Currently we maintain a bool _prefixExclusive and a vector of bools _suffixInclusive. What we actually need to know is whether there is an exclusive field, and if so, what is the index of the first exclusive field. This can be tracked with a single int. It's a very small change, but it allows us to simplify our checks in IndexEntryComparison::makeKeyStringFromSeekPointForSeek and leads to a modest but non-trivial speed-up in seek-heavy workloads when the index fits in memory.