Wan Kun created SPARK-39893:
-------------------------------
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.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
