*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.70 1999/02/13 23:15:53 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.71 1999/02/15 03:21:58 momjian Exp $
*
*-------------------------------------------------------------------------
*/
* ----------------
*/
static JoinInfo *
-_copyJoinInfo(JoinInfo * from)
+_copyJoinInfo(JoinInfo *from)
{
JoinInfo *newnode = makeNode(JoinInfo);
newnode->mergejoinable = from->mergejoinable;
newnode->hashjoinable = from->hashjoinable;
- newnode->inactive = from->inactive;
+ newnode->bushy_inactive = from->bushy_inactive;
return newnode;
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.32 1999/02/13 23:15:55 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.33 1999/02/15 03:21:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
}
static bool
-_equalJoinInfo(JoinInfo * a, JoinInfo * b)
+_equalJoinInfo(JoinInfo *a, JoinInfo *b)
{
Assert(IsA(a, JoinInfo));
Assert(IsA(b, JoinInfo));
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/nodes/Attic/freefuncs.c,v 1.10 1999/02/13 23:15:56 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/nodes/Attic/freefuncs.c,v 1.11 1999/02/15 03:21:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
* ----------------
*/
static void
-_freeJoinInfo(JoinInfo * node)
+_freeJoinInfo(JoinInfo *node)
{
/* ----------------
* free remainder of node
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: outfuncs.c,v 1.72 1999/02/13 23:15:59 momjian Exp $
+ * $Id: outfuncs.c,v 1.73 1999/02/15 03:21:59 momjian Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
* JoinInfo is a subclass of Node.
*/
static void
-_outJoinInfo(StringInfo str, JoinInfo * node)
+_outJoinInfo(StringInfo str, JoinInfo *node)
{
appendStringInfo(str, " JINFO :otherrels ");
_outIntList(str, node->otherrels);
#
# Copyright (c) 1994, Regents of the University of California
#
-# $Id: Makefile,v 1.10 1998/04/06 00:23:07 momjian Exp $
+# $Id: Makefile,v 1.11 1999/02/15 03:22:00 momjian Exp $
#
#-------------------------------------------------------------------------
endif
OBJS = geqo_copy.o geqo_eval.o geqo_main.o geqo_misc.o \
- geqo_params.o geqo_paths.o geqo_pool.o geqo_recombination.o \
+ geqo_params.o geqo_pool.o geqo_recombination.o \
geqo_selection.o \
geqo_erx.o geqo_pmx.o geqo_cx.o geqo_px.o geqo_ox1.o geqo_ox2.o
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: geqo_eval.c,v 1.31 1999/02/15 02:04:58 tgl Exp $
+ * $Id: geqo_eval.c,v 1.32 1999/02/15 03:22:00 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "optimizer/geqo_gene.h"
#include "optimizer/geqo.h"
-#include "optimizer/geqo_paths.h"
-
-static List *gimme_clause_joins(Query *root, RelOptInfo *outer_rel, RelOptInfo *inner_rel);
-static RelOptInfo *gimme_clauseless_join(RelOptInfo *outer_rel, RelOptInfo *inner_rel);
-static RelOptInfo *init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo);
-static List *new_join_tlist(List *tlist, List *other_relids, int first_resdomno);
-static List *new_joininfo_list(List *joininfo_list, List *join_relids);
-static void geqo_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptInfo *inner_rel);
static RelOptInfo *geqo_nth(int stop, List *rels);
/*
}
else
{ /* tree main part */
-
- if (!(new_rels = gimme_clause_joins(root, outer_rel, inner_rel)))
+ if (!(new_rels = make_rels_by_clause_joins(root, outer_rel,
+ inner_rel->joininfo,
+ inner_rel->relids)))
{
+#ifdef NOT_USED
if (BushyPlanFlag)
- {
- new_rels = lcons(gimme_clauseless_join(outer_rel, outer_rel), NIL); /* ??? MAU */
- }
+ new_rels = make_rels_by_clauseless_joins(outer_rel,
+ lcons(outer_rel,NIL));
else
- new_rels = lcons(gimme_clauseless_join(outer_rel, inner_rel), NIL);
+#endif
+ new_rels = make_rels_by_clauseless_joins(outer_rel,
+ lcons(inner_rel,NIL));
}
/* process new_rel->pathlist */
* not possible
*/
if (length(new_rels) > 1)
- new_rels = geqo_prune_rels(new_rels);
+ merge_rels_with_same_relids(new_rels);
if (length(new_rels) > 1)
{ /* should never be reached ... */
new_rel = (RelOptInfo *) lfirst(new_rels);
rel_count++;
- geqo_set_cheapest(new_rel);
+ set_cheapest(new_rel, new_rel->pathlist);
/* processing of other new_rel attributes */
if (new_rel->size <= 0)
return outer_rel; /* tree finished ... */
}
-/*
- * gimme_clause_joins
- *
- * 'outer_rel' is the relation entry for the outer relation
- * 'inner_rel' is the relation entry for the inner relation
- *
- * Returns a list of new join relations.
- */
-
-static List *
-gimme_clause_joins(Query *root, RelOptInfo *outer_rel, RelOptInfo *inner_rel)
-{
- List *join_list = NIL;
- List *i = NIL;
- List *joininfo_list = (List *) outer_rel->joininfo;
-
- foreach(i, joininfo_list)
- {
- JoinInfo *joininfo = (JoinInfo *) lfirst(i);
- RelOptInfo *rel = NULL;
-
- if (!joininfo->inactive)
- {
- List *other_rels = (List *) joininfo->otherrels;
-
- if (other_rels != NIL)
- {
- if ((length(other_rels) == 1))
- {
-
- if (same(other_rels, inner_rel->relids))
- { /* look if inner_rel is it... */
- rel = init_join_rel(outer_rel, inner_rel, joininfo);
- }
- }
- else if (BushyPlanFlag)
- { /* ?!? MAU */
- rel = init_join_rel(outer_rel, get_join_rel(root, other_rels), joininfo);
- }
- else
- rel = NULL;
-
- if (rel != NULL)
- join_list = lappend(join_list, rel);
-
- }
- }
- }
-
- return join_list;
-}
-
-/*
- * gimme_clauseless_join
- * Given an outer relation 'outer_rel' and an inner relation
- * 'inner_rel', create a join relation between 'outer_rel' and 'inner_rel'
- *
- * Returns a new join relation.
