Package org.apache.calcite.rel.rules

Class CoreRules

java.lang.Object

org.apache.calcite.rel.rules.CoreRules

public class CoreRules
extends Object

Rules that perform logical transformations on relational expressions.

See Also:

• MaterializedViewRules

Field Summary

Fields

Modifier and Type	Field	Description
static final AggregateProjectPullUpConstantsRule	AGGREGATE_ANY_PULL_UP_CONSTANTS	More general form of AGGREGATE_PROJECT_PULL_UP_CONSTANTS that matches any relational expression.
static final AggregateCaseToFilterRule	AGGREGATE_CASE_TO_FILTER	Rule that converts CASE-style filtered aggregates into true filtered aggregates.
static final AggregateExpandDistinctAggregatesRule	AGGREGATE_EXPAND_DISTINCT_AGGREGATES	Rule that expands distinct aggregates (such as COUNT(DISTINCT x)) from a Aggregate.
static final AggregateExpandDistinctAggregatesRule	AGGREGATE_EXPAND_DISTINCT_AGGREGATES_TO_JOIN	As AGGREGATE_EXPAND_DISTINCT_AGGREGATES but generates a Join.
static final AggregateExpandWithinDistinctRule	AGGREGATE_EXPAND_WITHIN_DISTINCT	Rule that rewrites a LogicalAggregate that contains WITHIN DISTINCT aggregate functions to one that does not.
static final AggregateFilterTransposeRule	AGGREGATE_FILTER_TRANSPOSE	Rule that matches an Aggregate on a Filter and transposes them, pushing the aggregate below the filter.
static final AggregateJoinJoinRemoveRule	AGGREGATE_JOIN_JOIN_REMOVE	Rule that matches an Aggregate on a Join and removes the left input of the join provided that the left input is also a left join if possible.
static final AggregateJoinRemoveRule	AGGREGATE_JOIN_REMOVE	Rule that matches an Aggregate on a Join and removes the join provided that the join is a left join or right join and it computes no aggregate functions or all the aggregate calls have distinct.
static final AggregateJoinTransposeRule	AGGREGATE_JOIN_TRANSPOSE	Rule that pushes an Aggregate past a Join.
static final AggregateJoinTransposeRule	AGGREGATE_JOIN_TRANSPOSE_EXTENDED	As AGGREGATE_JOIN_TRANSPOSE, but extended to push down aggregate functions.
static final AggregateMergeRule	AGGREGATE_MERGE	Rule that matches an Aggregate on an Aggregate, and merges into a single Aggregate if the top aggregate's group key is a subset of the lower aggregate's group key, and the aggregates are expansions of rollups.
static final AggregateProjectMergeRule	AGGREGATE_PROJECT_MERGE	Rule that recognizes an Aggregate on top of a Project and if possible aggregates through the Project or removes the Project.
static final AggregateProjectPullUpConstantsRule	AGGREGATE_PROJECT_PULL_UP_CONSTANTS	Rule that removes constant keys from an Aggregate.
static final AggregateProjectStarTableRule	AGGREGATE_PROJECT_STAR_TABLE	Variant of AGGREGATE_STAR_TABLE that accepts a Project between the Aggregate and its StarTable.StarTableScan input.
static final AggregateReduceFunctionsRule	AGGREGATE_REDUCE_FUNCTIONS	Rule that reduces aggregate functions in an Aggregate to simpler forms.
static final AggregateRemoveRule	AGGREGATE_REMOVE	Rule that removes an Aggregate if it computes no aggregate functions (that is, it is implementing SELECT DISTINCT), or all the aggregate functions are splittable, and the underlying relational expression is already distinct.
static final AggregateStarTableRule	AGGREGATE_STAR_TABLE	Rule that matches an Aggregate on a StarTable.StarTableScan.
static final AggregateUnionAggregateRule	AGGREGATE_UNION_AGGREGATE	Rule that matches an Aggregate whose input is a Union one of whose inputs is an Aggregate.
static final AggregateUnionAggregateRule	AGGREGATE_UNION_AGGREGATE_FIRST	As AGGREGATE_UNION_AGGREGATE, but matches an Aggregate only as the left input of the Union.
static final AggregateUnionAggregateRule	AGGREGATE_UNION_AGGREGATE_SECOND	As AGGREGATE_UNION_AGGREGATE, but matches an Aggregate only as the right input of the Union.
static final AggregateUnionTransposeRule	AGGREGATE_UNION_TRANSPOSE	Rule that pushes an Aggregate past a non-distinct Union.
static final AggregateValuesRule	AGGREGATE_VALUES	Rule that applies an Aggregate to a Values (currently just an empty Values).
static final CalcMergeRule	CALC_MERGE	Rule that merges a Calc onto a Calc.
static final ReduceDecimalsRule	CALC_REDUCE_DECIMALS	Rule that reduces operations on the DECIMAL type, such as casts or arithmetic, into operations involving more primitive types such as BIGINT and DOUBLE.
static final ReduceExpressionsRule.CalcReduceExpressionsRule	CALC_REDUCE_EXPRESSIONS	Rule that reduces constants inside a LogicalCalc.
static final CalcRemoveRule	CALC_REMOVE	Rule that removes a trivial LogicalCalc.
static final CalcSplitRule	CALC_SPLIT	Rule that converts a Calc to a Project and Filter.
static final ProjectToWindowRule.CalcToWindowRule	CALC_TO_WINDOW	Rule that transforms a Calc that contains windowed aggregates to a mixture of LogicalWindow and Calc.
static final CoerceInputsRule	COERCE_INPUTS	Rule that pre-casts inputs to a particular type.
static final ExchangeRemoveConstantKeysRule	EXCHANGE_REMOVE_CONSTANT_KEYS	Rule that removes constants inside a LogicalExchange.
static final FilterAggregateTransposeRule	FILTER_AGGREGATE_TRANSPOSE	Rule that pushes a Filter past an Aggregate.
static final FilterCalcMergeRule	FILTER_CALC_MERGE	Rule that merges a Filter and a LogicalCalc.
static final FilterCorrelateRule	FILTER_CORRELATE	Rule that pushes a Filter above a Correlate into the inputs of the Correlate.
static final FilterRemoveIsNotDistinctFromRule	FILTER_EXPAND_IS_NOT_DISTINCT_FROM	Rule that replaces IS NOT DISTINCT FROM in a Filter with logically equivalent operations.
static final FilterTableScanRule	FILTER_INTERPRETER_SCAN	Rule that matches a Filter on an EnumerableInterpreter on a TableScan.
static final FilterJoinRule.FilterIntoJoinRule	FILTER_INTO_JOIN	Rule that tries to push filter expressions into a join condition and into the inputs of the join.
static final FilterJoinRule.FilterIntoJoinRule	FILTER_INTO_JOIN_DUMB	Dumber version of FILTER_INTO_JOIN.
static final FilterMergeRule	FILTER_MERGE	Rule that combines two LogicalFilters.
static final FilterMultiJoinMergeRule	FILTER_MULTI_JOIN_MERGE	Rule that merges a Filter into a MultiJoin, creating a richer MultiJoin.
