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https://issues.apache.org/jira/browse/FLINK-20482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Huang Xingbo updated FLINK-20482:
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Summary: Support General Python UDF for Map Operation in Python Table API
(was: Support Map Operation in Python Table API)
> Support General Python UDF for Map Operation in Python Table API
> ----------------------------------------------------------------
>
> Key: FLINK-20482
> URL: https://issues.apache.org/jira/browse/FLINK-20482
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Reporter: Huang Xingbo
> Priority: Major
> Fix For: 1.13.0
>
>
> Add Map Operation in Python Table API
> The usage:
> {code:java}
> t = ... # type: Table, table schema: [a: String, b: Int, c: Int]
> # map General Python UDF
> map_func = udf(lambda x: Row(x + 1, x * x),
> result_type=DataTypes.ROW([DataTypes.FIELD("a", DataTypes.INT()),
> DataTypes.FIELD("b", DataTypes.INT())]))
> t.map(map_func(t.b)).alias("a", "b")
> {code}
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