HyukjinKwon opened a new pull request #27788: [WIP][SPARK-31036][SQL] Use stringArgs in Expression.toString to respect hidden parameters URL: https://github.com/apache/spark/pull/27788 ### What changes were proposed in this pull request? This PR proposes to respect hidden parameters by using `stringArgs` in `Expression.toString `. By this, we can show the strings properly in some cases such as `NonSQLExpression`. ### Why are the changes needed? To respect "hidden" arguments in the string representation. ### Does this PR introduce any user-facing change? Yes, for example, on the top of https://github.com/apache/spark/pull/27657, ```scala val identify = udf((input: Seq[Int]) => input) spark.range(10).select(identify(array("id"))).show() ``` shows hidden parameter `useStringTypeWhenEmpty`. ``` +---------------------+ |UDF(array(id, false))| +---------------------+ | [0]| | [1]| ... ``` whereas: ```scala spark.range(10).select(array("id")).show() ``` ``` +---------+ |array(id)| +---------+ | [0]| | [1]| ... ``` ### How was this patch tested? By existing tests.
---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
