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/*-------------------------------------------------------------------------
*
* plancat.h
* prototypes for plancat.c.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: plancat.h,v 1.11 1999/02/13 23:21:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PLANCAT_H
#define PLANCAT_H
#include <nodes/parsenodes.h>
/*
* transient data structure to hold return value of index_info. Note that
* indexkeys, orderOprs and classlist is "null-terminated".
*/
typedef struct IdxInfoRetval
{
Oid relid; /* OID of the index relation (not the OID
* of the relation being indexed) */
Oid relam; /* OID of the pg_am of this index */
int pages; /* number of pages in the index relation */
int tuples; /* number of tuples in the index relation */
int *indexkeys; /* keys over which we're indexing */
Oid *orderOprs; /* operators used for ordering purposes */
Oid *classlist; /* classes of AM operators */
Oid indproc;
Node *indpred;
} IdxInfoRetval;
extern void relation_info(Query *root,
Oid relid,
bool *hashindex, int *pages,
int *tuples);
extern bool index_info(Query *root,
bool first, int relid, IdxInfoRetval *info);
extern Cost restriction_selectivity(Oid functionObjectId,
Oid operatorObjectId,
Oid relationObjectId,
AttrNumber attributeNumber,
char *constValue,
int32 constFlag);
extern void index_selectivity(Oid indid, Oid *classes, List *opnos,
Oid relid, List *attnos, List *values, List *flags,
int32 nkeys, float *idxPages, float *idxSelec);
extern Cost join_selectivity(Oid functionObjectId, Oid operatorObjectId,
Oid relationObjectId1, AttrNumber attributeNumber1,
Oid relationObjectId2, AttrNumber attributeNumber2);
extern List *find_inheritance_children(Oid inhparent);
#endif /* PLANCAT_H */
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