expressions

Type Members

1. abstract class MutableAggregationBuffer extends Row

   

   :: Experimental :: A Row representing an mutable aggregation buffer.

   :: Experimental :: A Row representing an mutable aggregation buffer.

   This is not meant to be extended outside of Spark.

   Annotations

   @Experimental()

2. abstract class UserDefinedAggregateFunction extends Serializable

   

   :: Experimental :: The base class for implementing user-defined aggregate functions (UDAF).

   :: Experimental :: The base class for implementing user-defined aggregate functions (UDAF).

   Annotations

   @Experimental()

3. class Window extends AnyRef

   

   :: Experimental :: Utility functions for defining window in DataFrames.

   :: Experimental :: Utility functions for defining window in DataFrames.

   // PARTITION BY country ORDER BY date ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
   Window.partitionBy("country").orderBy("date").rowsBetween(Long.MinValue, 0)
   
   // PARTITION BY country ORDER BY date ROWS BETWEEN 3 PRECEDING AND 3 FOLLOWING
   Window.partitionBy("country").orderBy("date").rowsBetween(-3, 3)

   Annotations

   @Experimental()

   Since

   1.4.0

4. class WindowSpec extends AnyRef

   

   :: Experimental :: A window specification that defines the partitioning, ordering, and frame boundaries.

   :: Experimental :: A window specification that defines the partitioning, ordering, and frame boundaries.

   Use the static methods in Window to create a WindowSpec.

   Annotations

   @Experimental()

   Since

   1.4.0