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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Shigeru Hanada <shigeru.hanada@gmail.com>
Cc: Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: inherit support for foreign tables
Date: Thu, 30 Jan 2014 11:04:51 -0500
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Shigeru Hanada <shigeru.hanada@gmail.com> writes:
> At the moment we don't use attstorage for foreign tables, so allowing
> SET STORAGE against foreign tables never introduce visible change
> except \d+ output of foreign tables.  But IMO such operation should
> not allowed because users would be confused.  So I changed
> ATExecSetStorage() to skip on foreign tables.

I think this is totally misguided.  Who's to say that some weird FDW
might not pay attention to attstorage?  I could imagine a file-based
FDW using that to decide whether to compress columns, for instance.
Admittedly, the chances of that aren't large, but it's pretty hard
to argue that going out of our way to prevent it is a useful activity.

			regards, tom lane


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