> It might be slightly easier given the assumption that you only want to > scan leaf tuples. > > But there's an additional problem I didn't think of before. Currently > we optimize index scans by copying all relevant tuples to local memory > so we don't need to hold an index lock for an extended time or spend a > lot of time relocking and rechecking the index for changes. That > wouldn't be possible if we needed to get visibility info from the page > since we would need up-to-date information. > > > We should solve this issue in the same way, of how we proceed with the index only quals, in current index-only scans.
Gokul.
