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Posted to issues@flink.apache.org by "Chengxiang Li (JIRA)" <ji...@apache.org> on 2016/02/25 04:00:22 UTC
[jira] [Created] (FLINK-3503) [SQL] ProjectJoinTransposeRule fails
to push down project.
Chengxiang Li created FLINK-3503:
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Summary: [SQL] ProjectJoinTransposeRule fails to push down project.
Key: FLINK-3503
URL: https://issues.apache.org/jira/browse/FLINK-3503
Project: Flink
Issue Type: Improvement
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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