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173 lines
6.2 KiB
173 lines
6.2 KiB
/*-------------------------------------------------------------------------
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*
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* pathnode.h
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* prototypes for pathnode.c, relnode.c.
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*
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*
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* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/optimizer/pathnode.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PATHNODE_H
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#define PATHNODE_H
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#include "nodes/relation.h"
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/*
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* prototypes for pathnode.c
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*/
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extern int compare_path_costs(Path *path1, Path *path2,
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CostSelector criterion);
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extern int compare_fractional_path_costs(Path *path1, Path *path2,
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double fraction);
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extern void set_cheapest(RelOptInfo *parent_rel);
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extern void add_path(RelOptInfo *parent_rel, Path *new_path);
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extern bool add_path_precheck(RelOptInfo *parent_rel,
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Cost startup_cost, Cost total_cost,
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List *pathkeys, Relids required_outer);
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extern Path *create_seqscan_path(PlannerInfo *root, RelOptInfo *rel,
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Relids required_outer, int nworkers);
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extern Path *create_samplescan_path(PlannerInfo *root, RelOptInfo *rel,
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Relids required_outer);
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extern IndexPath *create_index_path(PlannerInfo *root,
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IndexOptInfo *index,
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List *indexclauses,
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List *indexclausecols,
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List *indexorderbys,
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List *indexorderbycols,
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List *pathkeys,
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ScanDirection indexscandir,
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bool indexonly,
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Relids required_outer,
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double loop_count);
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extern BitmapHeapPath *create_bitmap_heap_path(PlannerInfo *root,
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RelOptInfo *rel,
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Path *bitmapqual,
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Relids required_outer,
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double loop_count);
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extern BitmapAndPath *create_bitmap_and_path(PlannerInfo *root,
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RelOptInfo *rel,
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List *bitmapquals);
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extern BitmapOrPath *create_bitmap_or_path(PlannerInfo *root,
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RelOptInfo *rel,
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List *bitmapquals);
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extern TidPath *create_tidscan_path(PlannerInfo *root, RelOptInfo *rel,
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List *tidquals, Relids required_outer);
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extern AppendPath *create_append_path(RelOptInfo *rel, List *subpaths,
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Relids required_outer);
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extern MergeAppendPath *create_merge_append_path(PlannerInfo *root,
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RelOptInfo *rel,
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List *subpaths,
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List *pathkeys,
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Relids required_outer);
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extern ResultPath *create_result_path(List *quals);
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extern MaterialPath *create_material_path(RelOptInfo *rel, Path *subpath);
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extern UniquePath *create_unique_path(PlannerInfo *root, RelOptInfo *rel,
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Path *subpath, SpecialJoinInfo *sjinfo);
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extern GatherPath *create_gather_path(PlannerInfo *root,
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RelOptInfo *rel, Path *subpath, Relids required_outer,
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int nworkers);
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extern Path *create_subqueryscan_path(PlannerInfo *root, RelOptInfo *rel,
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List *pathkeys, Relids required_outer);
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extern Path *create_functionscan_path(PlannerInfo *root, RelOptInfo *rel,
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List *pathkeys, Relids required_outer);
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extern Path *create_valuesscan_path(PlannerInfo *root, RelOptInfo *rel,
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Relids required_outer);
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extern Path *create_ctescan_path(PlannerInfo *root, RelOptInfo *rel,
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Relids required_outer);
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extern Path *create_worktablescan_path(PlannerInfo *root, RelOptInfo *rel,
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Relids required_outer);
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extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel,
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double rows, Cost startup_cost, Cost total_cost,
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List *pathkeys,
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Relids required_outer,
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Path *fdw_outerpath,
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List *fdw_private);
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extern Relids calc_nestloop_required_outer(Path *outer_path, Path *inner_path);
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extern Relids calc_non_nestloop_required_outer(Path *outer_path, Path *inner_path);
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extern NestPath *create_nestloop_path(PlannerInfo *root,
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RelOptInfo *joinrel,
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JoinType jointype,
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JoinCostWorkspace *workspace,
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SpecialJoinInfo *sjinfo,
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SemiAntiJoinFactors *semifactors,
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Path *outer_path,
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Path *inner_path,
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List *restrict_clauses,
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List *pathkeys,
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Relids required_outer);
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extern MergePath *create_mergejoin_path(PlannerInfo *root,
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RelOptInfo *joinrel,
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JoinType jointype,
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JoinCostWorkspace *workspace,
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SpecialJoinInfo *sjinfo,
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Path *outer_path,
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Path *inner_path,
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List *restrict_clauses,
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List *pathkeys,
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Relids required_outer,
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List *mergeclauses,
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List *outersortkeys,
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List *innersortkeys);
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extern HashPath *create_hashjoin_path(PlannerInfo *root,
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RelOptInfo *joinrel,
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JoinType jointype,
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JoinCostWorkspace *workspace,
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SpecialJoinInfo *sjinfo,
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SemiAntiJoinFactors *semifactors,
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Path *outer_path,
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Path *inner_path,
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List *restrict_clauses,
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Relids required_outer,
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List *hashclauses);
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extern Path *reparameterize_path(PlannerInfo *root, Path *path,
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Relids required_outer,
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double loop_count);
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/*
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* prototypes for relnode.c
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*/
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extern void setup_simple_rel_arrays(PlannerInfo *root);
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extern RelOptInfo *build_simple_rel(PlannerInfo *root, int relid,
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RelOptKind reloptkind);
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extern RelOptInfo *find_base_rel(PlannerInfo *root, int relid);
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extern RelOptInfo *find_join_rel(PlannerInfo *root, Relids relids);
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extern RelOptInfo *build_join_rel(PlannerInfo *root,
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Relids joinrelids,
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RelOptInfo *outer_rel,
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RelOptInfo *inner_rel,
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SpecialJoinInfo *sjinfo,
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List **restrictlist_ptr);
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extern Relids min_join_parameterization(PlannerInfo *root,
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Relids joinrelids,
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RelOptInfo *outer_rel,
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RelOptInfo *inner_rel);
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extern RelOptInfo *build_empty_join_rel(PlannerInfo *root);
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extern AppendRelInfo *find_childrel_appendrelinfo(PlannerInfo *root,
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RelOptInfo *rel);
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extern RelOptInfo *find_childrel_top_parent(PlannerInfo *root, RelOptInfo *rel);
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extern Relids find_childrel_parents(PlannerInfo *root, RelOptInfo *rel);
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extern ParamPathInfo *get_baserel_parampathinfo(PlannerInfo *root,
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RelOptInfo *baserel,
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Relids required_outer);
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extern ParamPathInfo *get_joinrel_parampathinfo(PlannerInfo *root,
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RelOptInfo *joinrel,
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Path *outer_path,
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Path *inner_path,
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SpecialJoinInfo *sjinfo,
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Relids required_outer,
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List **restrict_clauses);
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extern ParamPathInfo *get_appendrel_parampathinfo(RelOptInfo *appendrel,
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Relids required_outer);
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#endif /* PATHNODE_H */
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