[jira] [Created] (SPARK-39893) Remote Aggregate if it is group only and all grouping and aggregate expressions are foldable

["Wan Kun (Jira)" <ji...@apache.org>]

Wan Kun created SPARK-39893:
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             Summary: Remote Aggregate if it is group only and all grouping and aggregate expressions are foldable
                 Key: SPARK-39893
                 URL: https://issues.apache.org/jira/browse/SPARK-39893
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.4.0
            Reporter: Wan Kun


If all groupingExpressions and aggregateExpressions in a aggregate are foldable, we can remove this aggregate.
For example, query : 
{code:java}
SELECT distinct 1001 as id , cast('2022-06-03' as date) AS DT FROM testData
{code}

the grouping expressions are : *[1001, 2022-06-03]*
the aggregate expressions are :  *[1001 AS id#274, 2022-06-03 AS DT#275]*
so we can skip scan table testData and remote the aggregate operation.



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