alpass163 opened a new pull request, #16761: URL: https://github.com/apache/iotdb/pull/16761
Adds several optimization rules for INTERSECT and EXCEPT set operations. MergeIntersect / MergeExcept: Flattens nested set operations into a single node. EvaluateEmptyIntersect: If any input branch of an INTERSECT is empty, the entire operation result is empty. RemoveEmptyExceptBranches: Optimizes EXCEPT by removing empty subtrahend (right-side) branches. If the minuend (first) branch is empty, the result is empty. PruneIntersectSourceColumns / PruneExceptSourceColumns: Pushes column pruning down to the source branches of the set operation. -- 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]
