Rich-T-kid commented on PR #25576: URL: https://github.com/apache/datafusion/pull/25576#issuecomment-5768644967
> In that case, it's probably never safe or even helpful to read it in as Exact, should we always read it in as Inexact? yes thats what the code currently does. in `datafusion/datasource-parquet/src/metadata.rs` if there is more than one row-group the column ndv is `Inexact` due to the reason we went over above. in the case where theres only one row-group then the `NDV` is actually exactly correct. -- 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]
