Re: EXPLAIN WITH

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От Stephen Frost
Тема Re: EXPLAIN WITH
Дата
Msg-id 20090405174611.GA8123@tamriel.snowman.net
обсуждение исходный текст
Ответ на Re: EXPLAIN WITH  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: EXPLAIN WITH  (Tom Lane <tgl@sss.pgh.pa.us>)
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* Tom Lane (tgl@sss.pgh.pa.us) wrote:
> This isn't terribly compelling in this example, of course, but
> it gets a lot more important when you've got a dozen of 'em.

Exactly.

> >From the perspective of the backend this is a simple and cheap change.

Awesome.

> I think the objection that is most likely to be raised is that it would
> confuse or break programs that analyze EXPLAIN output in any degree of
> detail.  Of course such programs are going to need some work for 8.4
> already.

I definitely feel that it would be best to make this change now, when
we're introducing CTE as a type that anything doing EXPLAIN would need
to deal with at some level anyway than to add it later (eg: 8.5).  I'm
definitely a +1 on this.
Thanks!
    Stephen

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