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https://issues.apache.org/jira/browse/SPARK-60718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-60718:
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Labels: pull-request-available (was: )
> Check whether an expression accepts an indeterminate collation before typing
> its children
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-60718
> URL: https://issues.apache.org/jira/browse/SPARK-60718
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Gengliang Wang
> Priority: Major
> Labels: pull-request-available
>
> CollationTypeCoercion checks every expression it visits for an input with
> indeterminate collation. The check computes the data type of every child
> first, and only then asks whether the expression accepts such an input.
> Almost every expression does, so the child types are thrown away.
> For the WithField and DropField operations of UpdateFields, asking for the
> data type throws an internal error, which the check catches and discards. So
> analyzing a plan that updates struct fields builds and discards one
> exception, with its stack trace, for each such operation every time the check
> visits the UpdateFields.
> Check the expression first, and compute the child types only when the
> expression does not accept an indeterminate collation. The verdict is
> unchanged for every expression.
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