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| author | Herman van Hovell <hvanhovell@questtec.nl> | 2015-11-07 13:37:37 -0800 |
|---|---|---|
| committer | Yin Huai <yhuai@databricks.com> | 2015-11-07 13:37:37 -0800 |
| commit | ef362846eb448769bcf774fc9090a5013d459464 (patch) | |
| tree | 028176c2c4cd5fdc3c3c3a2bcaf2e3a9022b2c86 /network | |
| parent | 2ff0e79a8647cca5c9c57f613a07e739ac4f677e (diff) | |
| download | spark-ef362846eb448769bcf774fc9090a5013d459464.tar.gz spark-ef362846eb448769bcf774fc9090a5013d459464.tar.bz2 spark-ef362846eb448769bcf774fc9090a5013d459464.zip | |
[SPARK-9241][SQL] Supporting multiple DISTINCT columns - follow-up
This PR is a follow up for PR https://github.com/apache/spark/pull/9406. It adds more documentation to the rewriting rule, removes a redundant if expression in the non-distinct aggregation path and adds a multiple distinct test to the AggregationQuerySuite.
cc yhuai marmbrus
Author: Herman van Hovell <hvanhovell@questtec.nl>
Closes #9541 from hvanhovell/SPARK-9241-followup.
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