Re: [Bizgres-general] WAL bypass for INSERT, UPDATE and

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От Tom Lane
Тема Re: [Bizgres-general] WAL bypass for INSERT, UPDATE and
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Msg-id 15451.1135438349@sss.pgh.pa.us
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Ответ на Re: [Bizgres-general] WAL bypass for INSERT, UPDATE and  (Greg Stark <gsstark@mit.edu>)
Ответы Re: [Bizgres-general] WAL bypass for INSERT, UPDATE and  (Simon Riggs <simon@2ndquadrant.com>)
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Greg Stark <gsstark@mit.edu> writes:
> Martijn van Oosterhout <kleptog@svana.org> writes:
>> CREATE GLOBAL TEMP TABLE blah INHERITS myhugetable;

> I don't think you can have your temp table inherit from a real table.

Bear in mind also that this notion of a GLOBAL TEMP table has less than
nothing to do with what the standard says a GLOBAL TEMP table is.  You
can't argue for the idea by claiming it increases our standards
compliance, because it actually is moving even further away.  The spec
says that a temp table is a table that exists but starts empty in every
session, ie, data inserted by one session is not visible to any other
session.  The GLOBAL/LOCAL choice does not affect this, it actually just
governs visibility of the table within different modules (a concept we
don't have at all).

An ALTER TABLE SET LOGGED/UNLOGGED switch might have some merit, but
please don't muddy the waters by confusing this with temp-table status.
        regards, tom lane


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