Re: Variable length varlena headers redux

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От
Bruce Momjian
Тема
Re: Variable length varlena headers redux
Дата
Msg-id
200702131752.l1DHqMa26770@momjian.us
Ответ на
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Дерево обсуждения
Variable length varlena headers redux Gregory Stark <gsstark@mit.edu>
Re: Variable length varlena headers redux Peter Eisentraut <peter_e@gmx.net>
Re: Variable length varlena headers redux elein <elein@varlena.com>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Magnus Hagander <magnus@hagander.net>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Magnus Hagander <magnus@hagander.net>
Re: Variable length varlena headers redux Gregory Stark <stark@enterprisedb.com>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Gregory Stark <gsstark@mit.edu>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Greg Stark <gsstark@mit.edu>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Gregory Stark <stark@enterprisedb.com>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Gregory Stark <stark@enterprisedb.com>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Gregory Stark <stark@enterprisedb.com>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux elein <elein@varlena.com>
ERROR: failed to build any 8-way joins Mario Weilguni <mweilguni@sime.com>
Re: ERROR: failed to build any 8-way joins Alvaro Herrera <alvherre@commandprompt.com>
Re: ERROR: failed to build any 8-way joins Mario Weilguni <mweilguni@sime.com>
Re: ERROR: failed to build any 8-way joins Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux Heikki Linnakangas <heikki@enterprisedb.com>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Heikki Linnakangas <heikki@enterprisedb.com>
Re: Variable length varlena headers redux Bruce Momjian <bruce@momjian.us>
Re: Variable length varlena headers redux Tom Lane <tgl@sss.pgh.pa.us>
Re: Variable length varlena headers redux mark@mark.mielke.cc
Re: Variable length varlena headers redux Gregory Stark <stark@enterprisedb.com>
Tom Lane wrote:
> > We detect cases where the typmod guarantees either a fixed size or a maximum
> > size < 256 bytes.
> 
> After last week I would veto this option anyway: it fails unless we
> always know typmod exactly, and I'm here to tell you we don't.

If we can pull this off, it handles short values stored in TEXT fields
too, which is a big win over the typmod idea I had.

--  Bruce Momjian            http://momjian.us EnterpriseDB                               http://www.enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +

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