emkornfield commented on PR #39153: URL: https://github.com/apache/arrow/pull/39153#issuecomment-1851390890
> Am I right that this can be used for faster checking of value presence for Expression == ? (like in bloom filters) This is one potential use. In general it can be used to reduce computation of predicates by precomputing on the dictionary, and each predicate becomes a simple lookup. for some predicates (like equality) that can rule out all data being present this can have a large impact -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
