Wenchen Fan dd9ae7945a [SPARK-9351] [SQL] remove literals from grouping expressions in Aggregate ... literals in grouping expressions have no effect at all, only make our grouping key bigger, so we should remove them in Optimizer. I also make old and new aggregation code consistent about literals in grouping here. In old aggregation, actually literals in grouping are already removed but new aggregation is not. So I explicitly make it a rule in Optimizer. Author: Wenchen Fan <cloud0fan@outlook.com> Closes #7583 from cloud-fan/minor and squashes the following commits: 471adff [Wenchen Fan] add test 0839925 [Wenchen Fan] use transformDown when rewrite final result expressions		2015-07-27 11:23:29 -07:00
..
resources	[SPARK-6758]block the right jetty package in log	2015-04-09 17:44:08 -04:00
scala/org/apache/spark/sql	[SPARK-9351] [SQL] remove literals from grouping expressions in Aggregate	2015-07-27 11:23:29 -07:00