Re: Check constraints on non-immutable keys

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От Tom Lane
Тема Re: Check constraints on non-immutable keys
Дата
Msg-id 20052.1277941316@sss.pgh.pa.us
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Ответ на Re: Check constraints on non-immutable keys  (Robert Haas <robertmhaas@gmail.com>)
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Robert Haas <robertmhaas@gmail.com> writes:
> On Wed, Jun 30, 2010 at 6:57 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> The detailed definition is amazingly laborious and yet limited, though,
>> as it basically doesn't address the problem except for that specific
>> case and close relatives.

> Well, solving the problem in general is equivalent to the halting problem, so...

So is proving determinism.  They had the sense to *not* try to define
what that means.
        regards, tom lane


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