Class

org.apache.spark.sql.execution.command

ExplainCommand

Related Doc: package command

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case class ExplainCommand(logicalPlan: LogicalPlan, output: Seq[Attribute] = ..., extended: Boolean = false, codegen: Boolean = false) extends LeafNode with RunnableCommand with Product with Serializable

An explain command for users to see how a command will be executed.

Note that this command takes in a logical plan, runs the optimizer on the logical plan (but do NOT actually execute it).

EXPLAIN (EXTENDED | CODEGEN) SELECT * FROM ...
logicalPlan

plan to explain

output

output schema

extended

whether to do extended explain or not

codegen

whether to output generated code from whole-stage codegen or not

Linear Supertypes
Serializable, Serializable, RunnableCommand, Command, LeafNode, LogicalPlan, Logging, QueryPlan[LogicalPlan], TreeNode[LogicalPlan], Product, Equals, AnyRef, Any
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Inherited
  1. ExplainCommand
  2. Serializable
  3. Serializable
  4. RunnableCommand
  5. Command
  6. LeafNode
  7. LogicalPlan
  8. Logging
  9. QueryPlan
  10. TreeNode
  11. Product
  12. Equals
  13. AnyRef
  14. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new ExplainCommand(logicalPlan: LogicalPlan, output: Seq[Attribute] = ..., extended: Boolean = false, codegen: Boolean = false)

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    logicalPlan

    plan to explain

    output

    output schema

    extended

    whether to do extended explain or not

    codegen

    whether to output generated code from whole-stage codegen or not

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. lazy val allAttributes: AttributeSeq

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    Definition Classes
    QueryPlan

  5. def analyzed: Boolean

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    Definition Classes
    LogicalPlan

  6. def apply(number: Int): LogicalPlan

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    Definition Classes
    TreeNode

  7. def argString: String

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    Definition Classes
    TreeNode

  8. def asCode: String

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    Definition Classes
    TreeNode

  9. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  10. lazy val canonicalized: LogicalPlan

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    Definition Classes
    LogicalPlan → QueryPlan

  11. final def children: Seq[LogicalPlan]

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    Definition Classes
    Command → LeafNode → TreeNode

  12. def childrenResolved: Boolean

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    Definition Classes
    LogicalPlan

  13. lazy val cleanArgs: Seq[Any]

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    Attributes
    protected
    Definition Classes
    QueryPlan

  14. def clone(): AnyRef

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

  15. val codegen: Boolean

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    whether to output generated code from whole-stage codegen or not

  16. def collect[B](pf: PartialFunction[LogicalPlan, B]): Seq[B]

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    Definition Classes
    TreeNode

  17. def collectFirst[B](pf: PartialFunction[LogicalPlan, B]): Option[B]

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    Definition Classes
    TreeNode

  18. def collectLeaves(): Seq[LogicalPlan]

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    Definition Classes
    TreeNode

  19. lazy val constraints: ExpressionSet

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    Definition Classes
    QueryPlan

  20. lazy val containsChild: Set[TreeNode[_]]

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    Definition Classes
    TreeNode

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

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    Definition Classes
    AnyRef

  22. final def expressions: Seq[Expression]

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    Definition Classes
    QueryPlan

  23. val extended: Boolean

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    whether to do extended explain or not

  24. def fastEquals(other: TreeNode[_]): Boolean

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    Definition Classes
    TreeNode

  25. def finalize(): Unit

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

  26. def find(f: (LogicalPlan) ⇒ Boolean): Option[LogicalPlan]

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    Definition Classes
    TreeNode

  27. def flatMap[A](f: (LogicalPlan) ⇒ TraversableOnce[A]): Seq[A]

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    Definition Classes
    TreeNode

  28. def foreach(f: (LogicalPlan) ⇒ Unit): Unit

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    Definition Classes
    TreeNode

  29. def foreachUp(f: (LogicalPlan) ⇒ Unit): Unit

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    Definition Classes
    TreeNode

  30. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], builder: StringBuilder, verbose: Boolean, prefix: String): StringBuilder

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    Definition Classes
    TreeNode

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

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    Definition Classes
    AnyRef → Any

  32. def getNodeNumbered(number: MutableInt): LogicalPlan

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    Attributes
    protected
    Definition Classes
    TreeNode

  33. def getRelevantConstraints(constraints: Set[Expression]): Set[Expression]

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    Attributes
    protected
    Definition Classes
    QueryPlan

  34. def hashCode(): Int

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    Definition Classes
    TreeNode → AnyRef → Any

  35. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  36. def innerChildren: Seq[QueryPlan[_]]

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    Attributes
    protected
    Definition Classes
    QueryPlan → TreeNode

  37. def inputSet: AttributeSet

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    Definition Classes
    QueryPlan

  38. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  39. def isStreaming: Boolean

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    Definition Classes
    LogicalPlan

  40. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  41. def jsonFields: List[JField]

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    Attributes
    protected
    Definition Classes
    TreeNode

  42. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

  49. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

  54. val logicalPlan: LogicalPlan

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    plan to explain

  55. def makeCopy(newArgs: Array[AnyRef]): LogicalPlan

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    Definition Classes
    TreeNode

  56. def map[A](f: (LogicalPlan) ⇒ A): Seq[A]

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    Definition Classes
    TreeNode

