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From "Kazuaki Ishizaki (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-23933) High-order function: map(array<K>, array<V>) → map<K,V>
Date Wed, 25 Apr 2018 15:00:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-23933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16452404#comment-16452404
] 

Kazuaki Ishizaki commented on SPARK-23933:
------------------------------------------

Thank you for your comment.
The current map can take the even number of arguments (e.g. 2, 4, 6, 8 ...) due to a pair
of key and map.
We can determine {{map(1.0, '2', 3.0, '4') or map(1.0, '2')}} should be behave as currently.

How about {{map(ARRAY [1, 2], ARRAY ["a", "b"])}}?



> 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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