Wan Kun created SPARK-42831:
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             Summary: Show result expressions in AggregateExec
                 Key: SPARK-42831
                 URL: https://issues.apache.org/jira/browse/SPARK-42831
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.4.0
            Reporter: Wan Kun


If the result expressions in AggregateExec is non-empty, we should show them. 
Or we will be confused due to some important expressions did not showed in DAG.

For example, the plan of query SELECT sum(p) from values(cast(23.4 as 
decimal(7,2))) t(p)  was not correct because the result expression 
MakeDecimal(sum(UnscaledValue(p#0))#1L,17,2) AS sum(p)#2 was now showing




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