From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | "Stephen R(dot) van den Berg" <srb(at)cuci(dot)nl> |
Cc: | Roberto Mello <roberto(dot)mello(at)gmail(dot)com>, Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: pg_rawdump |
Date: | 2010-10-20 14:28:49 |
Message-ID: | 26073.1287584929@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
"Stephen R. van den Berg" <srb(at)cuci(dot)nl> writes:
> It's just that matching table and file, and subsequently figuring out
> some missing columns which may have been added/removed later,
> can be rather timeconsuming and could be made a lot easier (not necessarily
> perfect) if that information would have been present in the first page of
> a file.
So you've already moved the goalposts from what was claimed in your
prior message. If the data is not maintained (with 100% reliability)
during ALTER TABLE, how are you going to do something like "figure out
missing columns"?
I can see the potential usefulness of a self-documenting table storage
format, but this proposal isn't that; it's just an unreliable kluge.
regards, tom lane
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