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Code

Remove duplicate geqo functions, and more optimizer cleanup

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This commit is contained in:
Bruce Momjian 1999-02-15 03:22:37 +00:00
parent 944d3c395e
commit ba2883b264
26 changed files with 188 additions and 810 deletions
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6
src/backend/nodes/copyfuncs.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -1420,7 +1420,7 @@ _copyMergeInfo(MergeInfo *from)
* ----------------
*/
static JoinInfo *
_copyJoinInfo(JoinInfo * from)
_copyJoinInfo(JoinInfo *from)
{
JoinInfo *newnode = makeNode(JoinInfo);
@ -1433,7 +1433,7 @@ _copyJoinInfo(JoinInfo * from)
newnode->mergejoinable = from->mergejoinable;
newnode->hashjoinable = from->hashjoinable;
newnode->inactive = from->inactive;
newnode->bushy_inactive = from->bushy_inactive;
return newnode;
}

4
src/backend/nodes/equalfuncs.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -522,7 +522,7 @@ _equalSubPlan(SubPlan *a, SubPlan *b)
}
static bool
_equalJoinInfo(JoinInfo * a, JoinInfo * b)
_equalJoinInfo(JoinInfo *a, JoinInfo *b)
{
Assert(IsA(a, JoinInfo));
Assert(IsA(b, JoinInfo));

4
src/backend/nodes/freefuncs.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -1018,7 +1018,7 @@ _freeMergeInfo(MergeInfo *node)
* ----------------
*/
static void
_freeJoinInfo(JoinInfo * node)
_freeJoinInfo(JoinInfo *node)
{
/* ----------------
* free remainder of node

4
src/backend/nodes/outfuncs.c
View File

@ -5,7 +5,7 @@
*
* 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
@ -1196,7 +1196,7 @@ _outHashInfo(StringInfo str, HashInfo *node)
* 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);

4
src/backend/optimizer/geqo/Makefile
View File

@ -5,7 +5,7 @@
#
# 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 $
#
#-------------------------------------------------------------------------
@ -19,7 +19,7 @@ CFLAGS+= -Wno-error
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

549
src/backend/optimizer/geqo/geqo_eval.c
View File

@ -5,7 +5,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -47,15 +47,7 @@
#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);
/*
@ -123,15 +115,18 @@ gimme_tree(Query *root, Gene *tour, int rel_count, int num_gene, RelOptInfo *out
}
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 */
@ -150,7 +145,7 @@ gimme_tree(Query *root, Gene *tour, int rel_count, int num_gene, RelOptInfo *out
* 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 ... */
@ -161,7 +156,7 @@ gimme_tree(Query *root, Gene *tour, int rel_count, int num_gene, RelOptInfo *out
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)
@ -178,526 +173,6 @@ gimme_tree(Query *root, Gene *tour, int rel_count, int num_gene, RelOptInfo *out
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)
{

9
src/backend/optimizer/geqo/geqo_params.c
View File

@ -5,7 +5,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -61,6 +61,7 @@
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
@ -338,3 +339,9 @@ gimme_number_generations(int pool_size, int effort)
return effort * number_gens;
}
static double
geqo_log(double x, double b)
{
return (log(x) / log(b));
}

104
src/backend/optimizer/geqo/geqo_paths.c
View File

@ -1,104 +0,0 @@
/*-------------------------------------------------------------------------
*
* 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;
}

48
src/backend/optimizer/path/allpaths.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -44,7 +44,7 @@ int32 _use_geqo_rels_ = GEQO_RELS;
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);
@ -52,14 +52,14 @@ 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;
@ -69,7 +69,7 @@ find_paths(Query *root, List *rels)
levels_needed = length(rels);
if (levels_needed <= 0)
return NIL;
return NULL;
find_base_rel_paths(root, rels);
@ -78,7 +78,7 @@ find_paths(Query *root, List *rels)
/*
* Unsorted single relation, no more processing is required.
*/
return rels;
return lfirst(rels);
}
else
{
@ -88,7 +88,7 @@ find_paths(Query *root, List *rels)
*/
set_rest_relselec(root, rels);
return find_join_paths(root, rels, levels_needed);
return make_one_rel_by_joins(root, rels, levels_needed);
}
}
@ -142,7 +142,7 @@ find_base_rel_paths(Query *root, List *rels)
}
/*
* 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.
*
@ -158,8 +158,8 @@ find_base_rel_paths(Query *root, List *rels)
* 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;
@ -170,7 +170,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
* <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 *
@ -184,7 +184,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
* 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);
@ -202,9 +202,9 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
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
@ -213,6 +213,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
*/
add_new_joininfos(root, joined_rels, outer_rels);
}
#endif
foreach(x, joined_rels)
{
@ -228,6 +229,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
#endif
}
#ifdef NOT_USED
if (BushyPlanFlag)
{
/*
@ -243,16 +245,24 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
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);
}
/*****************************************************************************

