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author | Herman van Hovell <hvanhovell@questtec.nl> | 2015-11-10 16:28:21 -0800 |
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committer | Yin Huai <yhuai@databricks.com> | 2015-11-10 16:28:21 -0800 |
commit | 21c562fa03430365f5c2b7d6de1f8f60ab2140d4 (patch) | |
tree | d974f6433f33a0a401293a43315b98f002e04548 /pom.xml | |
parent | 3121e78168808c015fb21da8b0d44bb33649fb81 (diff) | |
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[SPARK-9241][SQL] Supporting multiple DISTINCT columns - follow-up (3)
This PR is a 2nd follow-up for [SPARK-9241](https://issues.apache.org/jira/browse/SPARK-9241). It contains the following improvements:
* Fix for a potential bug in distinct child expression and attribute alignment.
* Improved handling of duplicate distinct child expressions.
* Added test for distinct UDAF with multiple children.
cc yhuai
Author: Herman van Hovell <hvanhovell@questtec.nl>
Closes #9566 from hvanhovell/SPARK-9241-followup-2.
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