PushPredicateThroughJoin

Pushes down Filter operators where the condition can be evaluated using only the attributes of the left or right side of a join. Other Filter conditions are moved into the condition of the Join.

And also Pushes down the join filter, where the condition can be evaluated using only the attributes of the left or right side of sub query when applicable.

Check https://cwiki.apache.org/confluence/display/Hive/OuterJoinBehavior for more details

Linear Supertypes

PredicateHelper, Rule[LogicalPlan], com.typesafe.scalalogging.slf4j.Logging, AnyRef, Any

Value Members

final def !=(arg0: AnyRef): Boolean

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

Definition Classes
Any
final def ##(): Int

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

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

Definition Classes
Any
def apply(plan: LogicalPlan): LogicalPlan

Definition Classes
PushPredicateThroughJoin → Rule
final def asInstanceOf[T0]: T0

Definition Classes
Any
def canEvaluate(expr: Expression, plan: LogicalPlan): Boolean

Returns true if expr can be evaluated using only the output of plan.
Returns true if expr can be evaluated using only the output of plan. This method can be used to determine when is is acceptable to move expression evaluation within a query plan.
For example consider a join between two relations R(a, b) and S(c, d).
canEvaluate(EqualTo(a,b), R) returns true where as canEvaluate(EqualTo(a,c), R) returns false.

Attributes
protected
Definition Classes
PredicateHelper
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
def finalize(): Unit

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

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
lazy val logger: Logger

Attributes
protected
Definition Classes
Logging
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
val ruleName: String

Name for this rule, automatically inferred based on class name.
Name for this rule, automatically inferred based on class name.

Definition Classes
Rule
def splitConjunctivePredicates(condition: Expression): Seq[Expression]

Attributes
protected
Definition Classes
PredicateHelper
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
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( ... )

object PushPredicateThroughJoin extends Rule[LogicalPlan] with PredicateHelper

Value Members

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

def apply(plan: LogicalPlan): LogicalPlan

final def asInstanceOf[T0]: T0

def canEvaluate(expr: Expression, plan: LogicalPlan): Boolean

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

lazy val logger: Logger

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

val ruleName: String

def splitConjunctivePredicates(condition: Expression): Seq[Expression]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from PredicateHelper

Inherited from Rule[LogicalPlan]

Inherited from com.typesafe.scalalogging.slf4j.Logging

Inherited from AnyRef

Inherited from Any

Ungrouped