Simon Riggs <simon@2ndquadrant.com> writes:
> I was thinking that we would fill out the OpExpr with different
> opclasses for each plan, so each one sees a different story. (I was
> thinking there was a clauselist for each plan; if not, there could be.)
This is backwards: there isn't a plan yet. If there were, having
clauselist_selectivity return different answers depending on what index
the plan was thinking of using would still be wrong.
> [BTW how do you add new indexes to system tables? I want to add one to
> pg_inherits but not sure where to look.]
src/include/catalog/indexing.h
Offhand I think adding a new entry is all you have to do. You may also
want a syscache to go with it, which'll take a bit more work.
regards, tom lane
