EquivalenceClass Struct Reference

#include <pathnodes.h>

Public Member Functions
	pg_node_attr (custom_read_write, no_copy_equal, no_read, no_query_jumble) NodeTag type

Data Fields
List *	ec_opfamilies
Oid	ec_collation
int	ec_childmembers_size
List *	ec_members
List **	ec_childmembers
List *	ec_sources
List *	ec_derives_list
struct derives_hash *	ec_derives_hash
Relids	ec_relids
bool	ec_has_const
bool	ec_has_volatile
bool	ec_broken
Index	ec_sortref
Index	ec_min_security
Index	ec_max_security
struct EquivalenceClass *	ec_merged

Detailed Description

Definition at line 1444 of file pathnodes.h.

Member Function Documentation

pg_node_attr()

EquivalenceClass::pg_node_attr	(	custom_read_write	,
		no_copy_equal	,
		no_read	,
		no_query_jumble
	)

Field Documentation

ec_broken

bool EquivalenceClass::ec_broken

Definition at line 1464 of file pathnodes.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_for_ecs(), generate_join_implied_equalities_normal(), get_eclass_for_sort_expr(), and process_equivalence().

ec_childmembers

List** EquivalenceClass::ec_childmembers

Definition at line 1454 of file pathnodes.h.

Referenced by add_child_eq_member(), eclass_member_iterator_next(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), get_eclass_for_sort_expr(), process_equivalence(), rebuild_eclass_attr_needed(), reconsider_full_join_clause(), reconsider_outer_join_clause(), remove_rel_from_eclass(), setup_eclass_member_iterator(), and update_eclasses().

ec_childmembers_size

int EquivalenceClass::ec_childmembers_size

Definition at line 1452 of file pathnodes.h.

Referenced by _outEquivalenceClass(), add_child_eq_member(), eclass_member_iterator_next(), get_eclass_for_sort_expr(), and process_equivalence().

ec_collation

Oid EquivalenceClass::ec_collation

Definition at line 1451 of file pathnodes.h.

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

ec_derives_hash

struct derives_hash* EquivalenceClass::ec_derives_hash

Definition at line 1457 of file pathnodes.h.

Referenced by ec_add_clause_to_derives_hash(), ec_add_derived_clause(), ec_add_derived_clauses(), ec_build_derives_hash(), ec_clear_derived_clauses(), ec_search_derived_clause_for_ems(), get_eclass_for_sort_expr(), and process_equivalence().

ec_derives_list

List* EquivalenceClass::ec_derives_list

Definition at line 1456 of file pathnodes.h.

Referenced by ec_add_derived_clause(), ec_add_derived_clauses(), ec_build_derives_hash(), ec_clear_derived_clauses(), ec_search_derived_clause_for_ems(), get_eclass_for_sort_expr(), and process_equivalence().

ec_has_const

bool EquivalenceClass::ec_has_const

Definition at line 1462 of file pathnodes.h.

Referenced by find_derived_clause_for_ec_member(), generate_base_implied_equalities(), generate_base_implied_equalities_broken(), generate_implied_equalities_for_column(), generate_join_implied_equalities(), generate_join_implied_equalities_for_ecs(), get_eclass_for_sort_expr(), get_foreign_key_join_selectivity(), make_eq_member(), match_foreign_keys_to_quals(), process_equivalence(), rebuild_eclass_attr_needed(), reconsider_full_join_clause(), and reconsider_outer_join_clause().

ec_has_volatile

bool EquivalenceClass::ec_has_volatile

Definition at line 1463 of file pathnodes.h.

Referenced by add_child_join_rel_equivalences(), add_child_rel_equivalences(), add_foreign_ordered_paths(), convert_subquery_pathkeys(), exprs_known_equal(), get_eclass_for_sort_expr(), is_foreign_pathkey(), make_unique_from_pathkeys(), match_eclasses_to_foreign_key_col(), prepare_sort_from_pathkeys(), process_equivalence(), reconsider_full_join_clause(), reconsider_outer_join_clause(), and relation_can_be_sorted_early().

ec_max_security

Index EquivalenceClass::ec_max_security

Definition at line 1467 of file pathnodes.h.

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

ec_members

List* EquivalenceClass::ec_members

Definition at line 1453 of file pathnodes.h.

Referenced by add_child_join_rel_equivalences(), add_child_rel_equivalences(), add_eq_member(), convert_subquery_pathkeys(), exprs_known_equal(), find_em_for_rel_target(), 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_for_ecs(), get_eclass_for_sort_expr(), has_relevant_eclass_joinclause(), have_relevant_eclass_joinclause(), make_unique_from_pathkeys(), match_eclasses_to_foreign_key_col(), prepare_sort_from_pathkeys(), process_equivalence(), rebuild_eclass_attr_needed(), reconsider_full_join_clause(), reconsider_outer_join_clause(), remove_rel_from_eclass(), select_outer_pathkeys_for_merge(), setup_eclass_member_iterator(), and update_eclasses().

ec_merged

struct EquivalenceClass* EquivalenceClass::ec_merged

Definition at line 1468 of file pathnodes.h.

Referenced by _outEquivalenceClass(), generate_base_implied_equalities(), get_eclass_for_sort_expr(), and process_equivalence().

ec_min_security

Index EquivalenceClass::ec_min_security

Definition at line 1466 of file pathnodes.h.

Referenced by create_join_clause(), generate_base_implied_equalities_const(), generate_base_implied_equalities_no_const(), get_eclass_for_sort_expr(), process_equivalence(), reconsider_full_join_clause(), and reconsider_outer_join_clause().

ec_opfamilies

List* EquivalenceClass::ec_opfamilies

Definition at line 1450 of file pathnodes.h.

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

ec_relids

Relids EquivalenceClass::ec_relids

Definition at line 1460 of file pathnodes.h.

Referenced by add_child_join_rel_equivalences(), add_child_rel_equivalences(), add_eq_member(), generate_base_implied_equalities(), generate_base_implied_equalities_no_const(), generate_implied_equalities_for_column(), generate_join_implied_equalities(), generate_join_implied_equalities_for_ecs(), get_eclass_for_sort_expr(), has_relevant_eclass_joinclause(), have_relevant_eclass_joinclause(), process_equivalence(), rebuild_eclass_attr_needed(), remove_rel_from_eclass(), remove_rel_from_query(), and update_eclasses().

ec_sortref

Index EquivalenceClass::ec_sortref

Definition at line 1465 of file pathnodes.h.

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

ec_sources

List* EquivalenceClass::ec_sources

Definition at line 1455 of file pathnodes.h.

Referenced by ec_search_clause_for_ems(), generate_base_implied_equalities_broken(), generate_base_implied_equalities_const(), generate_join_implied_equalities_broken(), get_eclass_for_sort_expr(), process_equivalence(), remove_rel_from_eclass(), and update_eclasses().

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

• src/include/nodes/pathnodes.h