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

Class RemoveRedundantOffset

java.lang.Object

io.trino.sql.planner.iterative.rule.RemoveRedundantOffset

All Implemented Interfaces:

Rule<OffsetNode>

public class RemoveRedundantOffset
extends Object
implements Rule<OffsetNode>

Remove Offset node and its subplan when the subplan is guaranteed to produce no more rows than the offset and replace the plan with empty values. Remove Offset node from the plan if the offset 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
RemoveRedundantOffset()

Method Summary

Modifier and Type	Method	Description
Rule.Result	apply(OffsetNode offset, Captures captures, Rule.Context context)
Pattern<OffsetNode>	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

RemoveRedundantOffset

public RemoveRedundantOffset()

Method Details

getPattern

public Pattern<OffsetNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<OffsetNode>

apply

public Rule.Result apply(OffsetNode offset,
 Captures captures,
 Rule.Context context)

Specified by:

apply in interface Rule<OffsetNode>