Databricks Scala Spark API < Back

Packages

package root

Definition Classes
root
package org

Definition Classes
root
package apache

Definition Classes
org
package spark
Core Spark functionality.
Core Spark functionality. org.apache.spark.SparkContext serves as the main entry point to Spark, while org.apache.spark.rdd.RDD is the data type representing a distributed collection, and provides most parallel operations.
In addition, org.apache.spark.rdd.PairRDDFunctions contains operations available only on RDDs of key-value pairs, such as groupByKey and join; org.apache.spark.rdd.DoubleRDDFunctions contains operations available only on RDDs of Doubles; and org.apache.spark.rdd.SequenceFileRDDFunctions contains operations available on RDDs that can be saved as SequenceFiles. These operations are automatically available on any RDD of the right type (e.g. RDD[(Int, Int)] through implicit conversions.
Java programmers should reference the org.apache.spark.api.java package for Spark programming APIs in Java.
Classes and methods marked with Experimental are user-facing features which have not been officially adopted by the Spark project. These are subject to change or removal in minor releases.
Classes and methods marked with Developer API are intended for advanced users want to extend Spark through lower level interfaces. These are subject to changes or removal in minor releases.

Definition Classes
apache
package sql
Allows the execution of relational queries, including those expressed in SQL using Spark.
Allows the execution of relational queries, including those expressed in SQL using Spark.

Definition Classes
spark
package connector

Definition Classes
sql
package expressions

Definition Classes
connector
package aggregate

Definition Classes
expressions
AggregateFunc
Aggregation
Avg
Count
CountStar
GeneralAggregateFunc
Max
Min
Sum
UserDefinedAggregateFunc

org.apache.spark.sql.connector.expressions.aggregate

CountStar

final class CountStar extends AggregateFunc

Annotations: @Evolving()

Linear Supertypes

AggregateFunc, Serializable, Expression, AnyRef, Any

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CountStar
AggregateFunc
Serializable
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Instance Constructors

new CountStar()

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def children(): Array[Expression]

Definition Classes
CountStar → Expression
Annotations
@Override()
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
def describe(): String

Definition Classes
Expression
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int

Definition Classes
AnyRef → Any
Annotations
@native()
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit

Definition Classes
AnyRef
Annotations
@native()
def references(): Array[NamedReference]

Definition Classes
Expression
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
CountStar → AnyRef → Any
Annotations
@Override()
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()

Packages

CountStar

final class CountStar extends AggregateFunc

Instance Constructors

Value Members

Inherited from AggregateFunc

Inherited from Serializable

Inherited from Expression

Inherited from AnyRef

Inherited from Any

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Packages

CountStar 

final class CountStar extends AggregateFunc

Instance Constructors

Value Members

Inherited from AggregateFunc

Inherited from Serializable

Inherited from Expression

Inherited from AnyRef

Inherited from Any

Ungrouped

CountStar