Re: [PATCHES] 8.2 features?

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От Joe Conway
Тема Re: [PATCHES] 8.2 features?
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Msg-id 44C0457B.1010303@joeconway.com
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Ответ на Re: [PATCHES] 8.2 features?  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> No, I guess I confused you by talking about the executor representation
> at the same time.  This is really unrelated to the executor.  The join
> tree I'm thinking of here is the data structure that dangles off
> Query.jointree --- it's a representation of the query's FROM clause,
> and (at present) can contain RangeTblRef, FromExpr, and JoinExpr nodes.
> See the last hundred or so lines of primnodes.h for some details.
> The jointree is used by the planner to compute the plan node tree that
> the executor will run, but it's not the same thing.

Ah, that helps. Thanks for the explanation. I'll start digging in again...

Thanks,

Joe


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