EquivalenceClass Struct Reference

#include <relation.h>

Data Fields
NodeTag	type
List *	ec_opfamilies
Oid	ec_collation
List *	ec_members
List *	ec_sources
List *	ec_derives
Relids	ec_relids
bool	ec_has_const
bool	ec_has_volatile
bool	ec_below_outer_join
bool	ec_broken
Index	ec_sortref
struct EquivalenceClass *	ec_merged

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Detailed Description

Definition at line 567 of file relation.h.

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Field Documentation

bool EquivalenceClass::ec_below_outer_join

Definition at line 579 of file relation.h.

Referenced by generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), get_eclass_for_sort_expr(), and process_equivalence().

bool EquivalenceClass::ec_broken

Definition at line 580 of file relation.h.

Referenced by generate_base_implied_equalities(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), generate_join_implied_equalities(), generate_join_implied_equalities_normal(), get_eclass_for_sort_expr(), and process_equivalence().

Oid EquivalenceClass::ec_collation

Definition at line 572 of file relation.h.

Referenced by cached_scansel(), convert_subquery_pathkeys(), create_join_clause(), create_mergejoin_plan(), ec_member_matches_indexcol(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), get_eclass_for_sort_expr(), initial_cost_mergejoin(), prepare_sort_from_pathkeys(), process_equivalence(), reconsider_full_join_clause(), and reconsider_outer_join_clause().

List* EquivalenceClass::ec_derives

Definition at line 575 of file relation.h.

Referenced by create_join_clause(), get_eclass_for_sort_expr(), and process_equivalence().

bool EquivalenceClass::ec_has_const

Definition at line 577 of file relation.h.

Referenced by add_eq_member(), eclass_useful_for_merging(), generate_base_implied_equalities(), generate_base_implied_equalities_broken(), generate_implied_equalities_for_column(), generate_join_implied_equalities(), get_eclass_for_sort_expr(), process_equivalence(), reconsider_full_join_clause(), and reconsider_outer_join_clause().

bool EquivalenceClass::ec_has_volatile

Definition at line 578 of file relation.h.

Referenced by add_child_rel_equivalences(), convert_subquery_pathkeys(), exprs_known_equal(), get_eclass_for_sort_expr(), match_pathkeys_to_index(), prepare_sort_from_pathkeys(), process_equivalence(), reconsider_full_join_clause(), and reconsider_outer_join_clause().

List* EquivalenceClass::ec_members

Definition at line 573 of file relation.h.

Referenced by add_child_rel_equivalences(), add_eq_member(), convert_subquery_pathkeys(), eclass_useful_for_merging(), exprs_known_equal(), find_ec_member_for_tle(), generate_base_implied_equalities(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), generate_implied_equalities_for_column(), generate_join_implied_equalities(), generate_join_implied_equalities_normal(), get_eclass_for_sort_expr(), has_relevant_eclass_joinclause(), have_relevant_eclass_joinclause(), match_pathkeys_to_index(), mutate_eclass_expressions(), prepare_sort_from_pathkeys(), print_pathkeys(), process_equivalence(), reconsider_full_join_clause(), reconsider_outer_join_clause(), and select_outer_pathkeys_for_merge().

struct EquivalenceClass* EquivalenceClass::ec_merged

Definition at line 582 of file relation.h.

Referenced by _outEquivalenceClass(), eclass_useful_for_merging(), generate_base_implied_equalities(), get_eclass_for_sort_expr(), make_canonical_pathkey(), print_pathkeys(), process_equivalence(), and update_mergeclause_eclasses().

List* EquivalenceClass::ec_opfamilies

Definition at line 571 of file relation.h.

Referenced by convert_subquery_pathkeys(), ec_member_matches_indexcol(), get_eclass_for_sort_expr(), process_equivalence(), reconsider_full_join_clause(), reconsider_outer_join_clause(), select_equality_operator(), and select_outer_pathkeys_for_merge().

Relids EquivalenceClass::ec_relids

Definition at line 576 of file relation.h.

Referenced by add_child_rel_equivalences(), add_eq_member(), eclass_useful_for_merging(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), generate_implied_equalities_for_column(), generate_join_implied_equalities(), get_eclass_for_sort_expr(), has_relevant_eclass_joinclause(), have_relevant_eclass_joinclause(), and process_equivalence().

Index EquivalenceClass::ec_sortref

Definition at line 581 of file relation.h.

Referenced by convert_subquery_pathkeys(), get_eclass_for_sort_expr(), prepare_sort_from_pathkeys(), and process_equivalence().

List* EquivalenceClass::ec_sources

Definition at line 574 of file relation.h.

Referenced by create_join_clause(), generate_base_implied_equalities_broken(), generate_base_implied_equalities_const(), generate_join_implied_equalities_broken(), get_eclass_for_sort_expr(), and process_equivalence().

NodeTag EquivalenceClass::type

Definition at line 569 of file relation.h.

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

• src/include/nodes/relation.h