Packages

c

org.apache.spark.sql.execution.command

DescribeDatabaseCommand

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, QueryPlanConstraints, ConstraintHelper, LogicalPlanStats, AnalysisHelper, 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. QueryPlanConstraints
  9. ConstraintHelper
  10. LogicalPlanStats
  11. AnalysisHelper
  12. QueryPlan
  13. TreeNode
  14. Product
  15. Equals
  16. AnyRef
  17. Any
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Visibility
  1. Public
  2. All

Instance Constructors

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

Value Members

  1. lazy val allAttributes: AttributeSeq
    Definition Classes
    QueryPlan
  2. def analyzed: Boolean
    Definition Classes
    AnalysisHelper
  3. def apply(number: Int): TreeNode[_]
    Definition Classes
    TreeNode
  4. def argString(maxFields: Int): String
    Definition Classes
    TreeNode
  5. def asCode: String
    Definition Classes
    TreeNode
  6. final lazy val canonicalized: LogicalPlan
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  7. def children: Seq[LogicalPlan]
    Definition Classes
    Command → TreeNode
  8. def childrenResolved: Boolean
    Definition Classes
    LogicalPlan
  9. def clone(): LogicalPlan
    Definition Classes
    TreeNode → AnyRef
  10. def collect[B](pf: PartialFunction[LogicalPlan, B]): Seq[B]
    Definition Classes
    TreeNode
  11. def collectFirst[B](pf: PartialFunction[LogicalPlan, B]): Option[B]
    Definition Classes
    TreeNode
  12. def collectLeaves(): Seq[LogicalPlan]
    Definition Classes
    TreeNode
  13. def collectWithSubqueries[B](f: PartialFunction[LogicalPlan, B]): Seq[B]
    Definition Classes
    QueryPlan
  14. def conf: SQLConf
    Definition Classes
    QueryPlan
  15. lazy val constraints: ExpressionSet
    Definition Classes
    QueryPlanConstraints
  16. def constructIsNotNullConstraints(constraints: Set[Expression], output: Seq[Attribute]): Set[Expression]
    Definition Classes
    ConstraintHelper
  17. lazy val containsChild: Set[TreeNode[_]]
    Definition Classes
    TreeNode
  18. val databaseName: String
  19. final def expressions: Seq[Expression]
    Definition Classes
    QueryPlan
  20. val extended: Boolean
  21. def fastEquals(other: TreeNode[_]): Boolean
    Definition Classes
    TreeNode
  22. def find(f: (LogicalPlan) ⇒ Boolean): Option[LogicalPlan]
    Definition Classes
    TreeNode
  23. def flatMap[A](f: (LogicalPlan) ⇒ TraversableOnce[A]): Seq[A]
    Definition Classes
    TreeNode
  24. def foreach(f: (LogicalPlan) ⇒ Unit): Unit
    Definition Classes
    TreeNode
  25. def foreachUp(f: (LogicalPlan) ⇒ Unit): Unit
    Definition Classes
    TreeNode
  26. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], append: (String) ⇒ Unit, verbose: Boolean, prefix: String, addSuffix: Boolean, maxFields: Int, printNodeId: Boolean): Unit
    Definition Classes
    TreeNode
  27. def getTagValue[T](tag: TreeNodeTag[T]): Option[T]
    Definition Classes
    TreeNode
  28. def hashCode(): Int
    Definition Classes
    TreeNode → AnyRef → Any
  29. def inferAdditionalConstraints(constraints: Set[Expression]): Set[Expression]
    Definition Classes
    ConstraintHelper
  30. def innerChildren: Seq[QueryPlan[_]]
    Definition Classes
    QueryPlan → TreeNode
  31. def inputSet: AttributeSet
    Definition Classes
    QueryPlan
  32. final def invalidateStatsCache(): Unit
    Definition Classes
    LogicalPlanStats
  33. def isStreaming: Boolean
    Definition Classes
    LogicalPlan
  34. def makeCopy(newArgs: Array[AnyRef]): LogicalPlan
    Definition Classes
    TreeNode
  35. def map[A](f: (LogicalPlan) ⇒ A): Seq[A]
    Definition Classes
    TreeNode
  36. def mapChildren(f: (LogicalPlan) ⇒ LogicalPlan): LogicalPlan
    Definition Classes
    TreeNode
  37. def mapExpressions(f: (Expression) ⇒ Expression): DescribeDatabaseCommand.this.type
    Definition Classes
    QueryPlan
  38. def maxRows: Option[Long]
    Definition Classes
    LogicalPlan
  39. def maxRowsPerPartition: Option[Long]
    Definition Classes
    LogicalPlan
  40. lazy val metrics: Map[String, SQLMetric]
    Definition Classes
    RunnableCommand
  41. final def missingInput: AttributeSet
    Definition Classes
    QueryPlan
  42. def nodeName: String
    Definition Classes
    TreeNode
  43. def numberedTreeString: String
    Definition Classes
    TreeNode
  44. val origin: Origin
