Object

org.apache.spark.sql.catalyst.optimizer

RewritePredicateSubquery

Related Doc: package optimizer

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object RewritePredicateSubquery extends Rule[LogicalPlan] with PredicateHelper

This rule rewrites predicate sub-queries into left semi/anti joins. The following predicates are supported: a. EXISTS/NOT EXISTS will be rewritten as semi/anti join, unresolved conditions in Filter will be pulled out as the join conditions. b. IN/NOT IN will be rewritten as semi/anti join, unresolved conditions in the Filter will be pulled out as join conditions, value = selected column will also be used as join condition.

Linear Supertypes
PredicateHelper, Rule[LogicalPlan], Logging, AnyRef, Any
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  1. RewritePredicateSubquery
  2. PredicateHelper
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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  4. def apply(plan: LogicalPlan): LogicalPlan

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    Definition Classes
    RewritePredicateSubquery → Rule

  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

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

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    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 it 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

  7. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  8. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  11. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any

  12. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  13. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  14. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  15. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  16. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging

  17. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  18. def logDebug(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  19. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  20. def logError(msg: ⇒ String): Unit

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    protected
    Definition Classes
    Logging

  21. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    protected
    Definition Classes
    Logging

  22. def logInfo(msg: ⇒ String): Unit

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    protected
    Definition Classes
    Logging

  23. def logName: String

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    protected
    Definition Classes
    Logging

  24. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  25. def logTrace(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  26. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  27. def logWarning(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  28. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  29. final def notify(): Unit

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    Definition Classes
    AnyRef

  30. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  31. def replaceAlias(condition: Expression, aliases: AttributeMap[Expression]): Expression

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    Attributes
    protected
    Definition Classes
    PredicateHelper

  32. val ruleName: String

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

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

    Definition Classes
    Rule

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

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    Attributes
    protected
    Definition Classes
    PredicateHelper

  34. def splitDisjunctivePredicates(condition: Expression): Seq[Expression]

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    Attributes
    protected
    Definition Classes
    PredicateHelper

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

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    Definition Classes
    AnyRef

  36. def toString(): String

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    Definition Classes
    AnyRef → Any

  37. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  39. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from PredicateHelper

Inherited from Rule[LogicalPlan]

Inherited from Logging

Inherited from AnyRef

Inherited from Any

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