Re: Lock levels for ALTER TABLE

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От Tom Lane
Тема Re: Lock levels for ALTER TABLE
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Msg-id 23560.1357793774@sss.pgh.pa.us
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Ответ на Re: Lock levels for ALTER TABLE  (Bruce Momjian <bruce@momjian.us>)
Ответы Re: Lock levels for ALTER TABLE  (Tom Lane <tgl@sss.pgh.pa.us>)
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Bruce Momjian <bruce@momjian.us> writes:
> On Wed, Jan  9, 2013 at 10:27:54PM -0500, Tom Lane wrote:
>> Bruce Momjian <bruce@momjian.us> writes:
>>> EnterpriseDB reports that our documentation states that ALTER TABLE
>>> takes SHARE UPDATE EXCLUSIVE and ACCESS EXCLUSIVE lock modes.

>> Where do they see that?  We certainly reverted all of the documentation
>> that Simon changed in the original commit for that failed feature.
>> Something might have slipped through the cracks though.

> In mvcc.sgml, I see:
> -->      some forms of <command>ALTER TABLE</command>.

A bit of "git blame" later, the culprit is commit
7212c77d0cabcc468fec0b9cd7f2413b64b77050, which I apparently didn't
recognize as part of what needed to be reverted in
a195e3c34f1eeb6a607c342121edf48e49067ea9.  Will fix.
        regards, tom lane



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