From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
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To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Tomáš Pospíšil <killteck(at)seznam(dot)cz>, pgsql-hackers(at)postgresql(dot)org, chmelab(at)gmail(dot)com |
Subject: | Re: PROPOSAL of xmlvalidate |
Date: | 2010-11-29 19:15:43 |
Message-ID: | 4CF3FBDF.5010601@dunslane.net |
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Lists: | pgsql-hackers |
On 11/29/2010 01:30 PM, Tom Lane wrote:
> Andrew Dunstan<andrew(at)dunslane(dot)net> writes:
>> On 11/29/2010 12:36 PM, Robert Haas wrote:
>>> But that could equally well be stored in a user table rather than a
>>> system table.
>> Yeah. The trouble is you won't be able to use that reliably in a check
>> constraint, which I imagine is one of the principal intended purposes.
> Moving the same data to a system table doesn't fix that, unless you
> require that the system table be immutable ... which'd seem to make
> the idea useless.
>
>
Oh, yes, I agree.
cheers
andrew
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