static final FilterProjectTransposeRule	FILTER_PROJECT_TRANSPOSE	The default instance of FilterProjectTransposeRule.
static final ReduceExpressionsRule.FilterReduceExpressionsRule	FILTER_REDUCE_EXPRESSIONS	Rule that reduces constants inside a LogicalFilter.
static final FilterSampleTransposeRule	FILTER_SAMPLE_TRANSPOSE	Rule that pushes a Filter past a Sample.
static final FilterTableScanRule	FILTER_SCAN	Rule that matches a Filter on a TableScan.
static final FilterSetOpTransposeRule	FILTER_SET_OP_TRANSPOSE	Rule that pushes a Filter past a SetOp.
static final SubQueryRemoveRule	FILTER_SUB_QUERY_TO_CORRELATE	Rule that converts a sub-queries from filter expressions into Correlate instances.
static final FilterTableFunctionTransposeRule	FILTER_TABLE_FUNCTION_TRANSPOSE	Rule that pushes a LogicalFilter past a LogicalTableFunctionScan.
static final FilterToCalcRule	FILTER_TO_CALC	Rule that converts a LogicalFilter to a LogicalCalc.
static final ValuesReduceRule	FILTER_VALUES_MERGE	Rule that merges a Filter onto an underlying LogicalValues, resulting in a Values with potentially fewer rows.
static final FilterWindowTransposeRule	FILTER_WINDOW_TRANSPOSE	Rule that pushes a Filter past a Window.
static final UnionMergeRule	INTERSECT_MERGE	Rule that flattens an Intersect on an Intersect into a single Intersect.
static final IntersectToDistinctRule	INTERSECT_TO_DISTINCT	Rule that translates a distinct Intersect into a group of operators composed of Union, Aggregate, etc.
static final JoinAddRedundantSemiJoinRule	JOIN_ADD_REDUNDANT_SEMI_JOIN	Rule to add a semi-join into a Join.
static final JoinAssociateRule	JOIN_ASSOCIATE	Rule that changes a join based on the associativity rule, ((a JOIN b) JOIN c) → (a JOIN (b JOIN c)).
static final JoinCommuteRule	JOIN_COMMUTE	Rule that permutes the inputs to an inner Join.
static final JoinCommuteRule	JOIN_COMMUTE_OUTER	As JOIN_COMMUTE but swaps outer joins as well as inner joins.
static final FilterJoinRule.JoinConditionPushRule	JOIN_CONDITION_PUSH	Rule that pushes predicates in a Join into the inputs to the join.
static final JoinDeriveIsNotNullFilterRule	JOIN_DERIVE_IS_NOT_NULL_FILTER_RULE	Rule that derives IS NOT NULL predicates from a inner Join and creates Filters with those predicates as new inputs of the Join.
static final JoinExtractFilterRule	JOIN_EXTRACT_FILTER	Rule to convert an inner join to a filter on top of a cartesian inner join.
static final JoinUnionTransposeRule	JOIN_LEFT_UNION_TRANSPOSE	Rule that pushes a Join past a non-distinct Union as its left input.
static final SemiJoinRule.JoinOnUniqueToSemiJoinRule	JOIN_ON_UNIQUE_TO_SEMI_JOIN	Rule that creates a semi-join from a Join, and it's right keys are unique in its right input.
static final JoinProjectTransposeRule	JOIN_PROJECT_BOTH_TRANSPOSE	Rule that matches a LogicalJoin whose inputs are LogicalProjects, and pulls the project expressions up.
static final JoinProjectTransposeRule	JOIN_PROJECT_BOTH_TRANSPOSE_INCLUDE_OUTER	As JOIN_PROJECT_BOTH_TRANSPOSE but match outer as well as inner join.
static final JoinProjectTransposeRule	JOIN_PROJECT_LEFT_TRANSPOSE	As JOIN_PROJECT_BOTH_TRANSPOSE but only the left input is a LogicalProject.
static final JoinProjectTransposeRule	JOIN_PROJECT_LEFT_TRANSPOSE_INCLUDE_OUTER	As JOIN_PROJECT_LEFT_TRANSPOSE but match outer as well as inner join.
static final JoinProjectTransposeRule	JOIN_PROJECT_RIGHT_TRANSPOSE	As JOIN_PROJECT_BOTH_TRANSPOSE but only the right input is a LogicalProject.
static final JoinProjectTransposeRule	JOIN_PROJECT_RIGHT_TRANSPOSE_INCLUDE_OUTER	As JOIN_PROJECT_RIGHT_TRANSPOSE but match outer as well as inner join.
static final JoinPushExpressionsRule	JOIN_PUSH_EXPRESSIONS	Rule that matches a Join and pushes down expressions on either side of "equal" conditions.
static final JoinPushTransitivePredicatesRule	JOIN_PUSH_TRANSITIVE_PREDICATES	Rule that infers predicates from on a Join and creates Filters if those predicates can be pushed to its inputs.
static final ReduceExpressionsRule.JoinReduceExpressionsRule	JOIN_REDUCE_EXPRESSIONS	Rule that reduces constants inside a Join.
static final JoinUnionTransposeRule	JOIN_RIGHT_UNION_TRANSPOSE	Rule that pushes a Join past a non-distinct Union as its right input.
static final SubQueryRemoveRule	JOIN_SUB_QUERY_TO_CORRELATE	Rule that converts sub-queries from join expressions into Correlate instances.
static final JoinToCorrelateRule	JOIN_TO_CORRELATE	Rule that converts a LogicalJoin into a LogicalCorrelate.
static final JoinToMultiJoinRule	JOIN_TO_MULTI_JOIN	Rule that flattens a tree of LogicalJoins into a single MultiJoin with N inputs.
static final SemiJoinRule.JoinToSemiJoinRule	JOIN_TO_SEMI_JOIN	Rule that creates a semi-join from a Join with an empty Aggregate as its right input.
static final SortMergeRule	LIMIT_MERGE	Rule that merge a Sort representing the Limit semantics and another Sort representing the Limit or TOPN semantics.
static final MatchRule	MATCH	Rule that converts a LogicalMatch to the result of calling LogicalMatch.copy(org.apache.calcite.plan.RelTraitSet, java.util.List<org.apache.calcite.rel.RelNode>).
static final UnionMergeRule	MINUS_MERGE	Rule that flattens a Minus on a Minus into a single Minus.
static final MinusToDistinctRule	MINUS_TO_DISTINCT	Rule that translates a distinct Minus into a group of operators composed of Union, Aggregate, etc.
static final MultiJoinProjectTransposeRule	MULTI_JOIN_BOTH_PROJECT	Rule that matches a LogicalJoin whose inputs are both a MultiJoin with intervening LogicalProjects, and pulls the Projects up above the Join.
static final MultiJoinProjectTransposeRule	MULTI_JOIN_LEFT_PROJECT	As MULTI_JOIN_BOTH_PROJECT but only the left input has an intervening Project.
static final LoptOptimizeJoinRule	MULTI_JOIN_OPTIMIZE	Rule that re-orders a Join using a heuristic planner.
static final MultiJoinOptimizeBushyRule	MULTI_JOIN_OPTIMIZE_BUSHY	Rule that finds an approximately optimal ordering for join operators using a heuristic algorithm and can handle bushy joins.
