Wenchen Fan e028fd3aed [SPARK-25736][SQL][TEST] add tests to verify the behavior of multi-column count ... ## What changes were proposed in this pull request? AFAIK multi-column count is not widely supported by the mainstream databases(postgres doesn't support), and the SQL standard doesn't define it clearly, as near as I can tell. Since Spark supports it, we should clearly document the current behavior and add tests to verify it. ## How was this patch tested? N/A Closes #22728 from cloud-fan/doc. Authored-by: Wenchen Fan <wenchen@databricks.com> Signed-off-by: hyukjinkwon <gurwls223@apache.org>		2018-10-16 15:13:01 +08:00
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benchmarks	[SPARK-25657][SQL][TEST] Refactor HashBenchmark to use main method	2018-10-07 09:49:37 -07:00
src	[SPARK-25736][SQL][TEST] add tests to verify the behavior of multi-column count	2018-10-16 15:13:01 +08:00
pom.xml	[SPARK-25592] Setting version to 3.0.0-SNAPSHOT	2018-10-02 08:48:24 -07:00