On 09/06/10 15:22, Robert Haas wrote:
On Thu, Jun 3, 2010 at 7:16 PM, Mark Kirkwood
<mark.kirkw...@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.
Heh, sure should - I merely included the SQL stuff in case anyone else
wanted to reproduce what I was seeing!
Cheers
Mark
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