[jira] [Created] (FLINK-8564) SELECT DISTINCT without aggregations should not require a retract stream

[Timo Walther (JIRA)]

Timo Walther created FLINK-8564:
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             Summary: SELECT DISTINCT without aggregations should not require a 
retract stream
                 Key: FLINK-8564
                 URL: https://issues.apache.org/jira/browse/FLINK-8564
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Timo Walther


A pure {{SELECT DISTINCT}} statement without aggregation functions should not 
require a retract stream. This is a valid append stream:

{code}
SELECT DISTINCT aid1, aid2, advertiser_id, platform_id FROM CsvTable
{code}



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