com.facebook.presto.sql.planner.optimizations

Class ExpressionEquivalence

java.lang.Object

com.facebook.presto.sql.planner.optimizations.ExpressionEquivalence

public class ExpressionEquivalence
extends Object

Constructor Summary

Constructors

Constructor and Description
ExpressionEquivalence(Metadata metadata, SqlParser sqlParser)

Method Summary

Modifier and Type	Method and Description
boolean	areExpressionsEquivalent(RowExpression leftExpression, RowExpression rightExpression)
boolean	areExpressionsEquivalent(Session session, Expression leftExpression, Expression rightExpression, TypeProvider types)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExpressionEquivalence

public ExpressionEquivalence(Metadata metadata,
                             SqlParser sqlParser)

Method Detail

areExpressionsEquivalent

public boolean areExpressionsEquivalent(Session session,
                                        Expression leftExpression,
                                        Expression rightExpression,
                                        TypeProvider types)

areExpressionsEquivalent

public boolean areExpressionsEquivalent(RowExpression leftExpression,
                                        RowExpression rightExpression)