Re: Check constraints on non-immutable keys

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От Tom Lane
Тема Re: Check constraints on non-immutable keys
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Msg-id 10358.1277910128@sss.pgh.pa.us
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Ответ на Re: Check constraints on non-immutable keys  (Magnus Hagander <magnus@hagander.net>)
Ответы Re: Check constraints on non-immutable keys  (Robert Haas <robertmhaas@gmail.com>)
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Magnus Hagander <magnus@hagander.net> writes:
> On Wed, Jun 30, 2010 at 16:38, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> The example seems to me to be in the category of "so don't do that"
>> rather than something that we need to save users from. �Yes, it's

> In that case, should we at least throw a warning?

I don't see a reason to do that.  If we could distinguish actually
problematic cases from safe cases, it would be helpful, but we can't.

Moreover, throwing a warning would encourage people to do actively
*unsafe* things to suppress the warning --- like marking functions
as immutable when they really aren't.
        regards, tom lane


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