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[SPARK-9297] [SQL] Add covar_pop and covar_samp
JIRA: https://issues.apache.org/jira/browse/SPARK-9297 Add two aggregation functions: covar_pop and covar_samp. Author: Liang-Chi Hsieh <viirya@gmail.com> Author: Liang-Chi Hsieh <viirya@appier.com> Closes #10029 from viirya/covar-funcs.
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala 2 additions, 0 deletions...apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Covariance.scala 198 additions, 0 deletions...spark/sql/catalyst/expressions/aggregate/Covariance.scala
- sql/core/src/main/scala/org/apache/spark/sql/functions.scala 40 additions, 0 deletionssql/core/src/main/scala/org/apache/spark/sql/functions.scala
- sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/AggregationQuerySuite.scala 32 additions, 0 deletions...ache/spark/sql/hive/execution/AggregationQuerySuite.scala
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