Struct Cardinality Visitor &nbsp; Copy item path

impl CardinalityVisitor

fn visit_predicate( input: &dyn LogicalPlanNode, input_card: Cardinality, eq_set: HashSet<usize>, ) -> Cardinality

Used for Filter and Scan with predicate.

fn fixed_columns(predicate: &Condition) -> HashSet<usize>

Returns the columns that predicate fixes to a single value:

columns compared by =, IS NOT DISTINCT FROM, or a single-item IN with a pure expression that references no input column, such as a constant, a parameter, or a correlated input ref. A row comparison such as (a, b) = (1, 2) fixes its columns field by field.
boolean columns used as a conjunction directly or through NOT, IS TRUE, or IS FALSE, such as WHERE flag.

Other conjunctions, such as pk > 1, pk = other_col, or pk = 1 OR pk = 2, can keep several rows even when they reference every unique key column, so they are ignored.

fn collect_equality_fixed_columns( lhs: &ExprImpl, rhs: &ExprImpl, fixed: &mut HashSet<usize>, )

Collects the columns that lhs = rhs fixes. When both sides are rows, each pair of fields is compared on its own.

fn collect_operand_columns(expr: &ExprImpl, fixed: &mut HashSet<usize>)

Collects the columns of an operand that is equal to a fixed value: the column itself, a lossless cast of it, or each such field of a row, as in ROW(a, b) = '(1,2)'.

fn row_fields(expr: &ExprImpl) -> Option<&[ExprImpl]>

fn as_injective_input_ref(expr: &ExprImpl) -> Option<usize>

Returns the column referenced by expr if expr is the column itself or a lossless cast of it, so that equal results imply equal column values. Such casts come from comparing columns of different numeric types, e.g. CAST(int_pk AS DECIMAL) = 1.5 or CAST(int_pk AS BIGINT) = bigint_col.

Trait Implementations§

impl LogicalPlanVisitor for CardinalityVisitor

type Result = Cardinality

type DefaultBehavior = impl DefaultBehavior<<CardinalityVisitor as LogicalPlanVisitor>::Result>

fn default_behavior() -> Self::DefaultBehavior

The behavior for the default implementations of visit_xxx.

fn visit_logical_values(&mut self, plan: &LogicalValues) -> Cardinality

Visit LogicalValues , the function should visit the inputs.

fn visit_logical_share(&mut self, plan: &LogicalShare) -> Cardinality

Visit LogicalShare , the function should visit the inputs.

fn visit_logical_dedup(&mut self, plan: &LogicalDedup) -> Cardinality

Visit LogicalDedup , the function should visit the inputs.

fn visit_logical_over_window( &mut self, plan: &LogicalOverWindow, ) -> Self::Result

Visit LogicalOverWindow , the function should visit the inputs.

fn visit_logical_agg(&mut self, plan: &LogicalAgg) -> Cardinality

Visit LogicalAgg , the function should visit the inputs.

fn visit_logical_limit(&mut self, plan: &LogicalLimit) -> Cardinality

Visit LogicalLimit , the function should visit the inputs.

fn visit_logical_max_one_row(&mut self, plan: &LogicalMaxOneRow) -> Cardinality

Visit LogicalMaxOneRow , the function should visit the inputs.

fn visit_logical_project(&mut self, plan: &LogicalProject) -> Cardinality

Visit LogicalProject , the function should visit the inputs.

fn visit_logical_top_n(&mut self, plan: &LogicalTopN) -> Cardinality

Visit LogicalTopN , the function should visit the inputs.

fn visit_logical_filter(&mut self, plan: &LogicalFilter) -> Cardinality

Visit LogicalFilter , the function should visit the inputs.

fn visit_logical_scan(&mut self, plan: &LogicalScan) -> Cardinality

Visit LogicalScan , the function should visit the inputs.

fn visit_logical_union(&mut self, plan: &LogicalUnion) -> Cardinality

Visit LogicalUnion , the function should visit the inputs.

fn visit_logical_join(&mut self, plan: &LogicalJoin) -> Cardinality

Visit LogicalJoin , the function should visit the inputs.

fn visit_logical_apply(&mut self, plan: &LogicalApply) -> Cardinality

Visit LogicalApply , the function should visit the inputs.

fn visit_logical_now(&mut self, plan: &LogicalNow) -> Cardinality

Visit LogicalNow , the function should visit the inputs.

fn visit_logical_expand(&mut self, plan: &LogicalExpand) -> Cardinality

Visit LogicalExpand , the function should visit the inputs.

fn visit_logical(&mut self, plan: PlanRef<Logical>) -> Self::Result

fn visit_logical_cdc_scan(&mut self, plan: &LogicalCdcScan) -> Self::Result

Visit LogicalCdcScan , the function should visit the inputs.

