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Re: FKs on temp tables: hard, or just omitted?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Martijn van Oosterhout <kleptog(at)svana(dot)org>
Cc: Sander Steffann <steffann(at)nederland(dot)net>, josh(at)agliodbs(dot)com,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: FKs on temp tables: hard, or just omitted?
Date: 2005-10-29 17:42:42
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Lists: pgsql-hackerspgsql-patches
Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> You solve it by allowing other backends to lock and examine your
> temporary tables. But AIUI temporary tables are not stored in shared
> memory so how do you get a consistant view of it?

> Not unsolvable, but very tricky.

Right, the problem isn't that "it can't be done", it's that "it can't be
done without giving up most of the performance advantages of temp tables".
Which seems like a bad tradeoff, at least to me ...

			regards, tom lane

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