- */
-
-static RelOptInfo *
-gimme_clauseless_join(RelOptInfo *outer_rel, RelOptInfo *inner_rel)
-{
- return init_join_rel(outer_rel, inner_rel, (JoinInfo *) NULL);
-}
-
-/*
- * init_join_rel
- * Creates and initializes a new join relation.
- *
- * 'outer_rel' and 'inner_rel' are relation nodes for the relations to be
- * joined
- * 'joininfo' is the joininfo node(join clause) containing both
- * 'outer_rel' and 'inner_rel', if any exists
- *
- * Returns the new join relation node.
- */
-static RelOptInfo *
-init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
-{
- RelOptInfo *joinrel = makeNode(RelOptInfo);
- List *joinrel_joininfo_list = NIL;
- List *new_outer_tlist;
- List *new_inner_tlist;
-
- /*
- * Create a new tlist by removing irrelevant elements from both tlists
- * of the outer and inner join relations and then merging the results
- * together.
- */
- new_outer_tlist = new_join_tlist(outer_rel->targetlist, /* XXX 1-based attnos */
- inner_rel->relids, 1);
- new_inner_tlist = new_join_tlist(inner_rel->targetlist, /* XXX 1-based attnos */
- outer_rel->relids,
- length(new_outer_tlist) + 1);
-
- joinrel->relids = NIL;
- joinrel->indexed = false;
- joinrel->pages = 0;
- joinrel->tuples = 0;
- joinrel->width = 0;
-/* joinrel->targetlist = NIL;*/
- joinrel->pathlist = NIL;
- joinrel->cheapestpath = (Path *) NULL;
- joinrel->pruneable = true;
- joinrel->classlist = NULL;
- joinrel->relam = InvalidOid;
- joinrel->ordering = NULL;
- joinrel->restrictinfo = NIL;
- joinrel->joininfo = NULL;
- joinrel->innerjoin = NIL;
- joinrel->superrels = NIL;
-
- joinrel->relids = lcons(outer_rel->relids, lcons(inner_rel->relids, NIL));
-
- new_outer_tlist = nconc(new_outer_tlist, new_inner_tlist);
- joinrel->targetlist = new_outer_tlist;
-
- if (joininfo)
- {
- joinrel->restrictinfo = joininfo->jinfo_restrictinfo;
- if (BushyPlanFlag)
- joininfo->inactive = true;
- }
-
- joinrel_joininfo_list =
- new_joininfo_list(append(outer_rel->joininfo, inner_rel->joininfo),
- intAppend(outer_rel->relids, inner_rel->relids));
-
- joinrel->joininfo = joinrel_joininfo_list;
-
- geqo_joinrel_size(joinrel, outer_rel, inner_rel);
-
- return joinrel;
-}
-
-/*
- * new_join_tlist
- * Builds a join relations's target list by keeping those elements that
- * will be in the final target list and any other elements that are still
- * needed for future joins. For a target list entry to still be needed
- * for future joins, its 'joinlist' field must not be empty after removal
- * of all relids in 'other_relids'.
- *
- * 'tlist' is the target list of one of the join relations
- * 'other_relids' is a list of relids contained within the other
- * join relation
- * 'first_resdomno' is the resdom number to use for the first created
- * target list entry
- *
- * Returns the new target list.
- */
-static List *
-new_join_tlist(List *tlist,
- List *other_relids,
- int first_resdomno)
-{
- int resdomno = first_resdomno - 1;
- TargetEntry *xtl = NULL;
- List *t_list = NIL;
- List *i = NIL;
- List *join_list = NIL;
- bool in_final_tlist = false;
-
- foreach(i, tlist)
- {
- xtl = lfirst(i);
- /* XXX surely this is wrong? join_list is never changed? tgl 2/99 */
- in_final_tlist = (join_list == NIL);
- if (in_final_tlist)
- {
- resdomno += 1;
- t_list = lappend(t_list,
- create_tl_element(get_expr(xtl), resdomno));
- }
- }
-
- return t_list;
-}
-
-/*
- * new_joininfo_list
- * Builds a join relation's joininfo list by checking for join clauses
- * which still need to used in future joins involving this relation. A
- * join clause is still needed if there are still relations in the clause
- * not contained in the list of relations comprising this join relation.
- * New joininfo nodes are only created and added to
- * 'current_joininfo_list' if a node for a particular join hasn't already
- * been created.
- *
- * 'current_joininfo_list' contains a list of those joininfo nodes that
- * have already been built
- * 'joininfo_list' is the list of join clauses involving this relation
- * 'join_relids' is a list of relids corresponding to the relations
- * currently being joined
- *
- * Returns a list of joininfo nodes, new and old.
