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[SPARK-6877][SQL] Add code generation support for Min
Currently `min` is not supported in code generation. This pr adds the support for it. Author: Liang-Chi Hsieh <viirya@gmail.com> Closes #5487 from viirya/add_min_codegen and squashes the following commits: 0ddec23 [Liang-Chi Hsieh] Add code generation support for Min.
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala 45 additions, 0 deletions...rg/apache/spark/sql/catalyst/expressions/arithmetic.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala 24 additions, 0 deletions...park/sql/catalyst/expressions/codegen/CodeGenerator.scala
- sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala 10 additions, 0 deletions.../sql/catalyst/expressions/ExpressionEvaluationSuite.scala
- sql/core/src/main/scala/org/apache/spark/sql/execution/GeneratedAggregate.scala 13 additions, 0 deletions...a/org/apache/spark/sql/execution/GeneratedAggregate.scala
- sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala 1 addition, 1 deletion...cala/org/apache/spark/sql/execution/SparkStrategies.scala
- sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala 11 additions, 3 deletions...e/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
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