static final MultiJoinProjectTransposeRule	MULTI_JOIN_RIGHT_PROJECT	As MULTI_JOIN_BOTH_PROJECT but only the right input has an intervening Project.
static final ProjectAggregateMergeRule	PROJECT_AGGREGATE_MERGE	Rule that matches a Project on an Aggregate, projecting away aggregate calls that are not used.
static final ProjectCalcMergeRule	PROJECT_CALC_MERGE	Rule that merges a LogicalProject and a LogicalCalc.
static final ProjectCorrelateTransposeRule	PROJECT_CORRELATE_TRANSPOSE	Rule that matches a Project on a Correlate and pushes the projections to the Correlate's left and right inputs.
static final ProjectFilterTransposeRule	PROJECT_FILTER_TRANSPOSE	Rule that pushes a Project past a Filter.
static final ProjectFilterTransposeRule	PROJECT_FILTER_TRANSPOSE_WHOLE_EXPRESSIONS	As PROJECT_FILTER_TRANSPOSE, but pushes down project and filter expressions whole, not field references.
static final ProjectFilterTransposeRule	PROJECT_FILTER_TRANSPOSE_WHOLE_PROJECT_EXPRESSIONS	As PROJECT_FILTER_TRANSPOSE, pushes down field references for filters, but pushes down project expressions whole.
static final ValuesReduceRule	PROJECT_FILTER_VALUES_MERGE	Rule that merges a Project on top of a Filter onto an underlying LogicalValues, resulting in a Values with different columns and potentially fewer rows.
static final ProjectTableScanRule	PROJECT_INTERPRETER_TABLE_SCAN	As PROJECT_TABLE_SCAN, but with an intervening EnumerableInterpreter.
static final ProjectJoinJoinRemoveRule	PROJECT_JOIN_JOIN_REMOVE	Rule that matches an Project on a Join and removes the left input of the join provided that the left input is also a left join.
static final ProjectJoinRemoveRule	PROJECT_JOIN_REMOVE	Rule that matches an Project on a Join and removes the join provided that the join is a left join or right join and the join keys are unique.
static final ProjectJoinTransposeRule	PROJECT_JOIN_TRANSPOSE	Rule that pushes a LogicalProject past a LogicalJoin by splitting the projection into a projection on top of each child of the join.
static final ProjectMergeRule	PROJECT_MERGE	Rule that merges a Project into another Project, provided the projects are not projecting identical sets of input references.
static final ProjectMultiJoinMergeRule	PROJECT_MULTI_JOIN_MERGE	Rule that pushes a Project into a MultiJoin, creating a richer MultiJoin.
static final ReduceExpressionsRule.ProjectReduceExpressionsRule	PROJECT_REDUCE_EXPRESSIONS	Rule that reduces constants inside a LogicalProject.
static final ProjectRemoveRule	PROJECT_REMOVE	Rule that, given a Project node that merely returns its input, converts the node into its input.
static final ProjectSetOpTransposeRule	PROJECT_SET_OP_TRANSPOSE	Rule that pushes a LogicalProject past a SetOp.
static final SubQueryRemoveRule	PROJECT_SUB_QUERY_TO_CORRELATE	Rule that converts sub-queries from project expressions into Correlate instances.
static final ProjectTableScanRule	PROJECT_TABLE_SCAN	Rule that converts a Project on a TableScan of a ProjectableFilterableTable to a Bindables.BindableTableScan.
static final ProjectToCalcRule	PROJECT_TO_CALC	Rule that converts a LogicalProject to a LogicalCalc.
static final ProjectToWindowRule.ProjectToLogicalProjectAndWindowRule	PROJECT_TO_LOGICAL_PROJECT_AND_WINDOW	Rule that transforms a Project into a mixture of LogicalProject and LogicalWindow.
static final SemiJoinRule.ProjectToSemiJoinRule	PROJECT_TO_SEMI_JOIN	Rule that creates a semi-join from a Project on top of a Join with an Aggregate as its right input.
static final ValuesReduceRule	PROJECT_VALUES_MERGE	Rule that merges a Project onto an underlying LogicalValues, resulting in a Values with different columns.
static final ProjectWindowTransposeRule	PROJECT_WINDOW_TRANSPOSE	Rule that pushes a LogicalProject past a LogicalWindow.
static final SampleToFilterRule	SAMPLE_TO_FILTER	Rule that rewrite Sample which is bernoulli to the Filter.
static final SemiJoinFilterTransposeRule	SEMI_JOIN_FILTER_TRANSPOSE	Rule that pushes a semi-join down in a tree past a Filter.
static final SemiJoinJoinTransposeRule	SEMI_JOIN_JOIN_TRANSPOSE	Rule that pushes a semi-join down in a tree past a Join.
static final SemiJoinProjectTransposeRule	SEMI_JOIN_PROJECT_TRANSPOSE	Rule that pushes a semi-join down in a tree past a Project.
static final SemiJoinRemoveRule	SEMI_JOIN_REMOVE	Rule that removes a semi-join from a join tree.
static final ExchangeRemoveConstantKeysRule	SORT_EXCHANGE_REMOVE_CONSTANT_KEYS	Rule that removes constants inside a LogicalSortExchange.
static final SortJoinCopyRule	SORT_JOIN_COPY	Rule that copies a Sort past a Join without its limit and offset.
static final SortJoinTransposeRule	SORT_JOIN_TRANSPOSE	Rule that pushes a Sort past a Join.
static final SortProjectTransposeRule	SORT_PROJECT_TRANSPOSE	Rule that pushes a Sort past a Project.
static final SortRemoveRule	SORT_REMOVE	Rule that removes a Sort if its input is already sorted.
static final SortRemoveConstantKeysRule	SORT_REMOVE_CONSTANT_KEYS	Rule that removes keys from a Sort if those keys are known to be constant, or removes the entire Sort if all keys are constant.
static final SortRemoveRedundantRule	SORT_REMOVE_REDUNDANT	Rule that removes redundant Order By or Limit when its input RelNode's max row count is less than or equal to specified row count.All of them are represented by Sort
static final SortUnionTransposeRule	SORT_UNION_TRANSPOSE	Rule that pushes a Sort past a Union.
static final SortUnionTransposeRule	SORT_UNION_TRANSPOSE_MATCH_NULL_FETCH	As SORT_UNION_TRANSPOSE, but for a Union implementation that preserves the ordering of its inputs.
static final UnionMergeRule	UNION_MERGE	Rule that flattens a Union on a Union into a single Union.
static final UnionPullUpConstantsRule	UNION_PULL_UP_CONSTANTS	Rule that pulls up constants through a Union operator.
static final UnionEliminatorRule	UNION_REMOVE	Rule that removes a Union if it has only one input.
static final UnionToDistinctRule	UNION_TO_DISTINCT	Rule that translates a distinct Union (all = false) into an Aggregate on top of a non-distinct Union (all = true).
static final ReduceExpressionsRule.WindowReduceExpressionsRule	WINDOW_REDUCE_EXPRESSIONS	Rule that reduces constants inside a LogicalWindow.

