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https://issues.apache.org/jira/browse/SPARK-32042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17141327#comment-17141327
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Apache Spark commented on SPARK-32042:
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User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/28883
> Support UTF8String literals
> ---------------------------
>
> Key: SPARK-32042
> URL: https://issues.apache.org/jira/browse/SPARK-32042
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Yuming Wang
> Priority: Major
>
> How to reproduce this issue:
> {code:scala}
> val min = spark.sql("select min(concat('a', id)) from
> range(10)").queryExecution.executedPlan.executeCollect().head
> assert(Literal(min.get(0, StringType)) === Literal("a0"))
> {code}
> {noformat}
> Unsupported literal type class org.apache.spark.unsafe.types.UTF8String a0
> java.lang.RuntimeException: Unsupported literal type class
> org.apache.spark.unsafe.types.UTF8String a0
> at
> org.apache.spark.sql.catalyst.expressions.Literal$.apply(literals.scala:89)
> {noformat}
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