class SetOperationLikeResolver extends TreeNodeResolver[LogicalPlan, LogicalPlan]
The SetOperationLikeResolver performs Union, Intersect or Except operator resolution. These operators have 2+ children. Resolution involves checking and normalizing child output attributes (data types and nullability).
Linear Supertypes
Ordering
- Alphabetic
- By Inheritance
Inherited
- SetOperationLikeResolver
- TreeNodeResolver
- QueryErrorsBase
- DataTypeErrorsBase
- SQLConfHelper
- AnyRef
- Any
- Hide All
- Show All
Visibility
- Public
- Protected
Instance Constructors
- new SetOperationLikeResolver(resolver: Resolver, expressionResolver: ExpressionResolver)
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
- def conf: SQLConf
The active config object within the current scope.
The active config object within the current scope. See SQLConf.get for more information.
- Definition Classes
- SQLConfHelper
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @IntrinsicCandidate() @native()
- def getQueryContext(context: QueryContext): Array[QueryContext]
- Definition Classes
- DataTypeErrorsBase
- def getSummary(sqlContext: QueryContext): String
- Definition Classes
- DataTypeErrorsBase
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @IntrinsicCandidate() @native()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @IntrinsicCandidate() @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @IntrinsicCandidate() @native()
- def ordinalNumber(i: Int): String
- Definition Classes
- QueryErrorsBase
- def quoteByDefault(elem: String): String
- Attributes
- protected[sql]
- Definition Classes
- DataTypeErrorsBase
- def resolve(unresolvedOperator: LogicalPlan): LogicalPlan
Resolve the Union, Intersect or Except operators:
Resolve the Union, Intersect or Except operators:
- Resolve each child in the context of a) New NameScope b) New ExpressionIdAssigner mapping c) CTE scope. Collect child outputs to coerce them later.
- Create a new mapping in ExpressionIdAssigner for the current operator. We only need the left child mapping, because that's the only child whose expression IDs get propagated upwards for Union, Intersect or Except. This is an optimization.
- Compute widened data types for child output attributes using getTypeCoercion.findWiderTypeForTwo or throw "INCOMPATIBLE_COLUMN_TYPE" if coercion fails.
- Perform individual output deduplication to handle the distinct union case described in performIndividualOutputExpressionIdDeduplication scaladoc.
- Validate that child outputs have same length or throw "NUM_COLUMNS_MISMATCH" otherwise.
- Add Project with Cast on children needing attribute data type widening.
- Assert that coerced outputs don't have conflicting expression IDs.
- Merge transformed outputs using a separate logic for each operator type.
- Store merged output in current NameScope.
- Validate that the operator doesn't have unsupported data types in the output
- Create a new mapping in ExpressionIdAssigner using the coerced and validated outputs.
- Return the resolved operator with new children optionally wrapped in WithCTE. See CteScope scaladoc for more info.
- Definition Classes
- SetOperationLikeResolver → TreeNodeResolver
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toDSOption(option: String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLConf(conf: String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLConfVal(conf: String): String
- Definition Classes
- QueryErrorsBase
- def toSQLExpr(e: Expression): String
- Definition Classes
- QueryErrorsBase
- def toSQLId(parts: Seq[String]): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLId(parts: String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLStmt(text: String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLType(t: AbstractDataType): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLType(text: String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(v: Any, t: DataType): String
- Definition Classes
- QueryErrorsBase
- def toSQLValue(value: Double): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: Float): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: Long): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: Int): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: Short): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: UTF8String): String
- Definition Classes
- DataTypeErrorsBase
- def toSQLValue(value: String): String
- Definition Classes
- DataTypeErrorsBase
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- def withSQLConf[T](pairs: (String, String)*)(f: => T): T
Sets all SQL configurations specified in
pairs, callsf, and then restores all SQL configurations.Sets all SQL configurations specified in
pairs, callsf, and then restores all SQL configurations.- Attributes
- protected
- Definition Classes
- SQLConfHelper
Deprecated Value Members
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)