On Thu, Jun 3, 2010 at 7:16 PM, Mark Kirkwood
<mark.kirkwood@catalyst.net.nz> wrote:
> Maybe I gave this guy a bad title - is it a concern that the 'width'
> estimate is so far off for xml datatypes (because of no = op)? It seemed to
> me that this could result in some bad plan choices (e.g in subqueries etc).
It's possible. I don't really see a reason not to add an = operator
for XML - does anyone else?
It would need to be done by updating src/include/catalog/pg_*.h,
rather than via SQL, of course.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
