watfordkcf opened a new pull request, #42153: URL: https://github.com/apache/spark/pull/42153
Add documentation covering unexpected behavior of concat and concat_ws with respect to null values. ### What changes were proposed in this pull request? Adds additional documentation to `concat` and `concat_ws`. ### Why are the changes needed? The behavior of `concat` and `concat_ws` were unexpected w.r.t. null values and the documentation did not help make their behavior clear. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? -- 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]
