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/*-------------------------------------------------------------------------
*
* internal.h
* Definitions required throughout the query optimizer.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: internal.h,v 1.23 1999/07/25 23:07:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef INTERNAL_H
#define INTERNAL_H
#include "catalog/pg_index.h"
/*
* ---------- SHARED MACROS
*
* Macros common to modules for creating, accessing, and modifying
* query tree and query plan components.
* Shared with the executor.
*
*/
/*
* System-dependent tuning constants
*
*/
#define _CPU_PAGE_WEIGHT_ 0.033 /* CPU-heap-to-page cost weighting factor */
#define _CPU_INDEX_PAGE_WEIGHT_ 0.017 /* CPU-index-to-page cost
* weighting factor */
#define _MAX_KEYS_ INDEX_MAX_KEYS /* maximum number of keys in an
* index */
#define _TID_SIZE_ 6 /* sizeof(itemid) (from ../h/itemid.h) */
/*
* Size estimates
*
*/
/* The cost of sequentially scanning a materialized temporary relation
*/
#define _NONAME_SCAN_COST_ 10
/* The number of pages and tuples in a materialized relation
*/
#define _NONAME_RELATION_PAGES_ 1
#define _NONAME_RELATION_TUPLES_ 10
/* The length of a variable-length field in bytes
*/
#define _DEFAULT_ATTRIBUTE_WIDTH_ (2 * _TID_SIZE_)
/*
* Flags and identifiers
*
*/
/* Identifier for (sort) temp relations */
/* used to be -1 */
#define _NONAME_RELATION_ID_ InvalidOid
/* #define deactivate_joininfo(joininfo) joininfo->inactive=true*/
/*#define joininfo_inactive(joininfo) joininfo->inactive */
/* GEQO switch according to number of relations in a query */
#define GEQO_RELS 11
#endif /* INTERNAL_H */
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