andygrove opened a new issue, #112: URL: https://github.com/apache/datafusion-spark/issues/112
### Describe the bug `collect_list` with an `ORDER BY` inside the call fails with an internal error: ```sql SELECT collect_list(a ORDER BY a DESC) FROM (VALUES (3), (1), (2)) t(a); -- DataFusion error: Internal error: Assertion failed: values.len() == 1 (left: 2, right: 1): expects single batch. ``` Spark SQL has no `ORDER BY` inside `collect_list`, so there is no Spark result to match, but DataFusion's SQL accepts the syntax and an internal error is never the right answer. ### Expected behavior Either support the ordering (as DataFusion's `array_agg(a ORDER BY ...)` does), or reject it at planning time with a clear error. `collect_set` should be checked too. ### Additional context Found while documenting `collect_list` (#108). -- 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]
