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https://issues.apache.org/jira/browse/SPARK-23933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16452404#comment-16452404
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Kazuaki Ishizaki edited comment on SPARK-23933 at 4/25/18 6:48 PM:
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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"])}}? Or How about
{{CreateMap(Seq(CreateArray(sSeq.map(Literal(\_))),
CreateArray(iSeq.map(Literal(\_)))))}}?
was (Author: kiszk):
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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