    Definition Classes
    TreeNode
  45. val output: Seq[Attribute]
    Definition Classes
    DescribeDatabaseCommand → Command → QueryPlan
  46. def outputOrdering: Seq[SortOrder]
    Definition Classes
    LogicalPlan
  47. lazy val outputSet: AttributeSet
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  48. def p(number: Int): LogicalPlan
    Definition Classes
    TreeNode
  49. def prettyJson: String
    Definition Classes
    TreeNode
  50. def printSchema(): Unit
    Definition Classes
    QueryPlan
  51. def producedAttributes: AttributeSet
    Definition Classes
    QueryPlan
  52. lazy val references: AttributeSet
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  53. def refresh(): Unit
    Definition Classes
    LogicalPlan
  54. def resolve(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  55. def resolve(schema: StructType, resolver: Resolver): Seq[Attribute]
    Definition Classes
    LogicalPlan
  56. def resolveChildren(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  57. def resolveExpressions(r: PartialFunction[Expression, Expression]): LogicalPlan
    Definition Classes
    AnalysisHelper
  58. def resolveOperators(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  59. def resolveOperatorsDown(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  60. def resolveOperatorsUp(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  61. def resolveQuoted(name: String, resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  62. lazy val resolved: Boolean
    Definition Classes
    LogicalPlan
  63. def run(sparkSession: SparkSession): Seq[Row]
    Definition Classes
    DescribeDatabaseCommand → RunnableCommand
  64. def sameOutput(other: LogicalPlan): Boolean
    Definition Classes
    LogicalPlan
  65. final def sameResult(other: LogicalPlan): Boolean
    Definition Classes
    QueryPlan
  66. lazy val schema: StructType
    Definition Classes
    QueryPlan
  67. def schemaString: String
    Definition Classes
    QueryPlan
  68. final def semanticHash(): Int
    Definition Classes
    QueryPlan
  69. def setTagValue[T](tag: TreeNodeTag[T], value: T): Unit
    Definition Classes
    TreeNode
  70. def simpleString(maxFields: Int): String
    Definition Classes
    QueryPlan → TreeNode
  71. def simpleStringWithNodeId(): String
    Definition Classes
    QueryPlan → TreeNode
  72. def stats: Statistics
    Definition Classes
    Command → LogicalPlanStats
  73. def subqueries: Seq[LogicalPlan]
    Definition Classes
    QueryPlan
  74. def subqueriesAll: Seq[LogicalPlan]
    Definition Classes
    QueryPlan
  75. def toJSON: String
    Definition Classes
    TreeNode
  76. def toString(): String
    Definition Classes
    TreeNode → AnyRef → Any
  77. def transform(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    TreeNode
  78. def transformAllExpressions(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type
    Definition Classes
    AnalysisHelper → QueryPlan
  79. def transformDown(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper → TreeNode
  80. def transformExpressions(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type
    Definition Classes
    QueryPlan
  81. def transformExpressionsDown(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type
    Definition Classes
    QueryPlan
  82. def transformExpressionsUp(rule: PartialFunction[Expression, Expression]): DescribeDatabaseCommand.this.type
    Definition Classes
    QueryPlan
  83. def transformUp(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper → TreeNode
  84. def treeString(append: (String) ⇒ Unit, verbose: Boolean, addSuffix: Boolean, maxFields: Int, printOperatorId: Boolean): Unit
    Definition Classes
    TreeNode
  85. final def treeString(verbose: Boolean, addSuffix: Boolean, maxFields: Int, printOperatorId: Boolean): String
    Definition Classes
    TreeNode
  86. final def treeString: String
    Definition Classes
    TreeNode
  87. def unsetTagValue[T](tag: TreeNodeTag[T]): Unit
    Definition Classes
    TreeNode
  88. def verboseString(maxFields: Int): String
    Definition Classes
    QueryPlan → TreeNode
  89. def verboseStringWithOperatorId(): String
    Definition Classes
    QueryPlan
  90. def verboseStringWithSuffix(maxFields: Int): String
    Definition Classes
    LogicalPlan → TreeNode
  91. def withNewChildren(newChildren: Seq[LogicalPlan]): LogicalPlan
    Definition Classes
    TreeNode