Packages

c

org.apache.spark.sql.execution.command

ShowColumnsCommand

case class ShowColumnsCommand(databaseName: Option[String], tableName: TableIdentifier) extends LogicalPlan with RunnableCommand with Product with Serializable

A command to list the column names for a table.

The syntax of using this command in SQL is:

SHOW COLUMNS (FROM | IN) table_identifier [(FROM | IN) database];
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. ShowColumnsCommand
  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 ShowColumnsCommand(databaseName: Option[String], tableName: TableIdentifier)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. lazy val allAttributes: AttributeSeq
    Definition Classes
    QueryPlan
  5. def analyzed: Boolean
    Definition Classes
    AnalysisHelper
  6. def apply(number: Int): TreeNode[_]
    Definition Classes
    TreeNode
  7. def argString(maxFields: Int): String
    Definition Classes
    TreeNode
  8. def asCode: String
    Definition Classes
    TreeNode
  9. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  10. def assertNotAnalysisRule(): Unit
    Attributes
    protected
    Definition Classes
    AnalysisHelper
  11. final lazy val canonicalized: LogicalPlan
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  12. def children: Seq[LogicalPlan]
    Definition Classes
    Command → TreeNode
  13. def childrenResolved: Boolean
    Definition Classes
    LogicalPlan
  14. def clone(): LogicalPlan
    Definition Classes
    TreeNode → AnyRef
  15. def collect[B](pf: PartialFunction[LogicalPlan, B]): Seq[B]
    Definition Classes
    TreeNode
  16. def collectFirst[B](pf: PartialFunction[LogicalPlan, B]): Option[B]
    Definition Classes
    TreeNode
  17. def collectLeaves(): Seq[LogicalPlan]
    Definition Classes
    TreeNode
  18. def collectWithSubqueries[B](f: PartialFunction[LogicalPlan, B]): Seq[B]
    Definition Classes
    QueryPlan
  19. def conf: SQLConf
    Definition Classes
    QueryPlan
  20. lazy val constraints: ExpressionSet
    Definition Classes
    QueryPlanConstraints
  21. def constructIsNotNullConstraints(constraints: Set[Expression], output: Seq[Attribute]): Set[Expression]
    Definition Classes
    ConstraintHelper
  22. lazy val containsChild: Set[TreeNode[_]]
    Definition Classes
    TreeNode
  23. def copyTagsFrom(other: LogicalPlan): Unit
    Attributes
    protected
    Definition Classes
    TreeNode
  24. val databaseName: Option[String]
  25. def doCanonicalize(): LogicalPlan
    Attributes
    protected
    Definition Classes
    QueryPlan
  26. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  27. final def expressions: Seq[Expression]
    Definition Classes
    QueryPlan
  28. def fastEquals(other: TreeNode[_]): Boolean
    Definition Classes
    TreeNode
  29. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  30. def find(f: (LogicalPlan) ⇒ Boolean): Option[LogicalPlan]
    Definition Classes
    TreeNode
  31. def flatMap[A](f: (LogicalPlan) ⇒ TraversableOnce[A]): Seq[A]
    Definition Classes
    TreeNode
  32. def foreach(f: (LogicalPlan) ⇒ Unit): Unit
    Definition Classes
    TreeNode
  33. def foreachUp(f: (LogicalPlan) ⇒ Unit): Unit
    Definition Classes
    TreeNode
  34. def formattedNodeName: String
    Attributes
    protected
    Definition Classes
    QueryPlan
  35. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], append: (String) ⇒ Unit, verbose: Boolean, prefix: String, addSuffix: Boolean, maxFields: Int, printNodeId: Boolean): Unit
    Definition Classes
    TreeNode
  36. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  37. def getTagValue[T](tag: TreeNodeTag[T]): Option[T]
    Definition Classes
    TreeNode
  38. def hashCode(): Int
    Definition Classes
    TreeNode → AnyRef → Any
  39. def inferAdditionalConstraints(constraints: Set[Expression]): Set[Expression]
    Definition Classes
    ConstraintHelper
  40. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  41. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  42. def innerChildren: Seq[QueryPlan[_]]
    Definition Classes
    QueryPlan → TreeNode
  43. def inputSet: AttributeSet
    Definition Classes
    QueryPlan
