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https://issues.apache.org/jira/browse/SPARK-52461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihailo Aleksic updated SPARK-52461:
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Description:
When coercing an expression from DecimalType to DecimalType, remove the inner
Cast if it is not user-specified one and if the outer DecimalType is wider than
inner (precision and scale are greater) - or in other words, if it is
redundant. Do that only in case SQLConf.COLLAPSE_INNER_CAST_TO_DECIMAL value is
true.
This is needed to make single-pass and fixed-point implementations compatible.
was:When coercing an expression from DecimalType to DecimalType, remove the
inner Cast if it is not user-specified one and if the outer DecimalType is
wider than inner (precision and scale are greater) - or in other words, if it
is redundant. Do that only in case SQLConf.COLLAPSE_INNER_CAST_TO_DECIMAL value
is true.
> Collapse inner Cast from DecimalType to DecimalType
> ---------------------------------------------------
>
> Key: SPARK-52461
> URL: https://issues.apache.org/jira/browse/SPARK-52461
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Mihailo Aleksic
> Priority: Major
>
> When coercing an expression from DecimalType to DecimalType, remove the inner
> Cast if it is not user-specified one and if the outer DecimalType is wider
> than inner (precision and scale are greater) - or in other words, if it is
> redundant. Do that only in case SQLConf.COLLAPSE_INNER_CAST_TO_DECIMAL value
> is true.
> This is needed to make single-pass and fixed-point implementations compatible.
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