niebayes commented on issue #14770: URL: https://github.com/apache/datafusion/issues/14770#issuecomment-2668069671
A possible implementation is to design a bunch of fill UDFs, such as fill_value, fill_prev, fill_linear etc, which act on a column expression in the select list. The users can then use `SELECT fill_value(a, 1.0), fill_prev(b) FROM table` to fill selected columns with available fill strategies. Or use `DataFrame::new(..).fill(vec![(Column, FillStrategy), (Column, FillStrategy)])` to apply filling on specified columns of a data frame. -- 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: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
