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[SPARK-10641][SQL] Add Skewness and Kurtosis Support
Implementing skewness and kurtosis support based on following algorithm: https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Higher-order_statistics Author: sethah <seth.hendrickson16@gmail.com> Closes #9003 from sethah/SPARK-10641.
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala 5 additions, 0 deletions...apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala 5 additions, 0 deletions...apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala 5 additions, 0 deletions...ain/scala/org/apache/spark/sql/catalyst/dsl/package.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/functions.scala 329 additions, 0 deletions.../spark/sql/catalyst/expressions/aggregate/functions.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/utils.scala 30 additions, 0 deletions...ache/spark/sql/catalyst/expressions/aggregate/utils.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregates.scala 95 additions, 0 deletions...rg/apache/spark/sql/catalyst/expressions/aggregates.scala
- sql/core/src/main/scala/org/apache/spark/sql/GroupedData.scala 65 additions, 0 deletions...ore/src/main/scala/org/apache/spark/sql/GroupedData.scala
- sql/core/src/main/scala/org/apache/spark/sql/functions.scala 111 additions, 4 deletionssql/core/src/main/scala/org/apache/spark/sql/functions.scala
- sql/core/src/test/scala/org/apache/spark/sql/DataFrameAggregateSuite.scala 73 additions, 0 deletions.../scala/org/apache/spark/sql/DataFrameAggregateSuite.scala
- sql/core/src/test/scala/org/apache/spark/sql/QueryTest.scala 48 additions, 0 deletionssql/core/src/test/scala/org/apache/spark/sql/QueryTest.scala
- sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala 57 additions, 6 deletions...e/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
- sql/hive/compatibility/src/test/scala/org/apache/spark/sql/hive/execution/HiveCompatibilitySuite.scala 0 additions, 1 deletion...che/spark/sql/hive/execution/HiveCompatibilitySuite.scala
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