Aaron Davidson c3576ffcd7 [SQL] Minor: Introduce SchemaRDD#aggregate() for simple aggregations ... ```scala rdd.aggregate(Sum('val)) ``` is just shorthand for ```scala rdd.groupBy()(Sum('val)) ``` but seems be more natural than doing a groupBy with no grouping expressions when you really just want an aggregation over all rows. Did not add a JavaSchemaRDD or Python API, as these seem to be lacking several other methods like groupBy() already -- leaving that cleanup for future patches. Author: Aaron Davidson <aaron@databricks.com> Closes #874 from aarondav/schemardd and squashes the following commits: e9e68ee [Aaron Davidson] Add comment db6afe2 [Aaron Davidson] Introduce SchemaRDD#aggregate() for simple aggregations		2014-05-25 18:37:44 -07:00
..
main/scala/org/apache/spark/sql	[SQL] Minor: Introduce SchemaRDD#aggregate() for simple aggregations	2014-05-25 18:37:44 -07:00
test	[SQL] Minor: Introduce SchemaRDD#aggregate() for simple aggregations	2014-05-25 18:37:44 -07:00