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https://issues.apache.org/jira/browse/SPARK-42269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17686888#comment-17686888
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Apache Spark commented on SPARK-42269:
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User 'xinrong-meng' has created a pull request for this issue:
https://github.com/apache/spark/pull/39964
> Support complex return types in DDL strings
> -------------------------------------------
>
> Key: SPARK-42269
> URL: https://issues.apache.org/jira/browse/SPARK-42269
> Project: Spark
> Issue Type: Sub-task
> Components: Connect, PySpark
> Affects Versions: 3.4.0
> Reporter: Xinrong Meng
> Priority: Major
>
> {code}
> # Spark Connect
> >>> spark.range(2).select(udf(lambda x: (x, x), "struct<x:integer,
> >>> y:integer>")("id"))
> ...
> AssertionError: returnType should be singular
> # vanilla PySpark
> >>> spark.range(2).select(udf(lambda x: (x, x), "struct<x:integer,
> >>> y:integer>")("id"))
> DataFrame[<lambda>(id): struct<x:int,y:int>]
> {code}
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