Re: [HACKERS] Rule plan size for views?

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От jwieck@debis.com (Jan Wieck)
Тема Re: [HACKERS] Rule plan size for views?
Дата
Msg-id m0y9QAo-000BFRC@orion.SAPserv.Hamburg.dsh.de
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Ответ на Re: [HACKERS] Rule plan size for views?  (darrenk@insightdist.com (Darren King))
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>
> >
> > What is the rule size for views?
> >
> > This seems to have changed in this beta; I have a view that worked in a
> > previous beta but fails to create.
> > "ERROR: DefineQueryRewrite: rule plan string too big."
> >
> > I have about 33 column headings with a join of 5 tables.
> >
> > I have the latest cvsup tree as of a few minutes ago.
> > Linux 2.0.30
> > pgcc compiler
>
> The rule plan is stored as a tuple, hence for this release that limit
> is a little under 8k.
>
> For 6.4, you will be able to use a bigger block size, therefore have
> bigger tuples and this should then work again.
>
> Sounds like the plan internally grew (possible w/subselect stuff?!?) and
> has gone over that 8k limit.

    I think it must be due to the cleanups in the node-print and
    read funcs. They now output/read ALL fields in the nodes.

>
> I know it's little consolation, but as soon as I can get the variable
> block size working (actually only breaks in the create_triggers regression
> test when sorting to disk), I could post it as a patch for 6.3 as well as
> put it into the 6.4 tree.
>
> darrenk
>
>


Jan


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