- */
-static List *
-new_joininfo_list(List *joininfo_list, List *join_relids)
-{
- List *current_joininfo_list = NIL;
- List *new_otherrels = NIL;
- JoinInfo *other_joininfo = (JoinInfo *) NULL;
- List *xjoininfo = NIL;
-
- foreach(xjoininfo, joininfo_list)
- {
- List *or;
- JoinInfo *joininfo = (JoinInfo *) lfirst(xjoininfo);
-
- new_otherrels = joininfo->otherrels;
- foreach(or, new_otherrels)
- {
- if (intMember(lfirsti(or), join_relids))
- new_otherrels = lremove((void *) lfirst(or), new_otherrels);
- }
- joininfo->otherrels = new_otherrels;
- if (new_otherrels != NIL)
- {
- other_joininfo = joininfo_member(new_otherrels,
- current_joininfo_list);
- if (other_joininfo)
- {
- other_joininfo->jinfo_restrictinfo =
- (List *) LispUnion(joininfo->jinfo_restrictinfo,
- other_joininfo->jinfo_restrictinfo);
- }
- else
- {
- other_joininfo = makeNode(JoinInfo);
-
- other_joininfo->otherrels = joininfo->otherrels;
- other_joininfo->jinfo_restrictinfo = joininfo->jinfo_restrictinfo;
- other_joininfo->mergejoinable = joininfo->mergejoinable;
- other_joininfo->hashjoinable = joininfo->hashjoinable;
- other_joininfo->inactive = false;
-
- current_joininfo_list = lcons(other_joininfo,
- current_joininfo_list);
- }
- }
- }
-
- return current_joininfo_list;
-}
-
-#ifdef NOTUSED
-/*
- * add_new_joininfos
- * For each new join relation, create new joininfos that
- * use the join relation as inner relation, and add
- * the new joininfos to those rel nodes that still
- * have joins with the join relation.
- *
- * 'joinrels' is a list of join relations.
- *
- * Modifies the joininfo field of appropriate rel nodes.
- */
-static void
-geqo_add_new_joininfos(Query *root, List *joinrels, List *outerrels)
-{
- List *xjoinrel = NIL;
- List *xrelid = NIL;
- List *xrel = NIL;
- List *xjoininfo = NIL;
-
- RelOptInfo *rel;
- List *relids;
-
- List *super_rels;
- List *xsuper_rel = NIL;
- JoinInfo *new_joininfo;
-
- foreach(xjoinrel, joinrels)
- {
- RelOptInfo *joinrel = (RelOptInfo *) lfirst(xjoinrel);
-
- foreach(xrelid, joinrel->relids)
- {
-
- /*
- * length(joinrel->relids) should always be greater that 1,
- * because of *JOIN*
- */
-
- /*
- * ! BUG BUG ! Relid relid = (Relid)lfirst(xrelid); RelOptInfo
- * *rel = get_join_rel(root, relid);
- */
-
- /*
- * if ( (root->join_rel_list) != NIL ) { rel =
- * get_join_rel(root, xrelid); } else { rel =
- * get_base_rel(root, lfirsti(xrelid)); }
- */
-
- /* NOTE: STILL BUGGY FOR CLAUSE-JOINS: */
-
- /*
- * relids = lconsi(lfirsti(xrelid), NIL); rel =
- * rel_member(relids, outerrels);
- */
-
- relids = lconsi(lfirsti(xrelid), NIL);
- rel = rel_member(relids, root->base_rel_list);
-
- add_superrels(rel, joinrel);
- }
- }
- foreach(xjoinrel, joinrels)
- {
- RelOptInfo *joinrel = (RelOptInfo *) lfirst(xjoinrel);
-
- foreach(xjoininfo, joinrel->joininfo)
- {
- JoinInfo *joininfo = (JoinInfo *) lfirst(xjoininfo);
- List *other_rels = joininfo->otherrels;
- List *restrict_info = joininfo->jinfo_restrictinfo;
- bool mergejoinable = joininfo->mergejoinable;
- bool hashjoinable = joininfo->hashjoinable;
-
- foreach(xrelid, other_rels)
- {
-
- /*
- * ! BUG BUG ! Relid relid = (Relid)lfirst(xrelid);
- * RelOptInfo *rel = get_join_rel(root, relid);
- */
-
- /*
- * if ( (root->join_rel_list) != NIL ) { rel =
- * get_join_rel(root, xrelid); } else { rel =
- * get_base_rel(root, lfirsti(xrelid)); }
- */
-
- /* NOTE: STILL BUGGY FOR CLAUSE-JOINS: */
-
- /*
- * relids = lconsi(lfirsti(xrelid), NIL); rel =
- * rel_member(relids, outerrels);
- */
-
- relids = lconsi(lfirsti(xrelid), NIL);
- rel = rel_member(relids, root->base_rel_list);
-
- super_rels = rel->superrels;
- new_joininfo = makeNode(JoinInfo);
-
- new_joininfo->otherrels = joinrel->relids;
- new_joininfo->jinfo_restrictinfo = restrict_info;
- new_joininfo->mergejoinable = mergejoinable;
- new_joininfo->hashjoinable = hashjoinable;
- new_joininfo->inactive = false;
- rel->joininfo = lappend(rel->joininfo, new_joininfo);
-
- foreach(xsuper_rel, super_rels)
- {
- RelOptInfo *super_rel = (RelOptInfo *) lfirst(xsuper_rel);
-
- if (nonoverlap_rels(super_rel, joinrel))
- {
- List *new_relids = super_rel->relids;
- JoinInfo *other_joininfo = joininfo_member(new_relids,
- joinrel->joininfo);
-
- if (other_joininfo)
- {
- other_joininfo->jinfo_restrictinfo =
- (List *) LispUnion(restrict_info,
- other_joininfo->jinfo_restrictinfo);
- }
- else
- {
- JoinInfo *new_joininfo = makeNode(JoinInfo);
-
- new_joininfo->otherrels = new_relids;
- new_joininfo->jinfo_restrictinfo = restrict_info;
- new_joininfo->mergejoinable = mergejoinable;
- new_joininfo->hashjoinable = hashjoinable;
- new_joininfo->inactive = false;
- joinrel->joininfo = lappend(joinrel->joininfo,
- new_joininfo);
- }
- }
- }
- }
- }
- }
- foreach(xrel, outerrels)
- {
- rel = (RelOptInfo *) lfirst(xrel);
- rel->superrels = NIL;
- }
-}
-
-/*
- * final_join_rels
- * Find the join relation that includes all the original
- * relations, i.e. the final join result.
- *
- * 'join_rel_list' is a list of join relations.
- *
- * Returns the list of final join relations.
- */
-static List *
-geqo_final_join_rels(List *join_rel_list)
-{
- List *xrel = NIL;
- List *t_list = NIL;
-
- /*
- * find the relations that has no further joins, i.e., its joininfos
- * all have otherrels nil.