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

AGGREGATE_PROJECT_MERGE

public static final AggregateProjectMergeRule AGGREGATE_PROJECT_MERGE

Rule that recognizes an Aggregate on top of a Project and if possible aggregates through the Project or removes the Project.

AGGREGATE_PROJECT_PULL_UP_CONSTANTS

public static final AggregateProjectPullUpConstantsRule AGGREGATE_PROJECT_PULL_UP_CONSTANTS

Rule that removes constant keys from an Aggregate.

AGGREGATE_ANY_PULL_UP_CONSTANTS

public static final AggregateProjectPullUpConstantsRule AGGREGATE_ANY_PULL_UP_CONSTANTS

More general form of AGGREGATE_PROJECT_PULL_UP_CONSTANTS that matches any relational expression.

AGGREGATE_STAR_TABLE

public static final AggregateStarTableRule AGGREGATE_STAR_TABLE

Rule that matches an Aggregate on a StarTable.StarTableScan.

AGGREGATE_PROJECT_STAR_TABLE

public static final AggregateProjectStarTableRule AGGREGATE_PROJECT_STAR_TABLE

Variant of AGGREGATE_STAR_TABLE that accepts a Project between the Aggregate and its StarTable.StarTableScan input.

AGGREGATE_REDUCE_FUNCTIONS

public static final AggregateReduceFunctionsRule AGGREGATE_REDUCE_FUNCTIONS

Rule that reduces aggregate functions in an Aggregate to simpler forms.

AGGREGATE_MERGE

public static final AggregateMergeRule AGGREGATE_MERGE

Rule that matches an Aggregate on an Aggregate, and merges into a single Aggregate if the top aggregate's group key is a subset of the lower aggregate's group key, and the aggregates are expansions of rollups.

AGGREGATE_REMOVE

public static final AggregateRemoveRule AGGREGATE_REMOVE

Rule that removes an Aggregate if it computes no aggregate functions (that is, it is implementing SELECT DISTINCT), or all the aggregate functions are splittable, and the underlying relational expression is already distinct.

AGGREGATE_EXPAND_DISTINCT_AGGREGATES

public static final AggregateExpandDistinctAggregatesRule AGGREGATE_EXPAND_DISTINCT_AGGREGATES

Rule that expands distinct aggregates (such as COUNT(DISTINCT x)) from a Aggregate. This instance operates only on logical expressions.

AGGREGATE_EXPAND_DISTINCT_AGGREGATES_TO_JOIN

public static final AggregateExpandDistinctAggregatesRule AGGREGATE_EXPAND_DISTINCT_AGGREGATES_TO_JOIN

As AGGREGATE_EXPAND_DISTINCT_AGGREGATES but generates a Join.

AGGREGATE_EXPAND_WITHIN_DISTINCT

public static final AggregateExpandWithinDistinctRule AGGREGATE_EXPAND_WITHIN_DISTINCT

Rule that rewrites a LogicalAggregate that contains WITHIN DISTINCT aggregate functions to one that does not.

AGGREGATE_FILTER_TRANSPOSE

public static final AggregateFilterTransposeRule AGGREGATE_FILTER_TRANSPOSE

Rule that matches an Aggregate on a Filter and transposes them, pushing the aggregate below the filter.

AGGREGATE_JOIN_JOIN_REMOVE

public static final AggregateJoinJoinRemoveRule AGGREGATE_JOIN_JOIN_REMOVE

Rule that matches an Aggregate on a Join and removes the left input of the join provided that the left input is also a left join if possible.

AGGREGATE_JOIN_REMOVE

public static final AggregateJoinRemoveRule AGGREGATE_JOIN_REMOVE

Rule that matches an Aggregate on a Join and removes the join provided that the join is a left join or right join and it computes no aggregate functions or all the aggregate calls have distinct.

AGGREGATE_JOIN_TRANSPOSE

public static final AggregateJoinTransposeRule AGGREGATE_JOIN_TRANSPOSE

Rule that pushes an Aggregate past a Join.

AGGREGATE_JOIN_TRANSPOSE_EXTENDED

public static final AggregateJoinTransposeRule AGGREGATE_JOIN_TRANSPOSE_EXTENDED

As AGGREGATE_JOIN_TRANSPOSE, but extended to push down aggregate functions.

AGGREGATE_UNION_TRANSPOSE

public static final AggregateUnionTransposeRule AGGREGATE_UNION_TRANSPOSE

Rule that pushes an Aggregate past a non-distinct Union.

AGGREGATE_UNION_AGGREGATE

public static final AggregateUnionAggregateRule AGGREGATE_UNION_AGGREGATE

Rule that matches an Aggregate whose input is a Union one of whose inputs is an Aggregate.

Because it matches RelNode for each input of Union, it will create O(N ^ 2) matches, which may cost too much during the popMatch phase in VolcanoPlanner. If efficiency is a concern, we recommend that you use AGGREGATE_UNION_AGGREGATE_FIRST and AGGREGATE_UNION_AGGREGATE_SECOND instead.

