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https://issues.apache.org/jira/browse/FLINK-20506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-20506.
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Resolution: Fixed
Merged to master via 0a6e457e6b2bff9acc25e45c3083fc12a95fd717
> Support FlatMap Operation in Python Table API
> ---------------------------------------------
>
> Key: FLINK-20506
> URL: https://issues.apache.org/jira/browse/FLINK-20506
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Reporter: Huang Xingbo
> Assignee: Huang Xingbo
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> Support Python UDTF for FlatMap Operation in Python Table API
> The usage:
> {code:java}
> t = ... # type: Table, table schema: [a: String, b: Int, c: Int]
> # flat_map Python UDTF
> flat_map_func = udtf(lambda x: for i in range(x): yield Row(i + 1, i * i),
> result_types=[DataTypes.INT(), DataTypes.INT()]
> t.flat_map(flat_map_func(t.b)).alias("a", "b"){code}
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