Timo Walther created FLINK-3567:
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Summary: Rework selection when grouping in Table API
Key: FLINK-3567
URL: https://issues.apache.org/jira/browse/FLINK-3567
Project: Flink
Issue Type: Bug
Components: Table API
Reporter: Timo Walther
{code}table.groupBy("a").select("e"){code}
does not throw any exception.
Fabian looked at the implementation of GroupedTable.select() and it looks
incorrect. It does not group but just add a selection. Either we should reject
the select or select the value an arbitrary row of the group.
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