AGGREGATE_UNION_AGGREGATE_FIRST

public static final AggregateUnionAggregateRule AGGREGATE_UNION_AGGREGATE_FIRST

As AGGREGATE_UNION_AGGREGATE, but matches an Aggregate only as the left input of the Union.

AGGREGATE_UNION_AGGREGATE_SECOND

public static final AggregateUnionAggregateRule AGGREGATE_UNION_AGGREGATE_SECOND

As AGGREGATE_UNION_AGGREGATE, but matches an Aggregate only as the right input of the Union.

AGGREGATE_CASE_TO_FILTER

public static final AggregateCaseToFilterRule AGGREGATE_CASE_TO_FILTER

Rule that converts CASE-style filtered aggregates into true filtered aggregates.

CALC_MERGE

public static final CalcMergeRule CALC_MERGE

Rule that merges a Calc onto a Calc.

CALC_REMOVE

public static final CalcRemoveRule CALC_REMOVE

Rule that removes a trivial LogicalCalc.

CALC_REDUCE_DECIMALS

public static final ReduceDecimalsRule CALC_REDUCE_DECIMALS

Rule that reduces operations on the DECIMAL type, such as casts or arithmetic, into operations involving more primitive types such as BIGINT and DOUBLE.

CALC_REDUCE_EXPRESSIONS

public static final ReduceExpressionsRule.CalcReduceExpressionsRule CALC_REDUCE_EXPRESSIONS

Rule that reduces constants inside a LogicalCalc.

See Also:

• FILTER_REDUCE_EXPRESSIONS

CALC_SPLIT

public static final CalcSplitRule CALC_SPLIT

Rule that converts a Calc to a Project and Filter.

CALC_TO_WINDOW

public static final ProjectToWindowRule.CalcToWindowRule CALC_TO_WINDOW

Rule that transforms a Calc that contains windowed aggregates to a mixture of LogicalWindow and Calc.

COERCE_INPUTS

public static final CoerceInputsRule COERCE_INPUTS

Rule that pre-casts inputs to a particular type. This can assist operator implementations that impose requirements on their input types.

EXCHANGE_REMOVE_CONSTANT_KEYS

public static final ExchangeRemoveConstantKeysRule EXCHANGE_REMOVE_CONSTANT_KEYS

Rule that removes constants inside a LogicalExchange.

SORT_EXCHANGE_REMOVE_CONSTANT_KEYS

public static final ExchangeRemoveConstantKeysRule SORT_EXCHANGE_REMOVE_CONSTANT_KEYS

Rule that removes constants inside a LogicalSortExchange.

FILTER_INTO_JOIN

public static final FilterJoinRule.FilterIntoJoinRule FILTER_INTO_JOIN

Rule that tries to push filter expressions into a join condition and into the inputs of the join.

FILTER_INTO_JOIN_DUMB

public static final FilterJoinRule.FilterIntoJoinRule FILTER_INTO_JOIN_DUMB

Dumber version of FILTER_INTO_JOIN. Not intended for production use, but keeps some tests working for which FILTER_INTO_JOIN is too smart.

FILTER_MERGE

public static final FilterMergeRule FILTER_MERGE

Rule that combines two LogicalFilters.

FILTER_CALC_MERGE

public static final FilterCalcMergeRule FILTER_CALC_MERGE

Rule that merges a Filter and a LogicalCalc. The result is a LogicalCalc whose filter condition is the logical AND of the two.

See Also:

• PROJECT_CALC_MERGE

FILTER_TO_CALC

public static final FilterToCalcRule FILTER_TO_CALC

Rule that converts a LogicalFilter to a LogicalCalc.

See Also:

• PROJECT_TO_CALC

FILTER_AGGREGATE_TRANSPOSE

public static final FilterAggregateTransposeRule FILTER_AGGREGATE_TRANSPOSE

Rule that pushes a Filter past an Aggregate.

See Also:

• AGGREGATE_FILTER_TRANSPOSE

FILTER_PROJECT_TRANSPOSE

public static final FilterProjectTransposeRule FILTER_PROJECT_TRANSPOSE

The default instance of FilterProjectTransposeRule.

It does not allow a Filter to be pushed past the Project if there is a correlation condition) anywhere in the Filter, since in some cases it can prevent a Correlate from being de-correlated.

FILTER_SAMPLE_TRANSPOSE

public static final FilterSampleTransposeRule FILTER_SAMPLE_TRANSPOSE

Rule that pushes a Filter past a Sample.

FILTER_TABLE_FUNCTION_TRANSPOSE

public static final FilterTableFunctionTransposeRule FILTER_TABLE_FUNCTION_TRANSPOSE

Rule that pushes a LogicalFilter past a LogicalTableFunctionScan.

FILTER_SCAN

public static final FilterTableScanRule FILTER_SCAN

Rule that matches a Filter on a TableScan.

FILTER_INTERPRETER_SCAN

public static final FilterTableScanRule FILTER_INTERPRETER_SCAN

Rule that matches a Filter on an EnumerableInterpreter on a TableScan.

FILTER_CORRELATE

public static final FilterCorrelateRule FILTER_CORRELATE

Rule that pushes a Filter above a Correlate into the inputs of the Correlate.

FILTER_MULTI_JOIN_MERGE

public static final FilterMultiJoinMergeRule FILTER_MULTI_JOIN_MERGE

Rule that merges a Filter into a MultiJoin, creating a richer MultiJoin.

See Also:

• PROJECT_MULTI_JOIN_MERGE

FILTER_EXPAND_IS_NOT_DISTINCT_FROM

public static final FilterRemoveIsNotDistinctFromRule FILTER_EXPAND_IS_NOT_DISTINCT_FROM

Rule that replaces IS NOT DISTINCT FROM in a Filter with logically equivalent operations.

FILTER_SET_OP_TRANSPOSE

public static final FilterSetOpTransposeRule FILTER_SET_OP_TRANSPOSE

Rule that pushes a Filter past a SetOp.

FILTER_WINDOW_TRANSPOSE

public static final FilterWindowTransposeRule FILTER_WINDOW_TRANSPOSE

Rule that pushes a Filter past a Window.

FILTER_REDUCE_EXPRESSIONS

public static final ReduceExpressionsRule.FilterReduceExpressionsRule FILTER_REDUCE_EXPRESSIONS

Rule that reduces constants inside a LogicalFilter.

