Package io.trino.sql.planner.iterative.rule

Class RemoveRedundantLimit

java.lang.Object

io.trino.sql.planner.iterative.rule.RemoveRedundantLimit

All Implemented Interfaces:

Rule<LimitNode>

public class RemoveRedundantLimit
extends Object
implements Rule<LimitNode>

Remove Limit node when the subplan is guaranteed to produce fewer rows than the limit and replace the plan with empty values if the limit count is 0.

Nested Class Summary

Nested classes/interfaces inherited from interface io.trino.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor	Description
RemoveRedundantLimit()

Method Summary

Modifier and Type	Method	Description
Rule.Result	apply(LimitNode limit, Captures captures, Rule.Context context)
Pattern<LimitNode>	getPattern()	Returns a pattern to which plan nodes this rule applies.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.sql.planner.iterative.Rule

isEnabled

Constructor Details

RemoveRedundantLimit

public RemoveRedundantLimit()

Method Details

getPattern

public Pattern<LimitNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<LimitNode>

apply

public Rule.Result apply(LimitNode limit,
 Captures captures,
 Rule.Context context)

Specified by:

apply in interface Rule<LimitNode>