  57. def mapChildren(f: (LogicalPlan) ⇒ LogicalPlan): LogicalPlan

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    Definition Classes
    TreeNode

  58. def mapProductIterator[B](f: (Any) ⇒ B)(implicit arg0: ClassTag[B]): Array[B]

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    Attributes
    protected
    Definition Classes
    TreeNode

  59. def maxRows: Option[Long]

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    Definition Classes
    LogicalPlan

  60. def missingInput: AttributeSet

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    AnyRef

  62. def nodeName: String

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    Definition Classes
    TreeNode

  63. final def notify(): Unit

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    Definition Classes
    AnyRef

  64. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  65. def numberedTreeString: String

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    Definition Classes
    TreeNode

  66. val origin: Origin

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    Definition Classes
    TreeNode

  67. def otherCopyArgs: Seq[AnyRef]

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    Attributes
    protected
    Definition Classes
    TreeNode

  68. val output: Seq[Attribute]

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    output schema

    output schema

    Definition Classes
    ExplainCommand → Command → QueryPlan

  69. def outputSet: AttributeSet

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    Definition Classes
    QueryPlan

  70. def prettyJson: String

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    Definition Classes
    TreeNode

  71. def printSchema(): Unit

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    Definition Classes
    QueryPlan

  72. def producedAttributes: AttributeSet

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    Definition Classes
    LeafNode → QueryPlan

  73. def references: AttributeSet

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    Definition Classes
    QueryPlan

  74. def refresh(): Unit

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    Definition Classes
    LogicalPlan

  75. def resolve(nameParts: Seq[String], input: Seq[Attribute], resolver: Resolver): Option[NamedExpression]

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    Attributes
    protected
    Definition Classes
    LogicalPlan

  76. def resolve(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]

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    Definition Classes
    LogicalPlan

  77. def resolve(schema: StructType, resolver: Resolver): Seq[Attribute]

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    Definition Classes
    LogicalPlan

  78. def resolveChildren(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]

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    Definition Classes
    LogicalPlan

  79. def resolveExpressions(r: PartialFunction[Expression, Expression]): LogicalPlan

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    Definition Classes
    LogicalPlan

  80. def resolveOperators(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan

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    Definition Classes
    LogicalPlan

  81. def resolveQuoted(name: String, resolver: Resolver): Option[NamedExpression]

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    Definition Classes
    LogicalPlan

  82. lazy val resolved: Boolean

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    Definition Classes
    LogicalPlan

  83. def run(sparkSession: SparkSession): Seq[Row]

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    Definition Classes
    ExplainCommand → RunnableCommand

  84. def sameResult(plan: LogicalPlan): Boolean

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    Definition Classes
    QueryPlan

  85. lazy val schema: StructType

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    Definition Classes
    QueryPlan

  86. def schemaString: String

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    Definition Classes
    QueryPlan

  87. def simpleString: String

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    Definition Classes
    QueryPlan → TreeNode

  88. def statePrefix: String

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    Attributes
    protected
    Definition Classes
    LogicalPlan → QueryPlan

  89. def statistics: Statistics

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    Definition Classes
    LogicalPlan

  90. def stringArgs: Iterator[Any]

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    Attributes
    protected
    Definition Classes
    TreeNode

  91. def subqueries: Seq[LogicalPlan]

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    AnyRef

  93. def toJSON: String

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    Definition Classes
    TreeNode

  94. def toString(): String

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    Definition Classes
    TreeNode → AnyRef → Any

  95. def transform(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan

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    Definition Classes
    TreeNode

  96. def transformAllExpressions(rule: PartialFunction[Expression, Expression]): ExplainCommand.this.type

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    Definition Classes
    QueryPlan

  97. def transformChildren(rule: PartialFunction[LogicalPlan, LogicalPlan], nextOperation: (LogicalPlan, PartialFunction[LogicalPlan, LogicalPlan]) ⇒ LogicalPlan): LogicalPlan

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    Attributes
    protected
    Definition Classes
    TreeNode

  98. def transformDown(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan

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    Definition Classes
    TreeNode

  99. def transformExpressions(rule: PartialFunction[Expression, Expression]): ExplainCommand.this.type

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    Definition Classes
    QueryPlan

  100. def transformExpressionsDown(rule: PartialFunction[Expression, Expression]): ExplainCommand.this.type

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    Definition Classes
    QueryPlan

  101. def transformExpressionsUp(rule: PartialFunction[Expression, Expression]): ExplainCommand.this.type

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    Definition Classes
    QueryPlan

  102. def transformUp(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan

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    Definition Classes
    TreeNode

  103. def treeString(verbose: Boolean): String

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    Definition Classes
    TreeNode

  104. def treeString: String

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    Definition Classes
    TreeNode

  105. def validConstraints: Set[Expression]

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    Attributes
    protected
    Definition Classes
    QueryPlan

  106. def verboseString: String

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    Definition Classes
    QueryPlan → TreeNode

  107. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  110. def withNewChildren(newChildren: Seq[LogicalPlan]): LogicalPlan

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    Definition Classes
    TreeNode

Inherited from Serializable

Inherited from Serializable

Inherited from RunnableCommand

Inherited from Command

Inherited from LeafNode

Inherited from LogicalPlan

Inherited from Logging

Inherited from QueryPlan[LogicalPlan]

Inherited from TreeNode[LogicalPlan]

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped