Florian G. Pflug wrote:

> However, I just realized that doing this is much harder than I initially
> thought, because catalog access always happens with SnapshotNow, and
> e.g. "drop table" deletes datafiles at commit time, and not during vacuum.

Not to mention the likenesses of CLUSTER and TRUNCATE, which would need
to be taught how to keep the old datafiles for an additional week/hour.

What I don't understand is why people isn't working in improving

Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

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