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https://issues.apache.org/jira/browse/FLINK-7360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17323622#comment-17323622
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Flink Jira Bot commented on FLINK-7360:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Support Scala map type in Table API
> -----------------------------------
>
> Key: FLINK-7360
> URL: https://issues.apache.org/jira/browse/FLINK-7360
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / API
> Reporter: Timo Walther
> Assignee: xueyu
> Priority: Major
> Labels: stale-assigned
>
> Currently, Flink SQL supports only Java `java.util.Map`. Scala maps are
> treated as a blackbox with Flink `GenericTypeInfo`/SQL `ANY` data type.
> Therefore, you can forward these blackboxes and use them within scalar
> functions but accessing with the `['key']` operator is not supported.
> We should convert these special collections at the beginning, in order to use
> in a SQL statement.
> See:
> https://stackoverflow.com/questions/45471503/flink-table-api-sql-and-map-types-scala
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