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Add a back-link from IndexOptInfo structs to their parent RelOptInfo

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structs.  There are many places in the planner where we were passing
both a rel and an index to subroutines, and now need only pass the
index struct.  Notationally simpler, and perhaps a tad faster.
This commit is contained in:
Tom Lane 2005-03-27 06:29:49 +00:00
parent febc9a613c
commit 926e8a00d3
11 changed files with 95 additions and 141 deletions
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5
src/backend/optimizer/path/costsize.c
View File

@ -49,7 +49,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.138 2005/03/06 22:15:04 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.139 2005/03/27 06:29:35 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -227,7 +227,6 @@ cost_nonsequential_access(double relpages)
* but here we consider the cost of just one pass.
*
* 'root' is the query root
* 'baserel' is the base relation the index is for
* 'index' is the index to be used
* 'indexQuals' is the list of applicable qual clauses (implicit AND semantics)
* 'is_injoin' is T if we are considering using the index scan as the inside
@ -243,11 +242,11 @@ cost_nonsequential_access(double relpages)
*/
void
cost_index(Path *path, Query *root,
RelOptInfo *baserel,
IndexOptInfo *index,
List *indexQuals,
bool is_injoin)
{
RelOptInfo *baserel = index->rel;
Cost startup_cost = 0;
Cost run_cost = 0;
Cost indexStartupCost;