  44. final def invalidateStatsCache(): Unit
    Definition Classes
    LogicalPlanStats
  45. def isCanonicalizedPlan: Boolean
    Attributes
    protected
    Definition Classes
    QueryPlan
  46. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  47. def isStreaming: Boolean
    Definition Classes
    LogicalPlan
  48. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  49. def jsonFields: List[JField]
    Attributes
    protected
    Definition Classes
    TreeNode
  50. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  51. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  52. def logDebug(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  53. def logError(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  54. def logError(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  55. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  56. def logInfo(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  57. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  58. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  59. def logTrace(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  60. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  61. def logWarning(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  62. def makeCopy(newArgs: Array[AnyRef]): LogicalPlan
    Definition Classes
    TreeNode
  63. def map[A](f: (LogicalPlan) ⇒ A): Seq[A]
    Definition Classes
    TreeNode
  64. def mapChildren(f: (LogicalPlan) ⇒ LogicalPlan): LogicalPlan
    Definition Classes
    TreeNode
  65. def mapExpressions(f: (Expression) ⇒ Expression): ShowColumnsCommand.this.type
    Definition Classes
    QueryPlan
  66. def mapProductIterator[B](f: (Any) ⇒ B)(implicit arg0: ClassTag[B]): Array[B]
    Attributes
    protected
    Definition Classes
    TreeNode
  67. def maxRows: Option[Long]
    Definition Classes
    LogicalPlan
  68. def maxRowsPerPartition: Option[Long]
    Definition Classes
    LogicalPlan
  69. lazy val metrics: Map[String, SQLMetric]
    Definition Classes
    RunnableCommand
  70. final def missingInput: AttributeSet
    Definition Classes
    QueryPlan
  71. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  72. def nodeName: String
    Definition Classes
    TreeNode
  73. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  74. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  75. def numberedTreeString: String
    Definition Classes
    TreeNode
  76. val origin: Origin
    Definition Classes
    TreeNode
  77. def otherCopyArgs: Seq[AnyRef]
    Attributes
    protected
    Definition Classes
    TreeNode
  78. val output: Seq[Attribute]
    Definition Classes
    ShowColumnsCommand → Command → QueryPlan
  79. def outputOrdering: Seq[SortOrder]
    Definition Classes
    LogicalPlan
  80. lazy val outputSet: AttributeSet
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  81. def p(number: Int): LogicalPlan
    Definition Classes
    TreeNode
  82. def prettyJson: String
    Definition Classes
    TreeNode
  83. def printSchema(): Unit
    Definition Classes
    QueryPlan
  84. def producedAttributes: AttributeSet
    Definition Classes
    QueryPlan
  85. lazy val references: AttributeSet
    Definition Classes
    QueryPlan
    Annotations
    @transient()
  86. def refresh(): Unit
    Definition Classes
    LogicalPlan
  87. def resolve(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  88. def resolve(schema: StructType, resolver: Resolver): Seq[Attribute]
    Definition Classes
    LogicalPlan
  89. def resolveChildren(nameParts: Seq[String], resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  90. def resolveExpressions(r: PartialFunction[Expression, Expression]): LogicalPlan
    Definition Classes
    AnalysisHelper
  91. def resolveOperators(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  92. def resolveOperatorsDown(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  93. def resolveOperatorsUp(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper
  94. def resolveQuoted(name: String, resolver: Resolver): Option[NamedExpression]
    Definition Classes
    LogicalPlan
  95. lazy val resolved: Boolean
    Definition Classes
