Bruce Momjian wrote:
> Jan Wieck wrote:
>> Manfred Koizar wrote:
>> > On Mon, 03 May 2004 13:38:45 -0400, Ericson Smith <eric@did-it.com>
>> > wrote:
>> >>didit=# select *,xmin from settings where xmin > '187167023'::xid limit 5;
>> >>ERROR: operator does not exist: xid > xid
>> >
>> > There might be better solutions, but when I ran into the same problem,
>> > the age(xid) function helped at lot.
>>
>> Slony contains an xxid data type that follows exactly the xid semantics.
>> It comes with a full operator class so that you can even put indexes on
>> xxid type columns. Shouldn't be too hard to define those operators for
>> the builtin xid type instead.
>
> Should we just get that into our CVS so Slony doesn't have to distribute
> its own?
>
It has to anyway, at least as long as it is supposed to be a version
upgrade aid that supports replicating from 7.3.x or 7.4.x to a newer
version so that the upgrade downtime reduces to a few seconds for a
master->slave switchover.
Jan
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