[jira] [Created] (FLINK-5676) Grouping on nested fields does not work

[Timo Walther (JIRA)]

Timo Walther created FLINK-5676:
-----------------------------------

             Summary: Grouping on nested fields does not work
                 Key: FLINK-5676
                 URL: https://issues.apache.org/jira/browse/FLINK-5676
             Project: Flink
          Issue Type: Bug
          Components: Table API & SQL
            Reporter: Timo Walther


{code}
tEnv
  .fromDataSet(pojoWithinnerPojo)
  .groupBy("innerPojo.get('line')")
  .select("innerPojo.get('line')")
{code}

fails with 

{code}
ValidationException: Cannot resolve [innerPojo] given input 
['innerPojo.get(line)].
{code}

I don't know if we want to support that but the exception should be more 
helpful anyway.



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