EquivalentExpressions¶

Creating Instance¶

EquivalentExpressions takes the following to be created:

• subexpressionEliminationSkipForShotcutExpr

EquivalentExpressions is created when:

• CodegenContext is created and requested to subexpressionEliminationForWholeStageCodegen
• SubExprEvaluationRuntime is requested to proxyExpressions
• PhysicalAggregation is requested to unapply

Demo¶

import org.apache.spark.sql.catalyst.expressions.EquivalentExpressions
val equivalentExpressions = new EquivalentExpressions