- */
- foreach(xrel, join_rel_list)
- {
- RelOptInfo *rel = (RelOptInfo *) lfirst(xrel);
- List *xjoininfo = NIL;
- bool final = true;
-
- foreach(xjoininfo, rel->joininfo)
- {
- JoinInfo *joininfo = (JoinInfo *) lfirst(xjoininfo);
-
- if (joininfo->otherrels != NIL)
- {
- final = false;
- break;
- }
- }
- if (final)
- {
- t_list = lappend(t_list, rel);
- }
- }
-
- return t_list;
-}
-
-/*
- * add_superrels
- * add rel to the temporary property list superrels.
- *
- * 'rel' a rel node
- * 'super_rel' rel node of a join relation that includes rel
- *
- * Modifies the superrels field of rel
- */
-static void
-add_superrels(RelOptInfo *rel, RelOptInfo *super_rel)
-{
- rel->superrels = lappend(rel->superrels, super_rel);
-}
-
-/*
- * nonoverlap_rels
- * test if two join relations overlap, i.e., includes the same
- * relation.
- *
- * 'rel1' and 'rel2' are two join relations
- *
- * Returns non-nil if rel1 and rel2 do not overlap.
- */
-static bool
-nonoverlap_rels(RelOptInfo *rel1, RelOptInfo *rel2)
-{
- return nonoverlap_sets(rel1->relids, rel2->relids);
-}
-
-static bool
-nonoverlap_sets(List *s1, List *s2)
-{
- List *x = NIL;
-
- foreach(x, s1)
- {
- int e = lfirsti(x);
-
- if (intMember(e, s2))
- return false;
- }
- return true;
-}
-
-#endif /* NOTUSED */
-
-/*
- * geqo_joinrel_size
- * compute estimate for join relation tuples, even for
- * long join queries; so get logarithm of size when MAXINT overflow;
- */
-static void
-geqo_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptInfo *inner_rel)
-{
- Cost temp;
- int ntuples;
-
- temp = (Cost) inner_rel->tuples * (Cost) outer_rel->tuples; /* cartesian product */
-
- if (joinrel->restrictinfo)
- temp = temp * product_selec(joinrel->restrictinfo);
-
- if (temp >= (MAXINT - 1))
- ntuples = ceil(geqo_log((double) temp, (double) GEQO_LOG_BASE));
- else
- ntuples = ceil((double) temp);
-
- if (ntuples < 1)
- ntuples = 1; /* make the best case 1 instead of 0 */
-
- joinrel->tuples = ntuples;
-}
-
-double
-geqo_log(double x, double b)
-{
- return log(x) / log(b);
-}
-
static RelOptInfo *
geqo_nth(int stop, List *rels)
{
*
* Copyright (c) 1994, Regents of the University of California
*
-* $Id: geqo_params.c,v 1.13 1999/02/13 23:16:10 momjian Exp $
+* $Id: geqo_params.c,v 1.14 1999/02/15 03:22:01 momjian Exp $
*
*-------------------------------------------------------------------------
*/
static int gimme_pool_size(int string_length);
static int gimme_number_generations(int pool_size, int effort);
static int next_token(FILE *, char *, int);
+static double geqo_log(double x, double b);
/*
* geqo_param
return effort * number_gens;
}
+
+static double
+geqo_log(double x, double b)
+{
+ return (log(x) / log(b));
+}
+++ /dev/null
-/*-------------------------------------------------------------------------
- *
- * geqo_paths.c
- * Routines to process redundant paths and relations
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- * $Id: geqo_paths.c,v 1.21 1999/02/15 02:04:58 tgl Exp $
- *
- *-------------------------------------------------------------------------
- */
-
-#include "postgres.h"
-
-#include "nodes/pg_list.h"
-#include "nodes/relation.h"
-#include "nodes/primnodes.h"
-
-#include "utils/palloc.h"
-#include "utils/elog.h"
-
-#include "optimizer/internal.h"
-#include "optimizer/paths.h"
-#include "optimizer/pathnode.h"
-#include "optimizer/clauses.h"
-#include "optimizer/cost.h"
-
-#include "optimizer/geqo_paths.h"
-
-
-static List *geqo_prune_rel(RelOptInfo *rel, List *other_rels);
-
-/*
- * geqo_prune_rels
- * Removes any redundant relation entries from a list of rel nodes
- * 'rel_list'.
- *
- * Returns the resulting list.
- *
- */
-List *
-geqo_prune_rels(List *rel_list)
-{
- List *temp_list = NIL;
-
- if (rel_list != NIL)
- {
- temp_list = lcons(lfirst(rel_list),
- geqo_prune_rels(geqo_prune_rel((RelOptInfo *) lfirst(rel_list),
- lnext(rel_list))));
- }
- return temp_list;
-}
-
-/*
- * geqo_prune_rel
- * Prunes those relations from 'other_rels' that are redundant with
- * 'rel'. A relation is redundant if it is built up of the same
- * relations as 'rel'. Paths for the redundant relation are merged into
- * the pathlist of 'rel'.
- *
- * Returns a list of non-redundant relations, and sets the pathlist field
- * of 'rel' appropriately.
