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https://issues.apache.org/jira/browse/FLINK-20616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Huang Xingbo updated FLINK-20616:
---------------------------------
    Description: 
Usage
{code:java}
@udf(result_type=DataTypes.ROW([DataTypes.FIELD("a", DataTypes.INT()),
                               DataTypes.FIELD("b", DataTypes.INT())])
def map_func(*args):
    return Row(*args)

t = ...  # type: Table, table schema: [a: String, b: Int]
t.map(map_func){code}

  was:
Usage
{code:java}
@udf(result_type=DataTypes.ROW([DataTypes.FIELD("a", DataTypes.INT()),
                               DataTypes.FIELD("b", DataTypes.INT())])
def map_func(args):
    args # Row(a:Int, b: Int)
    return args

t = ...  # type: Table, table schema: [a: String, b: Int]
t.map(map_func){code}


> Support row-based operation to accept user-defined function directly
> --------------------------------------------------------------------
>
>                 Key: FLINK-20616
>                 URL: https://issues.apache.org/jira/browse/FLINK-20616
>             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
>
>
> Usage
> {code:java}
> @udf(result_type=DataTypes.ROW([DataTypes.FIELD("a", DataTypes.INT()),
>                                DataTypes.FIELD("b", DataTypes.INT())])
> def map_func(*args):
>     return Row(*args)
> t = ...  # type: Table, table schema: [a: String, b: Int]
> t.map(map_func){code}



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