buraksenn opened a new pull request, #23804: URL: https://github.com/apache/datafusion/pull/23804
## Which issue does this PR close? - Closes #23793. ## Rationale for this change Please check the issue details but main idea is concat does not guarantee lexicographical ordering ## What changes are included in this PR? Main change is simply deleting `preserves_lex_ordering` method from concat and let it fallback to default `false`. Also added relevant tests and adjusted comments ## Are these changes tested? Yes adjusted existing and added new tests ## Are there any user-facing changes? No api changes but there is a behavior change I think on optimization part for concat -- 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]