    LogicalPlan
  96. def run(sparkSession: SparkSession): Seq[Row]
    Definition Classes
    ShowColumnsCommand → RunnableCommand
  97. def sameOutput(other: LogicalPlan): Boolean
    Definition Classes
    LogicalPlan
  98. final def sameResult(other: LogicalPlan): Boolean
    Definition Classes
    QueryPlan
  99. lazy val schema: StructType
    Definition Classes
    QueryPlan
  100. def schemaString: String
    Definition Classes
    QueryPlan
  101. final def semanticHash(): Int
    Definition Classes
    QueryPlan
  102. def setTagValue[T](tag: TreeNodeTag[T], value: T): Unit
    Definition Classes
    TreeNode
  103. def simpleString(maxFields: Int): String
    Definition Classes
    QueryPlan → TreeNode
  104. def simpleStringWithNodeId(): String
    Definition Classes
    QueryPlan → TreeNode
  105. def statePrefix: String
    Attributes
    protected
    Definition Classes
    LogicalPlan → QueryPlan
  106. def stats: Statistics
    Definition Classes
    Command → LogicalPlanStats
  107. val statsCache: Option[Statistics]
    Attributes
    protected
    Definition Classes
    LogicalPlanStats
  108. def stringArgs: Iterator[Any]
    Attributes
    protected
    Definition Classes
    TreeNode
  109. def subqueries: Seq[LogicalPlan]
    Definition Classes
    QueryPlan
  110. def subqueriesAll: Seq[LogicalPlan]
    Definition Classes
    QueryPlan
  111. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  112. val tableName: TableIdentifier
  113. def toJSON: String
    Definition Classes
    TreeNode
  114. def toString(): String
    Definition Classes
    TreeNode → AnyRef → Any
  115. def transform(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    TreeNode
  116. def transformAllExpressions(rule: PartialFunction[Expression, Expression]): ShowColumnsCommand.this.type
    Definition Classes
    AnalysisHelper → QueryPlan
  117. def transformDown(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper → TreeNode
  118. def transformExpressions(rule: PartialFunction[Expression, Expression]): ShowColumnsCommand.this.type
    Definition Classes
    QueryPlan
  119. def transformExpressionsDown(rule: PartialFunction[Expression, Expression]): ShowColumnsCommand.this.type
    Definition Classes
    QueryPlan
  120. def transformExpressionsUp(rule: PartialFunction[Expression, Expression]): ShowColumnsCommand.this.type
    Definition Classes
    QueryPlan
  121. def transformUp(rule: PartialFunction[LogicalPlan, LogicalPlan]): LogicalPlan
    Definition Classes
    AnalysisHelper → TreeNode
  122. def treeString(append: (String) ⇒ Unit, verbose: Boolean, addSuffix: Boolean, maxFields: Int, printOperatorId: Boolean): Unit
    Definition Classes
    TreeNode
  123. final def treeString(verbose: Boolean, addSuffix: Boolean, maxFields: Int, printOperatorId: Boolean): String
    Definition Classes
    TreeNode
  124. final def treeString: String
    Definition Classes
    TreeNode
  125. def unsetTagValue[T](tag: TreeNodeTag[T]): Unit
    Definition Classes
    TreeNode
  126. lazy val validConstraints: Set[Expression]
    Attributes
    protected
    Definition Classes
    QueryPlanConstraints
  127. def verboseString(maxFields: Int): String
    Definition Classes
    QueryPlan → TreeNode
  128. def verboseStringWithOperatorId(): String
    Definition Classes
    QueryPlan
  129. def verboseStringWithSuffix(maxFields: Int): String
    Definition Classes
    LogicalPlan → TreeNode
  130. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  131. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  132. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  133. def withNewChildren(newChildren: Seq[LogicalPlan]): LogicalPlan
    Definition Classes
    TreeNode

Inherited from Serializable

Inherited from Serializable

Inherited from RunnableCommand

Inherited from Command

Inherited from LogicalPlan

Inherited from Logging

Inherited from QueryPlanConstraints

Inherited from ConstraintHelper

Inherited from LogicalPlanStats

Inherited from AnalysisHelper

Inherited from QueryPlan[LogicalPlan]

Inherited from TreeNode[LogicalPlan]

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped