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Diffstat (limited to 'src/backend/optimizer/xfunc.h')
| -rw-r--r-- | src/backend/optimizer/xfunc.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/backend/optimizer/xfunc.h b/src/backend/optimizer/xfunc.h new file mode 100644 index 00000000000..a3ee1b99cc2 --- /dev/null +++ b/src/backend/optimizer/xfunc.h @@ -0,0 +1,84 @@ +/*------------------------------------------------------------------------- + * + * xfunc.h-- + * prototypes for xfunc.c and predmig.c. + * + * + * Copyright (c) 1994, Regents of the University of California + * + * $Id: xfunc.h,v 1.1.1.1 1996/07/09 06:21:35 scrappy Exp $ + * + *------------------------------------------------------------------------- + */ +#ifndef XFUNC_H +#define XFUNC_H + +#include "nodes/relation.h" + +/* command line arg flags */ +#define XFUNC_OFF -1 /* do no optimization of expensive preds */ +#define XFUNC_NOR 2 /* do no optimization of OR clauses */ +#define XFUNC_NOPULL 4 /* never pull restrictions above joins */ +#define XFUNC_NOPM 8 /* don't do predicate migration */ +#define XFUNC_WAIT 16 /* don't do pullup until predicate migration */ +#define XFUNC_PULLALL 32 /* pull all expensive restrictions up, always */ + +/* constants for local and join predicates */ +#define XFUNC_LOCPRD 1 +#define XFUNC_JOINPRD 2 +#define XFUNC_UNKNOWN 0 + +extern int XfuncMode; /* defined in tcop/postgres.c */ + +/* defaults for function attributes used for expensive function calculations */ +#define BYTE_PCT 100 +#define PERBYTE_CPU 0 +#define PERCALL_CPU 0 +#define OUTIN_RATIO 100 + +/* default width assumed for variable length attributes */ +#define VARLEN_DEFAULT 128; + +/* Macro to get group rank out of group cost and group sel */ +#define get_grouprank(a) ((get_groupsel(a) - 1) / get_groupcost(a)) + +/* Macro to see if a path node is actually a Join */ +#define is_join(pathnode) (length(get_relids(get_parent(pathnode))) > 1 ? 1 : 0) + +/* function prototypes from planner/path/xfunc.c */ +extern void xfunc_trypullup(Rel *rel); +extern int xfunc_shouldpull(Path *childpath, JoinPath *parentpath, + int whichchild, CInfo *maxcinfopt); +extern CInfo *xfunc_pullup(Path *childpath, JoinPath *parentpath, CInfo *cinfo, + int whichchild, int clausetype); +extern Cost xfunc_rank(Expr *clause); +extern Cost xfunc_expense(Query* queryInfo, Expr *clause); +extern Cost xfunc_join_expense(JoinPath *path, int whichchild); +extern Cost xfunc_local_expense(Expr *clause); +extern Cost xfunc_func_expense(Expr *node, List *args); +extern int xfunc_width(Expr *clause); +/* static, moved to xfunc.c */ +/* extern int xfunc_card_unreferenced(Expr *clause, Relid referenced); */ +extern int xfunc_card_product(Relid relids); +extern List *xfunc_find_references(List *clause); +extern List *xfunc_primary_join(JoinPath *pathnode); +extern Cost xfunc_get_path_cost(Path *pathnode); +extern Cost xfunc_total_path_cost(JoinPath *pathnode); +extern Cost xfunc_expense_per_tuple(JoinPath *joinnode, int whichchild); +extern void xfunc_fixvars(Expr *clause, Rel *rel, int varno); +extern int xfunc_cinfo_compare(void *arg1, void *arg2); +extern int xfunc_clause_compare(void *arg1, void *arg2); +extern void xfunc_disjunct_sort(List *clause_list); +extern int xfunc_disjunct_compare(void *arg1, void *arg2); +extern int xfunc_func_width(RegProcedure funcid, List *args); +extern int xfunc_tuple_width(Relation rd); +extern int xfunc_num_join_clauses(JoinPath *path); +extern List *xfunc_LispRemove(List *foo, List *bar); +extern bool xfunc_copyrel(Rel *from, Rel **to); + +/* + * function prototypes for path/predmig.c + */ +extern bool xfunc_do_predmig(Path root); + +#endif /* XFUNC_H */ |