spark技术分享PlanExpression Contract for Expressions with Query Plans
PlanExpression is the contract for Catalyst expressions that contain a QueryPlan.
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package org.apache.spark.sql.catalyst.expressions abstract class PlanExpression[T <: QueryPlan[_]] extends Expression { // only required methods that have no implementation // the others follow def exprId: ExprId def plan: T def withNewPlan(plan: T): PlanExpression[T] } |
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| PlanExpression | Description |
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