Re: index keeps on growing

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От Brian McCane
Тема Re: index keeps on growing
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Msg-id 20020619093539.M29552-100000@fw.mccons.net
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Ответ на Re: index keeps on growing  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: index keeps on growing  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-admin
Okay, thanks for that information.  I will have to dig through my
pgsql-admin archive here and find the code for setting the primary key
flag. Unless of course someone would like to offer me the information
*HINT* :).  After I get the information, I will make the appropriate
changes to my script and place them up on the ftp server.

- brian


On Wed, 19 Jun 2002, Tom Lane wrote:

>
> Brian McCane <bmccane@mccons.net> writes:
> > The perl script will allow you to rebuild your indexes (indices?) without
> > having to kick out all of your users.  It reclaims all of the "holes" in
> > the index files.  It does NOT preserve the "primary key" setting for an
> > index, because as far as I can tell this doesn't actually make any
> > difference, primary keys are just an UNIQUE index.
>
> The primary-key marker does actually make a difference in just one case
> (AFAIK): when you create a foreign key reference from another table,
> the primary key serves to identify the default columns to reference.
> If you drop the marker then subsequent attempts to create referencing
> columns will have to explicitly identify the referenced columns.
>
>             regards, tom lane
>
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Wm. Brian McCane                    | Life is full of doors that won't open
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