I've been looking at improving the planner so that it can handle things
like backwards-order mergejoins, and I'm starting to realize that the
old assumption that mergejoinable operators had only one associated sort
ordering is wired into even more places than I thought. In particular,
the
On Thu, Jan 11, 2007 at 04:03:55PM -0500, Tom Lane wrote:
I've been looking at improving the planner so that it can handle things
like backwards-order mergejoins, and I'm starting to realize that the
old assumption that mergejoinable operators had only one associated sort
ordering is wired
