avantgardnerio opened a new issue, #18028: URL: https://github.com/apache/datafusion/issues/18028
### Describe the bug Some analytical functions effect the effective window bounds by adding a lookahead (acausal) amount of rows. The current implementation of `LimitPushPastWindows` does not take this into account, does not grow the limit by the appropriate amount, and does not give them the input data necessary to compute the correct totals. ### To Reproduce Run a query like: ``` SELECT LEAD(empno) OVER (ORDER BY empno ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) FROM employees LIMIT 3 ``` with `datafusion.optimizer.enable_window_limits` enabled/disabled to observe different results. ### Expected behavior _No response_ ### Additional context _No response_ -- 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]
