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https://issues.apache.org/jira/browse/FLINK-31691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17737109#comment-17737109
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jackylau edited comment on FLINK-31691 at 6/26/23 11:49 AM:
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hi [~snuyanzin] do you have time to help review this pr
https://github.com/apache/flink/pull/22745?
was (Author: jackylau):
hi [~snuyanzin] do you have time to help review?
> Add MAP_FROM_ENTRIES supported in SQL & Table API
> -------------------------------------------------
>
> Key: FLINK-31691
> URL: https://issues.apache.org/jira/browse/FLINK-31691
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 1.18.0
> Reporter: jackylau
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.18.0
>
>
> map_from_entries(map) - Returns a map created from an arrays of row with two
> fields. Note that the number of fields in a row array should be 2 and the key
> of a row array should not be null.
> Syntax:
> map_from_entries(array_of_rows)
> Arguments:
> array_of_rows: an arrays of row with two fields.
> Returns:
> Returns a map created from an arrays of row with two fields. Note that the
> number of fields in a row array should be 2 and the key of a row array should
> not be null.
> Returns null if the argument is null
> {code:sql}
> > SELECT map_from_entries(map[1, 'a', 2, 'b']);
> [(1,"a"),(2,"b")]{code}
> See also
> presto [https://prestodb.io/docs/current/functions/map.html]
> spark https://spark.apache.org/docs/latest/api/sql/index.html#map_from_entries
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