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https://issues.apache.org/jira/browse/SPARK-23933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16454393#comment-16454393
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Alex Wajda commented on SPARK-23933:
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Oh, now I got it, thanks. I overlooked the case when the keys could be
themselves arrays. Looks like another function name is needed, e.g. to_map or
zip_map.
> High-order function: map(array<K>, array<V>) → map<K,V>
> -------------------------------------------------------
>
> Key: SPARK-23933
> URL: https://issues.apache.org/jira/browse/SPARK-23933
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Priority: Major
>
> Ref: https://prestodb.io/docs/current/functions/map.html
> Returns a map created using the given key/value arrays.
> {noformat}
> SELECT map(ARRAY[1,3], ARRAY[2,4]); -- {1 -> 2, 3 -> 4}
> {noformat}
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