[jira] [Created] (FLINK-15466) `FlinkAggregateExpandDistinctAggregatesRule` generates wrong plan for cases that have distinct aggs with filter.

[Shuo Cheng (Jira)]

Shuo Cheng created FLINK-15466:
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             Summary: `FlinkAggregateExpandDistinctAggregatesRule` generates 
wrong plan for cases that have distinct aggs with filter.
                 Key: FLINK-15466
                 URL: https://issues.apache.org/jira/browse/FLINK-15466
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
    Affects Versions: 1.9.1, 1.9.0, 1.8.3
            Reporter: Shuo Cheng
             Fix For: 1.10.0
         Attachments: image-2020-01-03-14-20-54-887.png

For the sql in batch mode,

 
{code:java}
SELECT 
   a, COUNT(a), SUM(DISTINCT b) FILTER (WHERE a > 0)
FROM MyTable 
GROUP BY a{code}
 

plan generated after logical stage is as following, which is not correct. The 
`Filter $4` should be `$f2 *and* $g_0`.

!image-2020-01-03-14-20-54-887.png!



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