See Also:

• JOIN_REDUCE_EXPRESSIONS
• PROJECT_REDUCE_EXPRESSIONS
• CALC_REDUCE_EXPRESSIONS
• WINDOW_REDUCE_EXPRESSIONS

INTERSECT_MERGE

public static final UnionMergeRule INTERSECT_MERGE

Rule that flattens an Intersect on an Intersect into a single Intersect.

INTERSECT_TO_DISTINCT

public static final IntersectToDistinctRule INTERSECT_TO_DISTINCT

Rule that translates a distinct Intersect into a group of operators composed of Union, Aggregate, etc.

MINUS_TO_DISTINCT

public static final MinusToDistinctRule MINUS_TO_DISTINCT

Rule that translates a distinct Minus into a group of operators composed of Union, Aggregate, etc.

MATCH

public static final MatchRule MATCH

Rule that converts a LogicalMatch to the result of calling LogicalMatch.copy(org.apache.calcite.plan.RelTraitSet, java.util.List<org.apache.calcite.rel.RelNode>).

MINUS_MERGE

public static final UnionMergeRule MINUS_MERGE

Rule that flattens a Minus on a Minus into a single Minus.

PROJECT_AGGREGATE_MERGE

public static final ProjectAggregateMergeRule PROJECT_AGGREGATE_MERGE

Rule that matches a Project on an Aggregate, projecting away aggregate calls that are not used.

PROJECT_CALC_MERGE

public static final ProjectCalcMergeRule PROJECT_CALC_MERGE

Rule that merges a LogicalProject and a LogicalCalc.

See Also:

• FILTER_CALC_MERGE

PROJECT_CORRELATE_TRANSPOSE

public static final ProjectCorrelateTransposeRule PROJECT_CORRELATE_TRANSPOSE

Rule that matches a Project on a Correlate and pushes the projections to the Correlate's left and right inputs.

PROJECT_FILTER_TRANSPOSE

public static final ProjectFilterTransposeRule PROJECT_FILTER_TRANSPOSE

Rule that pushes a Project past a Filter.

See Also:

• PROJECT_FILTER_TRANSPOSE_WHOLE_PROJECT_EXPRESSIONS
• PROJECT_FILTER_TRANSPOSE_WHOLE_EXPRESSIONS

PROJECT_FILTER_TRANSPOSE_WHOLE_EXPRESSIONS

public static final ProjectFilterTransposeRule PROJECT_FILTER_TRANSPOSE_WHOLE_EXPRESSIONS

As PROJECT_FILTER_TRANSPOSE, but pushes down project and filter expressions whole, not field references.

PROJECT_FILTER_TRANSPOSE_WHOLE_PROJECT_EXPRESSIONS

public static final ProjectFilterTransposeRule PROJECT_FILTER_TRANSPOSE_WHOLE_PROJECT_EXPRESSIONS

As PROJECT_FILTER_TRANSPOSE, pushes down field references for filters, but pushes down project expressions whole.

PROJECT_REDUCE_EXPRESSIONS

public static final ReduceExpressionsRule.ProjectReduceExpressionsRule PROJECT_REDUCE_EXPRESSIONS

Rule that reduces constants inside a LogicalProject.

See Also:

• FILTER_REDUCE_EXPRESSIONS

PROJECT_SUB_QUERY_TO_CORRELATE

public static final SubQueryRemoveRule PROJECT_SUB_QUERY_TO_CORRELATE

Rule that converts sub-queries from project expressions into Correlate instances.

See Also:

• FILTER_SUB_QUERY_TO_CORRELATE
• JOIN_SUB_QUERY_TO_CORRELATE

FILTER_SUB_QUERY_TO_CORRELATE

public static final SubQueryRemoveRule FILTER_SUB_QUERY_TO_CORRELATE

Rule that converts a sub-queries from filter expressions into Correlate instances.

See Also:

• PROJECT_SUB_QUERY_TO_CORRELATE
• JOIN_SUB_QUERY_TO_CORRELATE

JOIN_SUB_QUERY_TO_CORRELATE

public static final SubQueryRemoveRule JOIN_SUB_QUERY_TO_CORRELATE

Rule that converts sub-queries from join expressions into Correlate instances.

See Also:

• PROJECT_SUB_QUERY_TO_CORRELATE
• FILTER_SUB_QUERY_TO_CORRELATE

PROJECT_TO_LOGICAL_PROJECT_AND_WINDOW

public static final ProjectToWindowRule.ProjectToLogicalProjectAndWindowRule PROJECT_TO_LOGICAL_PROJECT_AND_WINDOW

Rule that transforms a Project into a mixture of LogicalProject and LogicalWindow.

PROJECT_TO_SEMI_JOIN

public static final SemiJoinRule.ProjectToSemiJoinRule PROJECT_TO_SEMI_JOIN

Rule that creates a semi-join from a Project on top of a Join with an Aggregate as its right input.

See Also:

• JOIN_TO_SEMI_JOIN

PROJECT_JOIN_JOIN_REMOVE

public static final ProjectJoinJoinRemoveRule PROJECT_JOIN_JOIN_REMOVE

Rule that matches an Project on a Join and removes the left input of the join provided that the left input is also a left join.

PROJECT_JOIN_REMOVE

public static final ProjectJoinRemoveRule PROJECT_JOIN_REMOVE

Rule that matches an Project on a Join and removes the join provided that the join is a left join or right join and the join keys are unique.

PROJECT_JOIN_TRANSPOSE

public static final ProjectJoinTransposeRule PROJECT_JOIN_TRANSPOSE

Rule that pushes a LogicalProject past a LogicalJoin by splitting the projection into a projection on top of each child of the join.

PROJECT_MERGE

public static final ProjectMergeRule PROJECT_MERGE

Rule that merges a Project into another Project, provided the projects are not projecting identical sets of input references.

PROJECT_SET_OP_TRANSPOSE

public static final ProjectSetOpTransposeRule PROJECT_SET_OP_TRANSPOSE

Rule that pushes a LogicalProject past a SetOp.

The children of the SetOp will project only the RexInputRefs referenced in the original LogicalProject.

PROJECT_MULTI_JOIN_MERGE

public static final ProjectMultiJoinMergeRule PROJECT_MULTI_JOIN_MERGE

Rule that pushes a Project into a MultiJoin, creating a richer MultiJoin.

See Also:

• FILTER_MULTI_JOIN_MERGE

PROJECT_REMOVE

public static final ProjectRemoveRule PROJECT_REMOVE

Rule that, given a Project node that merely returns its input, converts the node into its input.

PROJECT_TABLE_SCAN

public static final ProjectTableScanRule PROJECT_TABLE_SCAN

Rule that converts a Project on a TableScan of a ProjectableFilterableTable to a Bindables.BindableTableScan.