18
src/backend/optimizer/path/costsize.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -440,21 +440,19 @@ compute_joinrel_size(JoinPath *joinpath)
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;

16
src/backend/optimizer/path/indxpath.c
View File

@ -8,7 +8,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -1302,13 +1302,13 @@ index_innerjoin(Query *root, RelOptInfo *rel, List *clausegroup_list,
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

3
src/backend/optimizer/path/joinpath.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -78,6 +78,7 @@ update_rels_pathlist_for_joins(Query *root, List *joinrels)
Path *bestinnerjoin;
List *pathlist = NIL;
/* flatten out relids later in this function */
innerrelids = lsecond(joinrel->relids);
outerrelids = lfirst(joinrel->relids);

97
src/backend/optimizer/path/joinrels.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -31,20 +31,15 @@ bool _use_right_sided_plans_ = false;
#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
@ -57,7 +52,7 @@ static void set_joinrel_size(RelOptInfo *joinrel, RelOptInfo *outer_rel, RelOptI
* 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;
@ -67,16 +62,20 @@ make_new_rels_by_joins(Query *root, List *outer_rels)
{
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);
@ -86,7 +85,7 @@ make_new_rels_by_joins(Query *root, List *outer_rels)
}
/*
* 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'
@ -100,8 +99,9 @@ make_new_rels_by_joins(Query *root, List *outer_rels)
*
* 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;
@ -111,15 +111,18 @@ find_clause_joins(Query *root, RelOptInfo *outer_rel, List *joininfo_list)
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 ? */
@ -128,18 +131,20 @@ find_clause_joins(Query *root, RelOptInfo *outer_rel, List *joininfo_list)
{
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;
@ -153,15 +158,15 @@ find_clause_joins(Query *root, RelOptInfo *outer_rel, List *joininfo_list)
}
/*
* 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;
@ -173,7 +178,7 @@ find_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels)
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));
}
@ -183,7 +188,7 @@ find_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels)
}
/*
* 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
@ -193,8 +198,8 @@ find_clauseless_joins(RelOptInfo *outer_rel, List *inner_rels)
*
* 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;
@ -217,7 +222,7 @@ init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
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;
@ -229,9 +234,11 @@ init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
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;
@ -239,8 +246,10 @@ init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
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),
@ -269,7 +278,7 @@ init_join_rel(RelOptInfo *outer_rel, RelOptInfo *inner_rel, JoinInfo * joininfo)
*
* Returns the new target list.
*/
static List *
List *
new_join_tlist(List *tlist,
List *other_relids,
int first_resdomno)
@ -352,7 +361,7 @@ new_joininfo_list(List *joininfo_list, List *join_relids)
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);
@ -418,7 +427,7 @@ add_new_joininfos(Query *root, List *joinrels, List *outerrels)
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)
@ -444,7 +453,7 @@ add_new_joininfos(Query *root, List *joinrels, List *outerrels)
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);
}
@ -461,6 +470,7 @@ add_new_joininfos(Query *root, List *joinrels, List *outerrels)
}
}
#ifdef NOT_USED
/*
* final_join_rels
* Find the join relation that includes all the original
@ -470,11 +480,11 @@ add_new_joininfos(Query *root, List *joinrels, List *outerrels)
*
* 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
@ -497,13 +507,14 @@ final_join_rels(List *join_rel_list)
}
}
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
@ -551,7 +562,7 @@ nonoverlap_sets(List *s1, List *s2)
}
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;

3
src/backend/optimizer/path/mergeutils.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -47,7 +47,6 @@ group_clauses_by_order(List *restrictinfo_list,
if (merge_ordering)
{
/*
* Create a new mergeinfo node and add it to 'mergeinfo_list'
* if one does not yet exist for this merge ordering.