fn visit_logical_sys_scan(&mut self, plan: &LogicalSysScan) -> Self::Result

Visit LogicalSysScan , the function should visit the inputs.

fn visit_logical_source(&mut self, plan: &LogicalSource) -> Self::Result

Visit LogicalSource , the function should visit the inputs.

fn visit_logical_insert(&mut self, plan: &LogicalInsert) -> Self::Result

Visit LogicalInsert , the function should visit the inputs.

fn visit_logical_delete(&mut self, plan: &LogicalDelete) -> Self::Result

Visit LogicalDelete , the function should visit the inputs.

fn visit_logical_update(&mut self, plan: &LogicalUpdate) -> Self::Result

Visit LogicalUpdate , the function should visit the inputs.

fn visit_logical_hop_window(&mut self, plan: &LogicalHopWindow) -> Self::Result

Visit LogicalHopWindow , the function should visit the inputs.

fn visit_logical_table_function( &mut self, plan: &LogicalTableFunction, ) -> Self::Result

Visit LogicalTableFunction , the function should visit the inputs.

fn visit_logical_multi_join(&mut self, plan: &LogicalMultiJoin) -> Self::Result

Visit LogicalMultiJoin , the function should visit the inputs.

fn visit_logical_project_set( &mut self, plan: &LogicalProjectSet, ) -> Self::Result

Visit LogicalProjectSet , the function should visit the inputs.

fn visit_logical_intersect(&mut self, plan: &LogicalIntersect) -> Self::Result

Visit LogicalIntersect , the function should visit the inputs.

fn visit_logical_except(&mut self, plan: &LogicalExcept) -> Self::Result

Visit LogicalExcept , the function should visit the inputs.

fn visit_logical_match_recognize( &mut self, plan: &LogicalMatchRecognize, ) -> Self::Result

Visit LogicalMatchRecognize , the function should visit the inputs.

fn visit_logical_kafka_scan(&mut self, plan: &LogicalKafkaScan) -> Self::Result

Visit LogicalKafkaScan , the function should visit the inputs.

fn visit_logical_iceberg_scan( &mut self, plan: &LogicalIcebergScan, ) -> Self::Result

Visit LogicalIcebergScan , the function should visit the inputs.

fn visit_logical_iceberg_metadata_scan( &mut self, plan: &LogicalIcebergMetadataScan, ) -> Self::Result

Visit LogicalIcebergMetadataScan , the function should visit the inputs.

fn visit_logical_iceberg_intermediate_scan( &mut self, plan: &LogicalIcebergIntermediateScan, ) -> Self::Result

Visit LogicalIcebergIntermediateScan , the function should visit the inputs.

fn visit_logical_change_log(&mut self, plan: &LogicalChangeLog) -> Self::Result

Visit LogicalChangeLog , the function should visit the inputs.

fn visit_logical_file_scan(&mut self, plan: &LogicalFileScan) -> Self::Result

Visit LogicalFileScan , the function should visit the inputs.

fn visit_logical_postgres_query( &mut self, plan: &LogicalPostgresQuery, ) -> Self::Result

Visit LogicalPostgresQuery , the function should visit the inputs.

fn visit_logical_my_sql_query( &mut self, plan: &LogicalMySqlQuery, ) -> Self::Result

Visit LogicalMySqlQuery , the function should visit the inputs.

fn visit_logical_mssql_query( &mut self, plan: &LogicalMssqlQuery, ) -> Self::Result

Visit LogicalMssqlQuery , the function should visit the inputs.

fn visit_logical_gap_fill(&mut self, plan: &LogicalGapFill) -> Self::Result

Visit LogicalGapFill , the function should visit the inputs.

fn visit_logical_vector_search( &mut self, plan: &LogicalVectorSearch, ) -> Self::Result

Visit LogicalVectorSearch , the function should visit the inputs.

fn visit_logical_get_channel_delta_stats( &mut self, plan: &LogicalGetChannelDeltaStats, ) -> Self::Result

Visit LogicalGetChannelDeltaStats , the function should visit the inputs.

fn visit_logical_locality_provider( &mut self, plan: &LogicalLocalityProvider, ) -> Self::Result

Visit LogicalLocalityProvider , the function should visit the inputs.

fn visit_logical_vector_search_lookup_join( &mut self, plan: &LogicalVectorSearchLookupJoin, ) -> Self::Result

Visit LogicalVectorSearchLookupJoin , the function should visit the inputs.

Auto Trait Implementations§

impl UnwindSafe for CardinalityVisitor

Blanket Implementations§

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