Re: numbering plan nodes
От | Simon Riggs |
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Тема | Re: numbering plan nodes |
Дата | |
Msg-id | CANP8+j+5cCpZk68QLSUJUemcuj1WPv12RmmFgBca-aCadW22Kw@mail.gmail.com обсуждение исходный текст |
Ответ на | numbering plan nodes (Robert Haas <robertmhaas@gmail.com>) |
Ответы |
Re: numbering plan nodes
|
Список | pgsql-hackers |
On 17 September 2015 at 13:14, Robert Haas <robertmhaas@gmail.com> wrote:
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My main concern with this design is how future-proof it is.
Passing array offsets sounds brittle to me.
It would screw up any attempts to post-process the plans. Later enhancements seem certain to break that scheme.
It also assumes that all actors have access to a single memory structure that describes everything.
Hopefully we are working on a parallel query system that will work intranode as well as across nodes, so access to memory should not be assumed.
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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