See Also:

• PROJECT_INTERPRETER_TABLE_SCAN

PROJECT_INTERPRETER_TABLE_SCAN

public static final ProjectTableScanRule PROJECT_INTERPRETER_TABLE_SCAN

As PROJECT_TABLE_SCAN, but with an intervening EnumerableInterpreter.

PROJECT_TO_CALC

public static final ProjectToCalcRule PROJECT_TO_CALC

Rule that converts a LogicalProject to a LogicalCalc.

See Also:

• FILTER_TO_CALC

PROJECT_WINDOW_TRANSPOSE

public static final ProjectWindowTransposeRule PROJECT_WINDOW_TRANSPOSE

Rule that pushes a LogicalProject past a LogicalWindow.

JOIN_CONDITION_PUSH

public static final FilterJoinRule.JoinConditionPushRule JOIN_CONDITION_PUSH

Rule that pushes predicates in a Join into the inputs to the join.

JOIN_ADD_REDUNDANT_SEMI_JOIN

public static final JoinAddRedundantSemiJoinRule JOIN_ADD_REDUNDANT_SEMI_JOIN

Rule to add a semi-join into a Join.

JOIN_ASSOCIATE

public static final JoinAssociateRule JOIN_ASSOCIATE

Rule that changes a join based on the associativity rule, ((a JOIN b) JOIN c) → (a JOIN (b JOIN c)).

JOIN_COMMUTE

public static final JoinCommuteRule JOIN_COMMUTE

Rule that permutes the inputs to an inner Join.

JOIN_COMMUTE_OUTER

public static final JoinCommuteRule JOIN_COMMUTE_OUTER

As JOIN_COMMUTE but swaps outer joins as well as inner joins.

JOIN_EXTRACT_FILTER

public static final JoinExtractFilterRule JOIN_EXTRACT_FILTER

Rule to convert an inner join to a filter on top of a cartesian inner join.

JOIN_PROJECT_BOTH_TRANSPOSE

public static final JoinProjectTransposeRule JOIN_PROJECT_BOTH_TRANSPOSE

Rule that matches a LogicalJoin whose inputs are LogicalProjects, and pulls the project expressions up.

JOIN_PROJECT_LEFT_TRANSPOSE

public static final JoinProjectTransposeRule JOIN_PROJECT_LEFT_TRANSPOSE

As JOIN_PROJECT_BOTH_TRANSPOSE but only the left input is a LogicalProject.

JOIN_PROJECT_RIGHT_TRANSPOSE

public static final JoinProjectTransposeRule JOIN_PROJECT_RIGHT_TRANSPOSE

As JOIN_PROJECT_BOTH_TRANSPOSE but only the right input is a LogicalProject.

JOIN_PROJECT_BOTH_TRANSPOSE_INCLUDE_OUTER

public static final JoinProjectTransposeRule JOIN_PROJECT_BOTH_TRANSPOSE_INCLUDE_OUTER

As JOIN_PROJECT_BOTH_TRANSPOSE but match outer as well as inner join.

JOIN_PROJECT_LEFT_TRANSPOSE_INCLUDE_OUTER

public static final JoinProjectTransposeRule JOIN_PROJECT_LEFT_TRANSPOSE_INCLUDE_OUTER

As JOIN_PROJECT_LEFT_TRANSPOSE but match outer as well as inner join.

JOIN_PROJECT_RIGHT_TRANSPOSE_INCLUDE_OUTER

public static final JoinProjectTransposeRule JOIN_PROJECT_RIGHT_TRANSPOSE_INCLUDE_OUTER

As JOIN_PROJECT_RIGHT_TRANSPOSE but match outer as well as inner join.

JOIN_PUSH_EXPRESSIONS

public static final JoinPushExpressionsRule JOIN_PUSH_EXPRESSIONS

Rule that matches a Join and pushes down expressions on either side of "equal" conditions.

JOIN_PUSH_TRANSITIVE_PREDICATES

public static final JoinPushTransitivePredicatesRule JOIN_PUSH_TRANSITIVE_PREDICATES

Rule that infers predicates from on a Join and creates Filters if those predicates can be pushed to its inputs.

JOIN_DERIVE_IS_NOT_NULL_FILTER_RULE

public static final JoinDeriveIsNotNullFilterRule JOIN_DERIVE_IS_NOT_NULL_FILTER_RULE

Rule that derives IS NOT NULL predicates from a inner Join and creates Filters with those predicates as new inputs of the Join.

JOIN_REDUCE_EXPRESSIONS

public static final ReduceExpressionsRule.JoinReduceExpressionsRule JOIN_REDUCE_EXPRESSIONS

Rule that reduces constants inside a Join.

See Also:

• FILTER_REDUCE_EXPRESSIONS
• PROJECT_REDUCE_EXPRESSIONS

JOIN_ON_UNIQUE_TO_SEMI_JOIN

public static final SemiJoinRule.JoinOnUniqueToSemiJoinRule JOIN_ON_UNIQUE_TO_SEMI_JOIN

Rule that creates a semi-join from a Join, and it's right keys are unique in its right input.

JOIN_TO_CORRELATE

public static final JoinToCorrelateRule JOIN_TO_CORRELATE

Rule that converts a LogicalJoin into a LogicalCorrelate.

JOIN_TO_MULTI_JOIN

public static final JoinToMultiJoinRule JOIN_TO_MULTI_JOIN

Rule that flattens a tree of LogicalJoins into a single MultiJoin with N inputs.

JOIN_TO_SEMI_JOIN

public static final SemiJoinRule.JoinToSemiJoinRule JOIN_TO_SEMI_JOIN

Rule that creates a semi-join from a Join with an empty Aggregate as its right input.

See Also:

• PROJECT_TO_SEMI_JOIN

JOIN_LEFT_UNION_TRANSPOSE

public static final JoinUnionTransposeRule JOIN_LEFT_UNION_TRANSPOSE

Rule that pushes a Join past a non-distinct Union as its left input.

JOIN_RIGHT_UNION_TRANSPOSE

public static final JoinUnionTransposeRule JOIN_RIGHT_UNION_TRANSPOSE

Rule that pushes a Join past a non-distinct Union as its right input.

MULTI_JOIN_OPTIMIZE

public static final LoptOptimizeJoinRule MULTI_JOIN_OPTIMIZE

Rule that re-orders a Join using a heuristic planner.

It is triggered by the pattern LogicalProject (MultiJoin).

