diff options
Diffstat (limited to 'src/include/optimizer/internal.h')
| -rw-r--r-- | src/include/optimizer/internal.h | 81 |
1 files changed, 42 insertions, 39 deletions
diff --git a/src/include/optimizer/internal.h b/src/include/optimizer/internal.h index 68d1f7d71d1..3180f2e3a89 100644 --- a/src/include/optimizer/internal.h +++ b/src/include/optimizer/internal.h @@ -1,72 +1,74 @@ /*------------------------------------------------------------------------- * * internal.h-- - * Definitions required throughout the query optimizer. + * Definitions required throughout the query optimizer. * * * Copyright (c) 1994, Regents of the University of California * - * $Id: internal.h,v 1.7 1997/06/03 03:15:50 vadim Exp $ + * $Id: internal.h,v 1.8 1997/09/07 04:59:06 momjian Exp $ * *------------------------------------------------------------------------- */ #ifndef INTERNAL_H #define INTERNAL_H -/* - * ---------- SHARED MACROS - * - * Macros common to modules for creating, accessing, and modifying - * query tree and query plan components. - * Shared with the executor. - * +/* + * ---------- 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 - * + * 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 - * +#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 +/* The cost of sequentially scanning a materialized temporary relation */ -#define _TEMP_SCAN_COST_ 10 +#define _TEMP_SCAN_COST_ 10 -/* The number of pages and tuples in a materialized relation +/* The number of pages and tuples in a materialized relation */ -#define _TEMP_RELATION_PAGES_ 1 -#define _TEMP_RELATION_TUPLES_ 10 +#define _TEMP_RELATION_PAGES_ 1 +#define _TEMP_RELATION_TUPLES_ 10 -/* The length of a variable-length field in bytes +/* The length of a variable-length field in bytes */ #define _DEFAULT_ATTRIBUTE_WIDTH_ (2 * _TID_SIZE_) -/* - * Flags and identifiers - * +/* + * Flags and identifiers + * */ -/* Identifier for (sort) temp relations */ +/* Identifier for (sort) temp relations */ /* used to be -1 */ -#define _TEMP_RELATION_ID_ InvalidOid +#define _TEMP_RELATION_ID_ InvalidOid -/* Identifier for invalid relation OIDs and attribute numbers for use by - * selectivity functions +/* Identifier for invalid relation OIDs and attribute numbers for use by + * selectivity functions */ -#define _SELEC_VALUE_UNKNOWN_ -1 +#define _SELEC_VALUE_UNKNOWN_ -1 -/* Flag indicating that a clause constant is really a parameter (or other - * non-constant?), a non-parameter, or a constant on the right side - * of the clause. +/* Flag indicating that a clause constant is really a parameter (or other + * non-constant?), a non-parameter, or a constant on the right side + * of the clause. */ #define _SELEC_NOT_CONSTANT_ 0 #define _SELEC_IS_CONSTANT_ 1 @@ -78,11 +80,12 @@ #define FLOAT_EQUAL(X,Y) ((X) - (Y) < TOLERANCE) #define FLOAT_IS_ZERO(X) (FLOAT_EQUAL(X,0.0)) -extern int BushyPlanFlag; -/* #define deactivate_joininfo(joininfo) joininfo->inactive=true*/ +extern int BushyPlanFlag; + +/* #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 6 -#endif /* INTERNAL_H */ +#endif /* INTERNAL_H */ |