feat(`mango`): add `keys_examined` for `execution_stats` (part 1)#4554

pgj wants to merge 1 commit intoapache:mainapache/couchdb:mainfrom

pgj:feat/mango-execution-stats-keys-examined-part-1pgj/couchdb:feat/mango-execution-stats-keys-examined-part-1Copy head branch name to clipboard