[jira] [Commented] (FLINK-10974) Add FlatMap to TableAPI

[ASF GitHub Bot (JIRA)]

    [ 
https://issues.apache.org/jira/browse/FLINK-10974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16710950#comment-16710950
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ASF GitHub Bot commented on FLINK-10974:
----------------------------------------

dianfu commented on a change in pull request #7196: [FLINK-10974] [table] Add 
support for flatMap to table API
URL: https://github.com/apache/flink/pull/7196#discussion_r239301814
 
 

 ##########
 File path: 
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/table.scala
 ##########
 @@ -21,7 +21,7 @@ import org.apache.calcite.rel.RelNode
 import org.apache.flink.api.common.typeinfo.TypeInformation
 import org.apache.flink.api.java.operators.join.JoinType
 import org.apache.flink.table.calcite.{FlinkRelBuilder, FlinkTypeFactory}
-import org.apache.flink.table.expressions.{Alias, Asc, Expression, 
ExpressionParser, Ordering, ResolvedFieldReference, UnresolvedAlias, 
UnresolvedFieldReference, WindowProperty}
+import org.apache.flink.table.expressions.{Alias, Asc, Expression, 
ExpressionParser, Ordering, ResolvedFieldReference, TableFunctionCall, 
UnresolvedAlias, UnresolvedFieldReference, WindowProperty}
 
 Review comment:
   Done

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> Add FlatMap to TableAPI
> -----------------------
>
>                 Key: FLINK-10974
>                 URL: https://issues.apache.org/jira/browse/FLINK-10974
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>            Reporter: sunjincheng
>            Assignee: Dian Fu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.8.0
>
>
> Add FlatMap operator to Table API as described in [Google 
> doc|https://docs.google.com/document/d/1tnpxg31EQz2-MEzSotwFzqatsB4rNLz0I-l_vPa5H4Q/edit#heading=h.q23rny2iglsr].
> The usage：
> {code:java}
> val res = tab
>    .flatMap(fun: TableFunction)  // output has columns 'a, 'b, 'c
>    .select('a, 'c)
> {code}



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