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https://issues.apache.org/jira/browse/SPARK-23923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-23923.
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Resolution: Fixed
Assignee: Kazuaki Ishizaki
Fix Version/s: 2.4.0
> High-order function: cardinality(x) → bigint
> --------------------------------------------
>
> Key: SPARK-23923
> URL: https://issues.apache.org/jira/browse/SPARK-23923
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Assignee: Kazuaki Ishizaki
> Priority: Major
> Fix For: 2.4.0
>
>
> Ref: https://prestodb.io/docs/current/functions/array.html and
> https://prestodb.io/docs/current/functions/map.html.
> Returns the cardinality (size) of the array/map x.
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