On 11/29/2010 01:30 PM, Tom Lane wrote:
Andrew Dunstan<and...@dunslane.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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