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91f33a2ae9
For a long time, PostgreSQL has had a get_relation_info_hook which
plugins can use to editorialize on the information that
get_relation_info obtains from the catalogs. However, this hook is
only called for baserels of type RTE_RELATION, and there is
potential utility in a similar call back for other types of
RTEs. This might have had utility even before commit
4020b370f2 added pgs_mask to
RelOptInfo, but it certainly has utility now.
So, move the callback up one level, deleting get_relation_info_hook and
adding build_simple_rel_hook instead. The new callback is called just
slightly later than before and with slightly different arguments, but it
should be fairly straightforward to adjust existing code that currently
uses get_relation_info_hook: the values previously available as
relationObjectId and inhparent are now available via rte->relid and
rte->inh, and calls where rte->rtekind != RTE_RELATION can be ignored if
desired.
Reviewed-by: Alexandra Wang <alexandra.wang.oss@gmail.com>
Discussion: http://postgr.es/m/CA%2BTgmoYg8uUWyco7Pb3HYLMBRQoO6Zh9hwgm27V39Pb6Pdf%3Dug%40mail.gmail.com
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* plancat.h
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* prototypes for plancat.c.
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*
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*
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* Portions Copyright (c) 1996-2026, 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/plancat.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PLANCAT_H
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#define PLANCAT_H
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#include "nodes/pathnodes.h"
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#include "utils/relcache.h"
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extern void get_relation_info(PlannerInfo *root, Oid relationObjectId,
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bool inhparent, RelOptInfo *rel);
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extern void get_relation_notnullatts(PlannerInfo *root, Relation relation);
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extern Bitmapset *find_relation_notnullatts(PlannerInfo *root, Oid relid);
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extern List *infer_arbiter_indexes(PlannerInfo *root);
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extern void estimate_rel_size(Relation rel, int32 *attr_widths,
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BlockNumber *pages, double *tuples, double *allvisfrac);
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extern int32 get_rel_data_width(Relation rel, int32 *attr_widths);
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extern int32 get_relation_data_width(Oid relid, int32 *attr_widths);
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extern bool relation_excluded_by_constraints(PlannerInfo *root,
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RelOptInfo *rel, RangeTblEntry *rte);
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extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
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extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
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extern Selectivity restriction_selectivity(PlannerInfo *root,
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Oid operatorid,
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List *args,
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Oid inputcollid,
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int varRelid);
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extern Selectivity join_selectivity(PlannerInfo *root,
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Oid operatorid,
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List *args,
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Oid inputcollid,
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JoinType jointype,
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SpecialJoinInfo *sjinfo);
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extern Selectivity function_selectivity(PlannerInfo *root,
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Oid funcid,
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List *args,
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Oid inputcollid,
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bool is_join,
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int varRelid,
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JoinType jointype,
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SpecialJoinInfo *sjinfo);
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extern void add_function_cost(PlannerInfo *root, Oid funcid, Node *node,
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QualCost *cost);
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extern double get_function_rows(PlannerInfo *root, Oid funcid, Node *node);
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extern bool has_row_triggers(PlannerInfo *root, Index rti, CmdType event);
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extern bool has_transition_tables(PlannerInfo *root, Index rti, CmdType event);
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extern bool has_stored_generated_columns(PlannerInfo *root, Index rti);
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extern Bitmapset *get_dependent_generated_columns(PlannerInfo *root, Index rti,
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Bitmapset *target_cols);
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#endif /* PLANCAT_H */
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