duckdb::RelationsSetToStats Struct Reference

Collaboration diagram for duckdb::RelationsSetToStats:

Public Member Functions
	RelationsSetToStats (const column_binding_set_t &column_binding_set)

Public Attributes
column_binding_set_t	equivalent_relations
idx_t	distinct_count_hll
	the estimated total domains of the equivalent relations determined using HLL
idx_t	distinct_count_no_hll
	the estimated total domains of each relation without using HLL
bool	has_distinct_count_hll
vector< optional_ptr< FilterInfo > >	filters
vector< string >	column_names

Constructor & Destructor Documentation

RelationsSetToStats()

duckdb::RelationsSetToStats::RelationsSetToStats ( const column_binding_set_t &  column_binding_set )

inlineexplicit

        : equivalent_relations(column_binding_set), distinct_count_hll(0),
          distinct_count_no_hll(NumericLimits<idx_t>::Maximum()), has_distinct_count_hll(false) {};

Member Data Documentation

equivalent_relations

column_binding_set_t duckdb::RelationsSetToStats::equivalent_relations

column binding sets that are equivalent in a join plan. if you have A.x = B.y and B.y = C.z, then one set is {A.x, B.y, C.z}.

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The documentation for this struct was generated from the following file:

• external/duckdb/duckdb.hpp