Re: Good name for new lock type for VACUUM?

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От Tom Lane
Тема Re: Good name for new lock type for VACUUM?
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Msg-id 7776.993311502@sss.pgh.pa.us
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Ответ на RE: Good name for new lock type for VACUUM?  ("Hiroshi Inoue" <Inoue@tpf.co.jp>)
Ответы RE: Good name for new lock type for VACUUM?  ("Hiroshi Inoue" <Inoue@tpf.co.jp>)
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"Hiroshi Inoue" <Inoue@tpf.co.jp> writes:
> Isn't it a better idea to have a separate 'SELF EXCLUSIVE' lock
> which conflicts with only itself ?

*Only* itself?  What would that be useful for?  Not for locking
tables, anyway --- if you don't conflict with AccessExclusiveLock
then it's possible for someone to drop the table while you're
working on it.
        regards, tom lane

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