Fabian Hueske created FLINK-5256:
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Summary: Extend DataSetSingleRowJoin to support Left and Right
joins
Key: FLINK-5256
URL: https://issues.apache.org/jira/browse/FLINK-5256
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Affects Versions: 1.2.0
Reporter: Fabian Hueske
The {{DataSetSingleRowJoin}} is a broadcast-map join that supports arbitrary
inner joins where one input is a single row.
I found that Calcite translates certain subqueries into non-equi left and right
joins with single input. These cases can be handled if the
{{DataSetSingleRowJoin}} is extended to support outer joins on the
non-single-row input, i.e., left joins if the right side is single input and
vice versa.
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