Class

org.apache.spark.sql.execution.command

DescribeDatabaseCommand

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case class DescribeDatabaseCommand(databaseName: String, extended: Boolean) extends LogicalPlan with RunnableCommand with Product with Serializable

A command for users to show the name of the database, its comment (if one has been set), and its root location on the filesystem. When extended is true, it also shows the database's properties If the database does not exist, an error message will be issued to indicate the database does not exist. The syntax of using this command in SQL is

DESCRIBE DATABASE [EXTENDED] db_name
Linear Supertypes
Serializable, Serializable, RunnableCommand, Command, LogicalPlan, Logging, QueryPlan[LogicalPlan], TreeNode[LogicalPlan], Product, Equals, AnyRef, Any
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Inherited
  1. DescribeDatabaseCommand
  2. Serializable
  3. Serializable
  4. RunnableCommand
  5. Command
  6. LogicalPlan
  7. Logging
  8. QueryPlan
  9. TreeNode
  10. Product
  11. Equals
  12. AnyRef
  13. Any
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Visibility
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Instance Constructors

  1. new DescribeDatabaseCommand(databaseName: String, extended: Boolean)

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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. 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. def children: Seq[LogicalPlan]

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    Definition Classes
    RunnableCommand → 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. def collect[B](pf: PartialFunction[LogicalPlan, B]): Seq[B]

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

  17. lazy val constraints: ExpressionSet

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    TreeNode

  19. val databaseName: String

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

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    Definition Classes
    AnyRef

  21. final def expressions: Seq[Expression]

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    Definition Classes
    QueryPlan

  22. val extended: Boolean

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

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    Definition Classes
    TreeNode

  24. def finalize(): Unit

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

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    AnyRef → Any

  31. def getNodeNumbered(number: MutableInt): LogicalPlan

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    Attributes
    protected
    Definition Classes
    TreeNode

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

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    Attributes
    protected
    Definition Classes
    QueryPlan

  33. def hashCode(): Int

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    Definition Classes
    TreeNode → AnyRef → Any

  34. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    QueryPlan → TreeNode

  36. def inputSet: AttributeSet

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    Definition Classes
    QueryPlan

  37. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  38. def isStreaming: Boolean

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    Definition Classes
    LogicalPlan

  39. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  40. def jsonFields: List[JField]

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    Attributes
    protected
    Definition Classes
    TreeNode

  41. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

  48. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

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

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    Attributes
    protected
    Definition Classes
    TreeNode

  57. def maxRows: Option[Long]

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    Definition Classes
    LogicalPlan

  58. def missingInput: AttributeSet

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    AnyRef

  60. def nodeName: String

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    Definition Classes
    TreeNode

  61. final def notify(): Unit

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    Definition Classes
    AnyRef

  62. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  63. def numberedTreeString: String

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    Definition Classes
    TreeNode

  64. val origin: Origin

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    Definition Classes
    TreeNode

  65. def otherCopyArgs: Seq[AnyRef]

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    Attributes
    protected
    Definition Classes
    TreeNode

  66. val output: Seq[Attribute]

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    Definition Classes
    DescribeDatabaseCommand → RunnableCommand → QueryPlan

  67. def outputSet: AttributeSet

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    Definition Classes
    QueryPlan

  68. def prettyJson: String

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    Definition Classes
    TreeNode

  69. def printSchema(): Unit

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    Definition Classes
    QueryPlan

  70. def producedAttributes: AttributeSet

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    Definition Classes
    QueryPlan

  71. def references: AttributeSet

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    Definition Classes
    QueryPlan

  72. def refresh(): Unit

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    Definition Classes
    LogicalPlan

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

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    Attributes
    protected
    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    LogicalPlan

  80. lazy val resolved: Boolean

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    Definition Classes
    LogicalPlan

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

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    Definition Classes
    DescribeDatabaseCommand → RunnableCommand

  82. def sameResult(plan: LogicalPlan): Boolean

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    Definition Classes
    QueryPlan

  83. lazy val schema: StructType

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    Definition Classes
    QueryPlan

  84. def schemaString: String

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    Definition Classes
    QueryPlan

  85. def simpleString: String

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    Definition Classes
    QueryPlan → TreeNode

  86. def statePrefix: String

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    Attributes
    protected
    Definition Classes
    LogicalPlan → QueryPlan

  87. def statistics: Statistics

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    Definition Classes
    LogicalPlan

  88. def stringArgs: Iterator[Any]

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    Attributes
    protected
    Definition Classes
    TreeNode

  89. def subqueries: Seq[LogicalPlan]

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    AnyRef

  91. def toJSON: String

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    Definition Classes
    TreeNode

  92. def toString(): String

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    Definition Classes
    TreeNode → AnyRef → Any

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

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    Definition Classes
    TreeNode

  94. def transformAllExpressions(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type

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    Definition Classes
    QueryPlan

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

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    Attributes
    protected
    Definition Classes
    TreeNode

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

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    Definition Classes
    TreeNode

  97. def transformExpressions(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type

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    Definition Classes
    QueryPlan

  98. def transformExpressionsDown(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type

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    Definition Classes
    QueryPlan

  99. def transformExpressionsUp(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type

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    Definition Classes
    QueryPlan

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

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    Definition Classes
    TreeNode

  101. def treeString(verbose: Boolean): String

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    Definition Classes
    TreeNode

  102. def treeString: String

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    Definition Classes
    TreeNode

  103. def validConstraints: Set[Expression]

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    Attributes
    protected
    Definition Classes
    QueryPlan

  104. def verboseString: String

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    Definition Classes
    QueryPlan → TreeNode

  105. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  108. 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 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