> Note you should be looking at pg_am.amcanorder, not
> hardwiring knowledge of particular index types.
Ok.
Would it make sense to use
FormIndexDatum
to get the index value to be used by tuplesort?
I'm having trouble avoiding the call to _bt_mkscankey_nodata
to get the scanKeys... that relates to btree only, I can't find
the "general" function...