- *
- */
-static List *
-geqo_prune_rel(RelOptInfo *rel, List *other_rels)
-{
- List *t_list = NIL;
- List *i;
- RelOptInfo *other_rel;
-
- foreach(i, other_rels)
- {
- other_rel = (RelOptInfo *) lfirst(i);
- if (same(rel->relids, other_rel->relids))
- {
- rel->pathlist = add_pathlist(rel,
- rel->pathlist,
- other_rel->pathlist);
- }
- else
- {
- t_list = lappend(t_list, other_rel);
- }
- }
- return t_list;
-}
-
-/*
- * geqo_set_cheapest
- * For a relation 'rel' (which corresponds to a join
- * relation), set pointers to the cheapest path
- */
-void
-geqo_set_cheapest(RelOptInfo *rel)
-{
- JoinPath *cheapest = (JoinPath *)set_cheapest(rel, rel->pathlist);
-
- if (IsA_JoinPath(cheapest))
- rel->size = compute_joinrel_size(cheapest);
- else
- rel->size = 0;
-}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.34 1999/02/14 05:27:11 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.35 1999/02/15 03:22:03 momjian Exp $
*
*-------------------------------------------------------------------------
*/
static void find_base_rel_paths(Query *root, List *rels);
-static List *find_join_paths(Query *root, List *outer_rels, int levels_needed);
+static RelOptInfo *make_one_rel_by_joins(Query *root, List *outer_rels, int levels_needed);
#ifdef OPTIMIZER_DEBUG
static void debug_print_rel(Query *root, RelOptInfo *rel);
#endif
/*
- * find_paths
- * Finds all possible access paths for executing a query, returning the
- * top level list of relation entries.
+ * make_one_rel
+ * Finds all possible access paths for executing a query, returning a
+ * single rel.
*
* 'rels' is the list of single relation entries appearing in the query
*/
-List *
-find_paths(Query *root, List *rels)
+RelOptInfo *
+make_one_rel(Query *root, List *rels)
{
int levels_needed;
levels_needed = length(rels);
if (levels_needed <= 0)
- return NIL;
+ return NULL;
find_base_rel_paths(root, rels);
/*
* Unsorted single relation, no more processing is required.
*/
- return rels;
+ return lfirst(rels);
}
else
{
*/
set_rest_relselec(root, rels);
- return find_join_paths(root, rels, levels_needed);
+ return make_one_rel_by_joins(root, rels, levels_needed);
}
}
}
/*
- * find_join_paths
+ * make_one_rel_by_joins
* Find all possible joinpaths for a query by successively finding ways
* to join single relations into join relations.
*
* Returns the final level of join relations, i.e., the relation that is
* the result of joining all the original relations together.
*/
-static List *
-find_join_paths(Query *root, List *outer_rels, int levels_needed)
+static RelOptInfo *
+make_one_rel_by_joins(Query *root, List *outer_rels, int levels_needed)
{
List *x;
List *joined_rels = NIL;
* <utesch@aut.tu-freiberg.de> *
*******************************************/
if ((_use_geqo_) && length(root->base_rel_list) >= _use_geqo_rels_)
- return lcons(geqo(root), NIL); /* returns *one* Rel, so lcons it */
+ return geqo(root);
/*******************************************
* rest will be deprecated in case of GEQO *
* modify 'joined_rels' accordingly, then eliminate redundant join
* relations.
*/
- joined_rels = make_new_rels_by_joins(root, outer_rels);
+ joined_rels = make_rels_by_joins(root, outer_rels);
update_rels_pathlist_for_joins(root, joined_rels);
rels_set_cheapest(joined_rels);
+#ifdef NOT_USED
if (BushyPlanFlag)
{
-
/*
* In case of bushy trees if there is still a join between a
* join relation and another relation, add a new joininfo that
*/
add_new_joininfos(root, joined_rels, outer_rels);
}
+#endif
foreach(x, joined_rels)
{
#endif
}
+#ifdef NOT_USED
if (BushyPlanFlag)
{
/*
root->join_rel_list = outer_rels;
}
else
- root->join_rel_list = joined_rels;
+#endif
+ root->join_rel_list = joined_rels;
+#ifdef NOT_USED
if (!BushyPlanFlag)
- outer_rels = joined_rels;
+#endif
+ outer_rels = joined_rels;
+
}
+ Assert(length(joined_rels) == 1);
+
+#ifdef NOT_USED
if (BushyPlanFlag)
return final_join_rels(outer_rels);
else
- return joined_rels;
+#endif
+ return lfirst(joined_rels);
}
/*****************************************************************************
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.32 1999/02/13 23:16:16 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.33 1999/02/15 03:22:04 momjian Exp $
*
*-------------------------------------------------------------------------
*/
Cost temp = 1.0;
int temp1 = 0;
+ /* cartesian product */
temp *= ((Path *) joinpath->outerjoinpath)->parent->size;
temp *= ((Path *) joinpath->innerjoinpath)->parent->size;
temp = temp * product_selec(joinpath->pathinfo);
- if (temp >= (MAXINT - 1))
- temp1 = MAXINT;
- else
+ if (temp >= (MAXINT-1)/2)
{
-
- /*
- * should be ceil here, we don't want joinrel size's of one, do
- * we?
- */
- temp1 = ceil((double) temp);
+ /* if we exceed (MAXINT-1)/2, we switch to log scale */
+ /* +1 prevents log(0) */
+ temp1 = ceil(log(temp + 1 - (MAXINT-1)/2) + (MAXINT-1)/2);
}
+ else
+ temp1 = ceil((double) temp);
Assert(temp1 >= 0);
return temp1;
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.46 1999/02/15 02:04:55 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.47 1999/02/15 03:22:05 momjian Exp $
*
*-------------------------------------------------------------------------
*/
pathnode->path.joinid = ((RestrictInfo *) lfirst(clausegroup))->restrictinfojoinid;
pathnode->path.path_cost = cost_index((Oid) lfirsti(index->relids),
- (int) temp_pages,
- temp_selec,
- rel->pages,
- rel->tuples,
- index->pages,
- index->tuples,
- true);
+ (int) temp_pages,
+ temp_selec,
+ rel->pages,
+ rel->tuples,
+ index->pages,
+ index->tuples,
+ true);
/*
* copy restrictinfo list into path for expensive function
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.26 1999/02/15 02:04:57 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.27 1999/02/15 03:22:05 momjian Exp $
*
*-------------------------------------------------------------------------
*/
Path *bestinnerjoin;
List *pathlist = NIL;
+ /* flatten out relids later in this function */
innerrelids = lsecond(joinrel->relids);
outerrelids = lfirst(joinrel->relids);
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinrels.c,v 1.22 1999/02/15 02:04:57 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinrels.c,v 1.23 1999/02/15 03:22:05 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#endif
-static List *find_clause_joins(Query *root, RelOptInfo *outer_rel, List *joininfo_list);
-static List *find_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels);
-static RelOptInfo *init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo);
-static List *new_join_tlist(List *tlist, List *other_relids,
- int first_resdomno);
static List *new_joininfo_list(List *joininfo_list, List *join_relids);
static void add_superrels(RelOptInfo *rel, RelOptInfo *super_rel);
static bool nonoverlap_rels(RelOptInfo *rel1, RelOptInfo *rel2);
static bool nonoverlap_sets(List *s1, List *s2);
static void set_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptInfo *inner_rel,
- JoinInfo * jinfo);
+ JoinInfo *jinfo);
/*
- * make_new_rels_by_joins
+ * make_rels_by_joins
* Find all possible joins for each of the outer join relations in
* 'outer_rels'. A rel node is created for each possible join relation,
* and the resulting list of nodes is returned. If at all possible, only
* Returns a list of rel nodes corresponding to the new join relations.
