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be03eb25f3
create_index_paths are not immediately discarded, but are available for subsequent planner work. This allows avoiding redundant syscache lookups in several places. Change interface to operator selectivity estimation procedures to allow faster and more flexible estimation. Initdb forced due to change of pg_proc entries for selectivity functions!
40 lines
1 KiB
C
40 lines
1 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) 1996-2001, 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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* $Id: plancat.h,v 1.23 2001/05/20 20:28:20 tgl Exp $
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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/relation.h"
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extern void get_relation_info(Oid relationObjectId,
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bool *hasindex, long *pages, double *tuples);
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extern List *find_secondary_indexes(Oid relationObjectId);
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extern List *find_inheritance_children(Oid inhparent);
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extern bool has_subclass(Oid relationId);
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extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
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extern Selectivity restriction_selectivity(Query *root,
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Oid operator,
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List *args,
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int varRelid);
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extern Selectivity join_selectivity(Query *root,
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Oid operator,
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List *args);
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#endif /* PLANCAT_H */
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