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[SPARK-5454] More robust handling of self joins
Also I fix a bunch of bad output in test cases. Author: Michael Armbrust <michael@databricks.com> Closes #4520 from marmbrus/selfJoin and squashes the following commits: 4f4a85c [Michael Armbrust] comments 49c8e26 [Michael Armbrust] fix tests 6fc38de [Michael Armbrust] fix style 55d64b3 [Michael Armbrust] fix dataframe selfjoins
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala 22 additions, 4 deletions...ala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/MultiInstanceRelation.scala 1 addition, 20 deletions...e/spark/sql/catalyst/analysis/MultiInstanceRelation.scala
- sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala 1 addition, 3 deletions.../scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala
- sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala 2 additions, 0 deletions...core/src/main/scala/org/apache/spark/sql/SQLContext.scala
- sql/core/src/test/resources/log4j.properties 3 additions, 0 deletionssql/core/src/test/resources/log4j.properties
- sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala 10 additions, 0 deletions.../src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
- sql/hive/src/test/scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala 1 addition, 3 deletions.../scala/org/apache/spark/sql/catalyst/plans/PlanTest.scala
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