*/
List *
-make_new_rels_by_joins(Query *root, List *outer_rels)
+make_rels_by_joins(Query *root, List *outer_rels)
{
List *joins = NIL;
List *join_list = NIL;
{
RelOptInfo *outer_rel = (RelOptInfo *) lfirst(r);
- if (!(joins = find_clause_joins(root, outer_rel, outer_rel->joininfo)))
+ if (!(joins = make_rels_by_clause_joins(root, outer_rel,
+ outer_rel->joininfo,
+ NIL)))
{
/*
* Oops, we have a relation that is not joined to any other
* relation. Cartesian product time.
*/
+#ifdef NOT_USED
if (BushyPlanFlag)
- joins = find_clauseless_joins(outer_rel, outer_rels);
+ joins = make_rels_by_clauseless_joins(outer_rel, outer_rels);
else
- joins = find_clauseless_joins(outer_rel, root->base_rel_list);
+#endif
+ joins = make_rels_by_clauseless_joins(outer_rel, root->base_rel_list);
}
join_list = nconc(join_list, joins);
}
/*
- * find_clause_joins
+ * make_rels_by_clause_joins
* Determines whether joins can be performed between an outer relation
* 'outer_rel' and those relations within 'outer_rel's joininfo nodes
* (i.e., relations that participate in join clauses that 'outer_rel'
*
* Returns a list of new join relations.
*/
-static List *
-find_clause_joins(Query *root, RelOptInfo *outer_rel, List *joininfo_list)
+List *
+make_rels_by_clause_joins(Query *root, RelOptInfo *outer_rel,
+ List *joininfo_list, List *only_relids)
{
List *join_list = NIL;
List *i = NIL;
JoinInfo *joininfo = (JoinInfo *) lfirst(i);
RelOptInfo *rel;
- if (!joininfo->inactive)
+ if (!joininfo->bushy_inactive)
{
List *other_rels = joininfo->otherrels;
if (other_rels != NIL)
{
- if (length(other_rels) == 1)
+ if (length(other_rels) == 1 &&
+ (only_relids == NIL ||
+ /* geqo only wants certain relids to make new rels */
+ same(joininfo->otherrels, only_relids)))
{
- rel = init_join_rel(outer_rel,
+ rel = make_join_rel(outer_rel,
get_base_rel(root, lfirsti(other_rels)),
joininfo);
/* how about right-sided plan ? */
{
if (rel != NULL)
join_list = lappend(join_list, rel);
- rel = init_join_rel(get_base_rel(root,
+ rel = make_join_rel(get_base_rel(root,
lfirsti(other_rels)),
outer_rel,
joininfo);
}
}
+#ifdef NOT_USED
else if (BushyPlanFlag)
{
- rel = init_join_rel(outer_rel,
+ rel = make_join_rel(outer_rel,
get_join_rel(root, other_rels),
joininfo);
}
+#endif
else
rel = NULL;
}
/*
- * find_clauseless_joins
+ * make_rels_by_clauseless_joins
* Given an outer relation 'outer_rel' and a list of inner relations
* 'inner_rels', create a join relation between 'outer_rel' and each
* member of 'inner_rels' that isn't already included in 'outer_rel'.
*
* Returns a list of new join relations.
*/
-static List *
-find_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels)
+List *
+make_rels_by_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels)
{
RelOptInfo *inner_rel;
List *t_list = NIL;
if (nonoverlap_rels(inner_rel, outer_rel))
{
t_list = lappend(t_list,
- init_join_rel(outer_rel,
+ make_join_rel(outer_rel,
inner_rel,
(JoinInfo *) NULL));
}
}
/*
- * init_join_rel
+ * make_join_rel
* Creates and initializes a new join relation.
*
* 'outer_rel' and 'inner_rel' are relation nodes for the relations to be
*
* Returns the new join relation node.
*/
-static RelOptInfo *
-init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
+RelOptInfo *
+make_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo *joininfo)
{
RelOptInfo *joinrel = makeNode(RelOptInfo);
List *joinrel_joininfo_list = NIL;
joinrel->pages = 0;
joinrel->tuples = 0;
joinrel->width = 0;
-/* joinrel->targetlist = NIL;*/
+/* joinrel->targetlist = NIL;*/
joinrel->pathlist = NIL;
joinrel->cheapestpath = (Path *) NULL;
joinrel->pruneable = true;
joinrel->innerjoin = NIL;
joinrel->superrels = NIL;
- joinrel->relids = lcons(outer_rel->relids, /* ??? aren't they lists?
- * -ay */
- lcons(inner_rel->relids, NIL));
+ /*
+ * This function uses a trick to pass inner/outer rels as
+ * different lists, and then flattens it out later.