10
src/backend/optimizer/path/prune.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -106,7 +106,7 @@ rels_set_cheapest(List *rel_list)
}
}
#ifdef NOT_USED
/*
* merge_joinrels
* Given two lists of rel nodes that are already
@ -133,7 +133,7 @@ merge_joinrels(List *rel_list1, List *rel_list2)
/*
* 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
@ -165,7 +165,7 @@ prune_oldrels(List *old_rels)
{
JoinInfo *joininfo = (JoinInfo *) lfirst(xjoininfo);
if (!joininfo->inactive)
if (!joininfo->bushy_inactive)
{
temp_list = lcons(rel, temp_list);
break;
@ -175,3 +175,5 @@ prune_oldrels(List *old_rels)
}
return temp_list;
}
#endif

8
src/backend/optimizer/plan/initsplan.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -339,14 +339,14 @@ set_joininfo_mergeable_hashable(List *rel_list)
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;

13
src/backend/optimizer/plan/planmain.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -215,7 +215,6 @@ query_planner(Query *root,
}
#ifdef NOT_USED
/*
* Destructively modify the query plan's targetlist to add fjoin lists
* to flatten functions that return sets of base types
@ -243,7 +242,6 @@ subplanner(Query *root,
List *qual)
{
RelOptInfo *final_rel;
List *final_rel_list;
/*
* Initialize the targetlist and qualification, adding entries to
@ -259,12 +257,7 @@ subplanner(Query *root,
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 */
@ -297,7 +290,7 @@ subplanner(Query *root,
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);
}

4
src/backend/optimizer/util/joininfo.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -74,7 +74,7 @@ find_joininfo_node(RelOptInfo *this_rel, List *join_relids)
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;

18
src/backend/optimizer/util/pathnode.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -381,15 +381,15 @@ create_index_path(Query *root,
/* 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 +

4
src/backend/optimizer/util/relnode.c
View File

@ -7,7 +7,7 @@
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -64,14 +64,12 @@ get_base_rel(Query *root, int relid)
*/
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
{

8
src/backend/tcop/postgres.c
View File

@ -7,7 +7,7 @@
*
*
* 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
@ -173,8 +173,10 @@ int UseNewLine = 0; /* Use EOF as query delimiters */
* 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
@ -1041,6 +1043,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
#endif
break;
#ifdef NOT_USED
case 'b':
/* ----------------
* set BushyPlanFlag to true.
@ -1048,6 +1051,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
*/
BushyPlanFlag = 1;
break;
#endif
case 'B':
/* ----------------
@ -1538,7 +1542,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
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");
}
/* ----------------

4
src/include/nodes/relation.h
View File

@ -6,7 +6,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -250,7 +250,7 @@ typedef struct JoinInfo
List *jinfo_restrictinfo;
bool mergejoinable;
bool hashjoinable;
bool inactive;
bool bushy_inactive;
} JoinInfo;
typedef struct Iter

28
src/include/optimizer/geqo_paths.h
View File

@ -1,28 +0,0 @@
/*-------------------------------------------------------------------------
*
* 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 */

4
src/include/optimizer/internal.h
View File

@ -6,7 +6,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -80,7 +80,9 @@
#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 */

15
src/include/optimizer/paths.h
View File

@ -7,7 +7,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -21,7 +21,7 @@
/*
* allpaths.h
*/
extern List *find_paths(Query *root, List *rels);
extern RelOptInfo *make_one_rel(Query *root, List *rels);
/*
* indxpath.h
@ -77,16 +77,19 @@ extern MergeInfo *match_order_mergeinfo(PathOrder *ordering,
* 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 */

13
src/include/storage/proc.h
View File

@ -6,7 +6,7 @@
*
* 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 $
*
*-------------------------------------------------------------------------
*/
@ -75,8 +75,15 @@ typedef struct procglobal
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