class JoinResolver extends TreeNodeResolver[Join, LogicalPlan]
Resolves Join operator by resolving its left and right children and its join condition. If the unresolved join is NaturalJoin or UsingJoin, the resulting operator will be Project, otherwise it will be Join.
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- JoinResolver
- TreeNodeResolver
- QueryErrorsBase
- DataTypeErrorsBase
- SQLConfHelper
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Instance Constructors
- new JoinResolver(resolver: Resolver, expressionResolver: ExpressionResolver)
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
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- final def ==(arg0: Any): Boolean
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- final def asInstanceOf[T0]: T0
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- def clone(): AnyRef
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- protected[lang]
- Definition Classes
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- @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
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- final def getClass(): Class[_ <: AnyRef]
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- 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
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- final def isInstanceOf[T0]: Boolean
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- final def ne(arg0: AnyRef): Boolean
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- def ordinalNumber(i: Int): String
- Definition Classes
- QueryErrorsBase
- def quoteByDefault(elem: String): String
- Attributes
- protected[sql]
- Definition Classes
- DataTypeErrorsBase
- def resolve(unresolvedJoin: Join): LogicalPlan
Resolves Join operator:
Resolves Join operator:
- Retrieve old output and child outputs if the operator is already resolved. This is relevant for partially resolved subtrees from DataFrame programs. Do not regenerate ExprIds if there are no conflicting ids.
- Resolve each child in the context of a) New NameScope b) New ExpressionIdAssigner mapping. Collect children name scopes to use in Join output computation.
- Based on the type of Join (natural, using or other) perform additional transformations and resolve join condition.
- Return the resulting Project or Join with new children optionally wrapped in WithCTE. See CteScope scaladoc for more info.
- Definition Classes
- JoinResolver → 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
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- final def wait(arg0: Long, arg1: Int): Unit
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- final def wait(arg0: Long): Unit
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- final def wait(): Unit
- Definition Classes
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- @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
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- protected[lang]
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- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)