re: [GENERAL] 7.4Beta |
Дата | |
Msg-id | 20030815073521.B19338-100000@megazone.bigpanda.com обсуждение исходный текст |
Ответ на | Re: [GENERAL] 7.4Beta (Andreas Pflug <pgadmin@pse-consulting.de>) |
Ответы |
Re: [GENERAL] 7.4Beta
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Список | pgsql-hackers |
On Fri, 15 Aug 2003, Andreas Pflug wrote: > Stephan Szabo wrote: > > >That really needs to be rewritten to do a single check over the table > >rather than running the constraint for every row. I keep meaning to get > >around to it and never actually do. :( I'm not sure that in practice > >you'll get a better plan at restore time depending on what the default > >statistics give you. > > > This is clearly a case for a statement level trigger, as soon as > affected rows can be identified. Well, I think single inserts might be more expensive (because the query is more involved for the table joining case) using a statement level trigger, so we'd probably want to profile the cases.
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