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49ed4dd779
to index_selectivity so that it can be handed an indexqual clause list rather than a bunch of assorted derivative data.
62 lines
1.8 KiB
C
62 lines
1.8 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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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: plancat.h,v 1.13 1999/07/25 23:07:23 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/parsenodes.h"
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/*
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* transient data structure to hold return value of index_info. Note that
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* indexkeys, orderOprs and classlist is "null-terminated".
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*/
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typedef struct IdxInfoRetval
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{
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Oid relid; /* OID of the index relation (not the OID
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* of the relation being indexed) */
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Oid relam; /* OID of the pg_am of this index */
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int pages; /* number of pages in the index relation */
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int tuples; /* number of tuples in the index relation */
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int *indexkeys; /* keys over which we're indexing */
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Oid *orderOprs; /* operators used for ordering purposes */
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Oid *classlist; /* classes of AM operators */
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Oid indproc;
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Node *indpred;
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} IdxInfoRetval;
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extern void relation_info(Query *root,
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Oid relid,
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bool *hashindex, int *pages,
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int *tuples);
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extern bool index_info(Query *root,
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bool first, int relid, IdxInfoRetval *info);
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extern Cost restriction_selectivity(Oid functionObjectId,
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Oid operatorObjectId,
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Oid relationObjectId,
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AttrNumber attributeNumber,
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Datum constValue,
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int constFlag);
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extern void index_selectivity(Query *root, int relid, Oid indexid,
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List *indexquals,
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float *idxPages, float *idxSelec);
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extern Cost join_selectivity(Oid functionObjectId, Oid operatorObjectId,
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Oid relationObjectId1, AttrNumber attributeNumber1,
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Oid relationObjectId2, AttrNumber attributeNumber2);
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extern List *find_inheritance_children(Oid inhparent);
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#endif /* PLANCAT_H */
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