Re: Subselect and limit/order?
От | Philip Warner |
---|---|
Тема | Re: Subselect and limit/order? |
Дата | |
Msg-id | 3.0.5.32.20000808162456.02832bf0@mail.rhyme.com.au обсуждение исходный текст |
Ответ на | Subselect and limit/order? (Philip Warner <pjw@rhyme.com.au>) |
Список | pgsql-sql |
At 11:46 7/08/00 -0400, Tom Lane wrote: > >I'd say mostly an executor problem, actually. Nobody's figured out >where the executor would need to be hacked to support tuple-limits >applied elsewhere than the top level of a select. Shouldn't the optimizer be able to get some benefit (in colun select expressions at least) by being able to do an implied 'limit 2'? ---------------------------------------------------------------- Philip Warner | __---_____ Albatross Consulting Pty. Ltd. |----/ - \ (A.C.N. 008 659 498) | /(@) ______---_ Tel: (+61) 0500 83 82 81 | _________ \ Fax: (+61) 0500 83 82 82 | ___________ | Http://www.rhyme.com.au | / \| | --________-- PGP key available upon request, | / and from pgp5.ai.mit.edu:11371 |/
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