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https://issues.apache.org/jira/browse/SPARK-43322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724304#comment-17724304
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Sean R. Owen commented on SPARK-43322:
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Can you add examples?
> Spark SQL docs for explode_outer and posexplode_outer omit behavior for
> null/empty
> ----------------------------------------------------------------------------------
>
> Key: SPARK-43322
> URL: https://issues.apache.org/jira/browse/SPARK-43322
> Project: Spark
> Issue Type: Documentation
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Robert Juchnicki
> Priority: Minor
>
> The Spark SQL documentation for
> [explode_outer|https://spark.apache.org/docs/latest/api/sql/index.html#explode_outer]
> and
> [posexplode_outer|[https://spark.apache.org/docs/latest/api/sql/index.html#posexplode_outer|https://spark.apache.org/docs/latest/api/sql/index.html#posexplode_outer)]]
> omits mentioning that null or empty arrays produce nulls. The descriptions
> do not appear to be written down in a doc file and are likely pulled from the
> `ExpressionDescription` tags for the `Explode` and `PosExplode` generators
> when the `GeneratorOuter` wrapper is used.
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