See Also:

• JOIN_TO_MULTI_JOIN
• MULTI_JOIN_OPTIMIZE_BUSHY

MULTI_JOIN_OPTIMIZE_BUSHY

public static final MultiJoinOptimizeBushyRule MULTI_JOIN_OPTIMIZE_BUSHY

Rule that finds an approximately optimal ordering for join operators using a heuristic algorithm and can handle bushy joins.

It is triggered by the pattern LogicalProject (MultiJoin).

See Also:

• MULTI_JOIN_OPTIMIZE

MULTI_JOIN_BOTH_PROJECT

public static final MultiJoinProjectTransposeRule MULTI_JOIN_BOTH_PROJECT

Rule that matches a LogicalJoin whose inputs are both a MultiJoin with intervening LogicalProjects, and pulls the Projects up above the Join.

MULTI_JOIN_LEFT_PROJECT

public static final MultiJoinProjectTransposeRule MULTI_JOIN_LEFT_PROJECT

As MULTI_JOIN_BOTH_PROJECT but only the left input has an intervening Project.

MULTI_JOIN_RIGHT_PROJECT

public static final MultiJoinProjectTransposeRule MULTI_JOIN_RIGHT_PROJECT

As MULTI_JOIN_BOTH_PROJECT but only the right input has an intervening Project.

SEMI_JOIN_FILTER_TRANSPOSE

public static final SemiJoinFilterTransposeRule SEMI_JOIN_FILTER_TRANSPOSE

Rule that pushes a semi-join down in a tree past a Filter.

See Also:

• SEMI_JOIN_PROJECT_TRANSPOSE
• SEMI_JOIN_JOIN_TRANSPOSE

SEMI_JOIN_PROJECT_TRANSPOSE

public static final SemiJoinProjectTransposeRule SEMI_JOIN_PROJECT_TRANSPOSE

Rule that pushes a semi-join down in a tree past a Project.

See Also:

• SEMI_JOIN_FILTER_TRANSPOSE
• SEMI_JOIN_JOIN_TRANSPOSE

SEMI_JOIN_JOIN_TRANSPOSE

public static final SemiJoinJoinTransposeRule SEMI_JOIN_JOIN_TRANSPOSE

Rule that pushes a semi-join down in a tree past a Join.

See Also:

• SEMI_JOIN_FILTER_TRANSPOSE
• SEMI_JOIN_PROJECT_TRANSPOSE

SEMI_JOIN_REMOVE

public static final SemiJoinRemoveRule SEMI_JOIN_REMOVE

Rule that removes a semi-join from a join tree.

SORT_UNION_TRANSPOSE

public static final SortUnionTransposeRule SORT_UNION_TRANSPOSE

Rule that pushes a Sort past a Union.

This rule instance is for a Union implementation that does not preserve the ordering of its inputs. Thus, it makes no sense to match this rule if the Sort does not have a limit, i.e., Sort.fetch is null.

See Also:

• SORT_UNION_TRANSPOSE_MATCH_NULL_FETCH

SORT_UNION_TRANSPOSE_MATCH_NULL_FETCH

public static final SortUnionTransposeRule SORT_UNION_TRANSPOSE_MATCH_NULL_FETCH

As SORT_UNION_TRANSPOSE, but for a Union implementation that preserves the ordering of its inputs. It is still worth applying this rule even if the Sort does not have a limit, for the merge of already sorted inputs that the Union can do is usually cheap.

SORT_JOIN_COPY

public static final SortJoinCopyRule SORT_JOIN_COPY

Rule that copies a Sort past a Join without its limit and offset. The original Sort is preserved but can potentially be removed by SORT_REMOVE if redundant.

SORT_REMOVE

public static final SortRemoveRule SORT_REMOVE

Rule that removes a Sort if its input is already sorted.

LIMIT_MERGE

public static final SortMergeRule LIMIT_MERGE

Rule that merge a Sort representing the Limit semantics and another Sort representing the Limit or TOPN semantics.

SORT_REMOVE_CONSTANT_KEYS

public static final SortRemoveConstantKeysRule SORT_REMOVE_CONSTANT_KEYS

Rule that removes keys from a Sort if those keys are known to be constant, or removes the entire Sort if all keys are constant.

SORT_REMOVE_REDUNDANT

public static final SortRemoveRedundantRule SORT_REMOVE_REDUNDANT

Rule that removes redundant Order By or Limit when its input RelNode's max row count is less than or equal to specified row count.All of them are represented by Sort

SORT_JOIN_TRANSPOSE

public static final SortJoinTransposeRule SORT_JOIN_TRANSPOSE

Rule that pushes a Sort past a Join.

SORT_PROJECT_TRANSPOSE

public static final SortProjectTransposeRule SORT_PROJECT_TRANSPOSE

Rule that pushes a Sort past a Project.

UNION_MERGE

public static final UnionMergeRule UNION_MERGE

Rule that flattens a Union on a Union into a single Union.

UNION_REMOVE

public static final UnionEliminatorRule UNION_REMOVE

Rule that removes a Union if it has only one input.

See Also:

• PruneEmptyRules.UNION_INSTANCE

UNION_PULL_UP_CONSTANTS

public static final UnionPullUpConstantsRule UNION_PULL_UP_CONSTANTS

Rule that pulls up constants through a Union operator.

UNION_TO_DISTINCT

public static final UnionToDistinctRule UNION_TO_DISTINCT

Rule that translates a distinct Union (all = false) into an Aggregate on top of a non-distinct Union (all = true).

SAMPLE_TO_FILTER

public static final SampleToFilterRule SAMPLE_TO_FILTER

Rule that rewrite Sample which is bernoulli to the Filter.

AGGREGATE_VALUES

public static final AggregateValuesRule AGGREGATE_VALUES

Rule that applies an Aggregate to a Values (currently just an empty Values).

FILTER_VALUES_MERGE

public static final ValuesReduceRule FILTER_VALUES_MERGE

Rule that merges a Filter onto an underlying LogicalValues, resulting in a Values with potentially fewer rows.

PROJECT_VALUES_MERGE

public static final ValuesReduceRule PROJECT_VALUES_MERGE

Rule that merges a Project onto an underlying LogicalValues, resulting in a Values with different columns.

PROJECT_FILTER_VALUES_MERGE

public static final ValuesReduceRule PROJECT_FILTER_VALUES_MERGE

Rule that merges a Project on top of a Filter onto an underlying LogicalValues, resulting in a Values with different columns and potentially fewer rows.

WINDOW_REDUCE_EXPRESSIONS

public static final ReduceExpressionsRule.WindowReduceExpressionsRule WINDOW_REDUCE_EXPRESSIONS

Rule that reduces constants inside a LogicalWindow.

See Also:

• FILTER_REDUCE_EXPRESSIONS