ozankabak commented on PR #19609: URL: https://github.com/apache/datafusion/pull/19609#issuecomment-3727914980
As an example, when one implements a join on an ordered table with a "sliding window" condition, the `propagate_constraints` becomes instrumental in finding the upper (or lower) bounds to prune the join hash map. IMO [this blog post](https://synnada.medium.com/general-purpose-stream-joins-via-pruning-symmetric-hash-joins-94cc69a4847) explains the ideas well. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