+ */
+ joinrel->relids = lcons(outer_rel->relids, lcons(inner_rel->relids, NIL));
new_outer_tlist = nconc(new_outer_tlist, new_inner_tlist);
joinrel->targetlist = new_outer_tlist;
if (joininfo)
{
joinrel->restrictinfo = joininfo->jinfo_restrictinfo;
+#ifdef NOT_USED
if (BushyPlanFlag)
- joininfo->inactive = true;
+ joininfo->bushy_inactive = true;
+#endif
}
joinrel_joininfo_list = new_joininfo_list(append(outer_rel->joininfo, inner_rel->joininfo),
*
* Returns the new target list.
*/
-static List *
+List *
new_join_tlist(List *tlist,
List *other_relids,
int first_resdomno)
other_joininfo->jinfo_restrictinfo = joininfo->jinfo_restrictinfo;
other_joininfo->mergejoinable = joininfo->mergejoinable;
other_joininfo->hashjoinable = joininfo->hashjoinable;
- other_joininfo->inactive = false;
+ other_joininfo->bushy_inactive = false;
current_joininfo_list = lcons(other_joininfo,
current_joininfo_list);
new_joininfo->jinfo_restrictinfo = restrict_info;
new_joininfo->mergejoinable = mergejoinable;
new_joininfo->hashjoinable = hashjoinable;
- new_joininfo->inactive = false;
+ new_joininfo->bushy_inactive = false;
rel->joininfo = lappend(rel->joininfo, new_joininfo);
foreach(xsuper_rel, super_rels)
new_joininfo->jinfo_restrictinfo = restrict_info;
new_joininfo->mergejoinable = mergejoinable;
new_joininfo->hashjoinable = hashjoinable;
- new_joininfo->inactive = false;
+ new_joininfo->bushy_inactive = false;
joinrel->joininfo = lappend(joinrel->joininfo,
new_joininfo);
}
}
}
+#ifdef NOT_USED
/*
* final_join_rels
* Find the join relation that includes all the original
*
* Returns the list of final join relations.
*/
-List *
+RelOptInfo *
final_join_rels(List *join_rel_list)
{
List *xrel = NIL;
- List *t_list = NIL;
+ RelOptInfo *final_rel = NULL;
/*
* find the relations that has no further joins, i.e., its joininfos
}
}
if (final)
- {
- t_list = lappend(t_list, rel);
- }
+ if (final_rel == NULL ||
+ path_is_cheaper(rel->cheapestpath, final_rel->cheapestpath))
+ final_rel = rel;
}
- return t_list;
+ return final_rel;
}
+#endif
/*
* add_superrels
}
static void
-set_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * jinfo)
+set_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo *jinfo)
{
int ntuples;
float selec;
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/mergeutils.c,v 1.18 1999/02/13 23:16:20 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/mergeutils.c,v 1.19 1999/02/15 03:22:06 momjian Exp $
*
*-------------------------------------------------------------------------
*/
if (merge_ordering)
{
-
/*
* Create a new mergeinfo node and add it to 'mergeinfo_list'
* if one does not yet exist for this merge ordering.
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/prune.c,v 1.32 1999/02/14 04:56:47 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/prune.c,v 1.33 1999/02/15 03:22:06 momjian Exp $
*
*-------------------------------------------------------------------------
*/
}
}
-
+#ifdef NOT_USED
/*
* merge_joinrels
* Given two lists of rel nodes that are already
/*
* prune_oldrels
- * If all the joininfo's in a rel node are inactive,
+ * If all the joininfo's in a rel node are bushy_inactive,
* that means that this node has been joined into
* other nodes in all possible ways, therefore
* this node can be discarded. If not, it will cause
{
JoinInfo *joininfo = (JoinInfo *) lfirst(xjoininfo);
- if (!joininfo->inactive)
+ if (!joininfo->bushy_inactive)
{
temp_list = lcons(rel, temp_list);
break;
}
return temp_list;
}
+#endif
+
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/initsplan.c,v 1.25 1999/02/15 01:06:58 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/initsplan.c,v 1.26 1999/02/15 03:22:11 momjian Exp $
*
*-------------------------------------------------------------------------
*/
if (_enable_mergejoin_)
sortop = mergejoinop(clause);
- if (_enable_hashjoin_)
- hashop = hashjoinop(clause);
-
if (sortop)
{
restrictinfo->mergejoinorder = sortop;
joininfo->mergejoinable = true;
}
+
+ if (_enable_hashjoin_)
+ hashop = hashjoinop(clause);
if (hashop)
{
restrictinfo->hashjoinoperator = hashop;
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.32 1999/02/14 04:56:50 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.33 1999/02/15 03:22:12 momjian Exp $
*
*-------------------------------------------------------------------------
*/
}
#ifdef NOT_USED
-
/*
* Destructively modify the query plan's targetlist to add fjoin lists
* to flatten functions that return sets of base types
List *qual)
{
RelOptInfo *final_rel;
- List *final_rel_list;
/*
* Initialize the targetlist and qualification, adding entries to
set_joininfo_mergeable_hashable(root->base_rel_list);
- final_rel_list = find_paths(root, root->base_rel_list);
-
- if (final_rel_list)
- final_rel = (RelOptInfo *) lfirst(final_rel_list);
- else
- final_rel = (RelOptInfo *) NIL;
+ final_rel = make_one_rel(root, root->base_rel_list);
#if 0 /* fix xfunc */
return create_plan((Path *) final_rel->cheapestpath);
else
{
- elog(NOTICE, "final relation is nil");
+ elog(NOTICE, "final relation is null");
return create_plan((Path *) NULL);
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/util/joininfo.c,v 1.15 1999/02/13 23:16:45 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/util/joininfo.c,v 1.16 1999/02/15 03:22:16 momjian Exp $
*
*-------------------------------------------------------------------------
*/
joininfo->jinfo_restrictinfo = NIL;
joininfo->mergejoinable = false;
joininfo->hashjoinable = false;
- joininfo->inactive = false;
+ joininfo->bushy_inactive = false;
this_rel->joininfo = lcons(joininfo, this_rel->joininfo);
}
return joininfo;
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.35 1999/02/13 23:16:46 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.36 1999/02/15 03:22:16 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/* is the statement above really true? what about IndexScan as the
inner of a join? */
pathnode->path.path_cost = cost_index(lfirsti(index->relids),
- index->pages,
- 1.0,
- rel->pages,
- rel->tuples,
- index->pages,
- index->tuples,
- false);
- /* add in expensive functions cost! -- JMH, 7/7/92 */
+ index->pages,
+ 1.0,
+ rel->pages,
+ rel->tuples,
+ index->pages,
+ index->tuples,
+ false);
#if 0
+ /* add in expensive functions cost! -- JMH, 7/7/92 */
if (XfuncMode != XFUNC_OFF)
{
pathnode->path_cost = (pathnode->path_cost +
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.13 1999/02/13 23:16:48 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.14 1999/02/15 03:22:17 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
if (relid < 0)
{
-
/*
* If the relation is a materialized relation, assume
* constants for sizes.
