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https://issues.apache.org/jira/browse/FLINK-3503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chengxiang Li updated FLINK-3503:
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Summary: ProjectJoinTransposeRule fails to push down project. (was: [SQL]
ProjectJoinTransposeRule fails to push down project.)
> ProjectJoinTransposeRule fails to push down project.
> ----------------------------------------------------
>
> Key: FLINK-3503
> URL: https://issues.apache.org/jira/browse/FLINK-3503
> Project: Flink
> Issue Type: Improvement
> Components: Table API
> Reporter: Chengxiang Li
> Priority: Minor
>
> {noformat}
> val ds1 = CollectionDataSets.getSmall3TupleDataSet(env).as('a, 'b, 'c)
> val ds2 = CollectionDataSets.get5TupleDataSet(env).as('d, 'e, 'f, 'g, 'h)
> val joinT = ds1.join(ds2).where('b === 'e).select('c, 'g)
> {noformat}
> For this query, ProjectJoinTransposeRule should pushes a Project past a Join
> by splitting the projection into a projection on top of each child of the
> join.
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