*/
rel->pages = _NONAME_RELATION_PAGES_;
rel->tuples = _NONAME_RELATION_TUPLES_;
-
}
else
{
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.99 1999/02/13 23:18:45 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.100 1999/02/15 03:22:21 momjian Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
* plans
* ----------------
*/
+#ifdef NOT_USED
int BushyPlanFlag = 0; /* default to false -- consider only
* left-deep trees */
+#endif
/*
** Flags for expensive function optimization -- JMH 3/9/92
#endif
break;
+#ifdef NOT_USED
case 'b':
/* ----------------
* set BushyPlanFlag to true.
*/
BushyPlanFlag = 1;
break;
+#endif
case 'B':
/* ----------------
if (!IsUnderPostmaster)
{
puts("\nPOSTGRES backend interactive interface ");
- puts("$Revision: 1.99 $ $Date: 1999/02/13 23:18:45 $\n");
+ puts("$Revision: 1.100 $ $Date: 1999/02/15 03:22:21 $\n");
}
/* ----------------
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: relation.h,v 1.23 1999/02/13 23:21:42 momjian Exp $
+ * $Id: relation.h,v 1.24 1999/02/15 03:22:23 momjian Exp $
*
*-------------------------------------------------------------------------
*/
List *jinfo_restrictinfo;
bool mergejoinable;
bool hashjoinable;
- bool inactive;
+ bool bushy_inactive;
} JoinInfo;
typedef struct Iter
+++ /dev/null
-/*-------------------------------------------------------------------------
- *
- * geqo_paths.h
- * prototypes for various subroutines in geqo_path.c
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- * $Id: geqo_paths.h,v 1.9 1999/02/13 23:21:47 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-
-/* contributed by:
- =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
- * Martin Utesch * Institute of Automatic Control *
- = = University of Mining and Technology =
- * utesch@aut.tu-freiberg.de * Freiberg, Germany *
- =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
- */
-
-#ifndef GEQO_PATHS_H
-#define GEQO_PATHS_H
-
-
-extern List *geqo_prune_rels(List *rel_list);
-extern void geqo_set_cheapest(RelOptInfo *rel);
-
-#endif /* GEQO_PATHS_H */
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: internal.h,v 1.14 1999/02/13 23:21:49 momjian Exp $
+ * $Id: internal.h,v 1.15 1999/02/15 03:22:31 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#define FLOAT_EQUAL(X,Y) ((X) - (Y) < TOLERANCE)
#define FLOAT_IS_ZERO(X) (FLOAT_EQUAL(X,0.0))
+#ifdef NOT_USED
extern int BushyPlanFlag;
+#endif
/* #define deactivate_joininfo(joininfo) joininfo->inactive=true*/
/*#define joininfo_inactive(joininfo) joininfo->inactive */
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: paths.h,v 1.16 1999/02/14 04:56:55 momjian Exp $
+ * $Id: paths.h,v 1.17 1999/02/15 03:22:31 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/*
* allpaths.h
*/
-extern List *find_paths(Query *root, List *rels);
+extern RelOptInfo *make_one_rel(Query *root, List *rels);
/*
* indxpath.h
* joinrels.h
* routines to determine which relations to join
*/
-extern List *make_new_rels_by_joins(Query *root, List *outer_rels);
+extern List *make_rels_by_joins(Query *root, List *outer_rels);
extern void add_new_joininfos(Query *root, List *joinrels, List *outerrels);
-extern List *final_join_rels(List *join_rel_list);
+extern List *make_rels_by_clause_joins(Query *root, RelOptInfo *outer_rel,
+ List *joininfo_list, List *only_relids);
+extern List *make_rels_by_clauseless_joins(RelOptInfo *outer_rel,
+ List *inner_rels);
+extern RelOptInfo *make_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo *joininfo);
+extern List *new_join_tlist(List *tlist, List *other_relids,int first_resdomno);
/*
* prototypes for path/prune.c
*/
extern void merge_rels_with_same_relids(List *rel_list);
extern void rels_set_cheapest(List *rel_list);
-extern List *merge_joinrels(List *rel_list1, List *rel_list2);
-extern List *prune_oldrels(List *old_rels);
#endif /* PATHS_H */
*
* Copyright (c) 1994, Regents of the University of California
*
- * $Id: proc.h,v 1.17 1999/02/13 23:22:09 momjian Exp $
+ * $Id: proc.h,v 1.18 1999/02/15 03:22:37 momjian Exp $
*
*-------------------------------------------------------------------------
*/
extern PROC *MyProc;
-#define PROC_INCR_SLOCK(lock) if (MyProc) ((MyProc->sLocks[(lock)])++)
-#define PROC_DECR_SLOCK(lock) if (MyProc) ((MyProc->sLocks[(lock)])--)
+#define PROC_INCR_SLOCK(lock) \
+do { \
+ if (MyProc) (MyProc->sLocks[(lock)])++; \
+} while (0)
+
+#define PROC_DECR_SLOCK(lock) \
+do { \
+ if (MyProc) (MyProc->sLocks[(lock)])--; \
+} while (0)
/*
* flags explaining why process woke up
projects / postgresql.git / commitdiff