145
src/backend/optimizer/path/indxpath.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/indxpath.c,v 1.170 2005/03/26 23:29:17 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/indxpath.c,v 1.171 2005/03/27 06:29:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -54,36 +54,31 @@
((opclass) == BOOL_BTREE_OPS_OID || (opclass) == BOOL_HASH_OPS_OID)
static List *group_clauses_by_indexkey(RelOptInfo *rel, IndexOptInfo *index);
static List *group_clauses_by_indexkey(IndexOptInfo *index);
static List *group_clauses_by_indexkey_for_join(Query *root,
RelOptInfo *rel, IndexOptInfo *index,
IndexOptInfo *index,
Relids outer_relids,
JoinType jointype, bool isouterjoin);
static bool match_clause_to_indexcol(RelOptInfo *rel, IndexOptInfo *index,
static bool match_clause_to_indexcol(IndexOptInfo *index,
int indexcol, Oid opclass,
RestrictInfo *rinfo);
static bool match_join_clause_to_indexcol(RelOptInfo *rel, IndexOptInfo *index,
static bool match_join_clause_to_indexcol(IndexOptInfo *index,
int indexcol, Oid opclass,
RestrictInfo *rinfo);
static Oid indexable_operator(Expr *clause, Oid opclass,
bool indexkey_on_left);
static bool pred_test_recurse(Node *clause, Node *predicate);
static bool pred_test_simple_clause(Expr *predicate, Node *clause);
static Relids indexable_outerrelids(RelOptInfo *rel, IndexOptInfo *index);
static Path *make_innerjoin_index_path(Query *root,
RelOptInfo *rel, IndexOptInfo *index,
static Relids indexable_outerrelids(IndexOptInfo *index);
static Path *make_innerjoin_index_path(Query *root, IndexOptInfo *index,
List *clausegroups);
static bool match_index_to_operand(Node *operand, int indexcol,
RelOptInfo *rel, IndexOptInfo *index);
static bool match_boolean_index_clause(Node *clause,
int indexcol,
RelOptInfo *rel,
IndexOptInfo *index);
static bool match_boolean_index_clause(Node *clause, int indexcol,
IndexOptInfo *index);
static bool match_special_index_operator(Expr *clause, Oid opclass,
bool indexkey_on_left);
static Expr *expand_boolean_index_clause(Node *clause,
int indexcol,
RelOptInfo *rel,
static Expr *expand_boolean_index_clause(Node *clause, int indexcol,
IndexOptInfo *index);
static List *expand_indexqual_condition(RestrictInfo *rinfo, Oid opclass);
static List *prefix_quals(Node *leftop, Oid opclass,
@ -148,13 +143,13 @@ create_index_paths(Query *root, RelOptInfo *rel)
* 1. Match the index against non-OR restriction clauses. (OR
* clauses will be considered later by orindxpath.c.)
*/
restrictclauses = group_clauses_by_indexkey(rel, index);
restrictclauses = group_clauses_by_indexkey(index);
/*
* 2. Compute pathkeys describing index's ordering, if any, then
* see how many of them are actually useful for this query.
*/
index_pathkeys = build_index_pathkeys(root, rel, index,
index_pathkeys = build_index_pathkeys(root, index,
ForwardScanDirection);
index_is_ordered = (index_pathkeys != NIL);
useful_pathkeys = truncate_useless_pathkeys(root, rel,
@ -173,7 +168,7 @@ create_index_paths(Query *root, RelOptInfo *rel)
useful_pathkeys != NIL ||
index->indpred != NIL)
add_path(rel, (Path *)
create_index_path(root, rel, index,
create_index_path(root, index,
restrictclauses,
useful_pathkeys,
index_is_ordered ?
@ -187,13 +182,13 @@ create_index_paths(Query *root, RelOptInfo *rel)
*/
if (index_is_ordered)
{
index_pathkeys = build_index_pathkeys(root, rel, index,
index_pathkeys = build_index_pathkeys(root, index,
BackwardScanDirection);
useful_pathkeys = truncate_useless_pathkeys(root, rel,
index_pathkeys);
if (useful_pathkeys != NIL)
add_path(rel, (Path *)
create_index_path(root, rel, index,
create_index_path(root, index,
restrictclauses,
useful_pathkeys,
BackwardScanDirection));
@ -207,7 +202,7 @@ create_index_paths(Query *root, RelOptInfo *rel)
* joining purposes. We compute both per-index and
* overall-for-relation sets.
*/
join_outerrelids = indexable_outerrelids(rel, index);
join_outerrelids = indexable_outerrelids(index);
index->outer_relids = join_outerrelids;
all_join_outerrelids = bms_add_members(all_join_outerrelids,
join_outerrelids);
@ -226,9 +221,6 @@ create_index_paths(Query *root, RelOptInfo *rel)
* group_clauses_by_indexkey
* Find restriction clauses that can be used with an index.
*
* 'rel' is the node of the relation itself.
* 'index' is a index on 'rel'.
*
* Returns a list of sublists of RestrictInfo nodes for clauses that can be
* used with this index. Each sublist contains clauses that can be used
* with one index key (in no particular order); the top list is ordered by
@ -243,10 +235,10 @@ create_index_paths(Query *root, RelOptInfo *rel)
* Therefore, there are no empty sublists in the result.
*/
static List *
group_clauses_by_indexkey(RelOptInfo *rel, IndexOptInfo *index)
group_clauses_by_indexkey(IndexOptInfo *index)
{
List *clausegroup_list = NIL;
List *restrictinfo_list = rel->baserestrictinfo;
List *restrictinfo_list = index->rel->baserestrictinfo;
int indexcol = 0;
Oid *classes = index->classlist;
@ -263,8 +255,7 @@ group_clauses_by_indexkey(RelOptInfo *rel, IndexOptInfo *index)
{
RestrictInfo *rinfo = (RestrictInfo *) lfirst(l);
if (match_clause_to_indexcol(rel,
index,
if (match_clause_to_indexcol(index,
indexcol,
curClass,
rinfo))
@ -302,8 +293,7 @@ group_clauses_by_indexkey(RelOptInfo *rel, IndexOptInfo *index)
* will already have been generated for it.)
*/
static List *
group_clauses_by_indexkey_for_join(Query *root,
RelOptInfo *rel, IndexOptInfo *index,
group_clauses_by_indexkey_for_join(Query *root, IndexOptInfo *index,
Relids outer_relids,
JoinType jointype, bool isouterjoin)
{
@ -327,7 +317,7 @@ group_clauses_by_indexkey_for_join(Query *root,
* to get rid of a non-join clause if it appears after a join
* clause it is redundant with.
*/
foreach(l, rel->baserestrictinfo)
foreach(l, index->rel->baserestrictinfo)
{
RestrictInfo *rinfo = (RestrictInfo *) lfirst(l);
@ -335,8 +325,7 @@ group_clauses_by_indexkey_for_join(Query *root,
if (isouterjoin && rinfo->is_pushed_down)
continue;
if (match_clause_to_indexcol(rel,
index,
if (match_clause_to_indexcol(index,
indexcol,
curClass,
rinfo))
@ -347,7 +336,7 @@ group_clauses_by_indexkey_for_join(Query *root,
numsources = (clausegroup != NIL) ? 1 : 0;
/* Look for joinclauses that are usable with given outer_relids */
foreach(l, rel->joininfo)
foreach(l, index->rel->joininfo)
{
JoinInfo *joininfo = (JoinInfo *) lfirst(l);
bool jfoundhere = false;
@ -364,8 +353,7 @@ group_clauses_by_indexkey_for_join(Query *root,
if (isouterjoin && rinfo->is_pushed_down)
continue;
if (match_join_clause_to_indexcol(rel,
index,
if (match_join_clause_to_indexcol(index,
indexcol,
curClass,
rinfo))
@ -434,9 +422,7 @@ group_clauses_by_indexkey_for_join(Query *root,
* restriction clause as qpquals. FIXME someday.
*/
List *
group_clauses_by_indexkey_for_or(RelOptInfo *rel,
IndexOptInfo *index,
Expr *orsubclause)
group_clauses_by_indexkey_for_or(IndexOptInfo *index, Expr *orsubclause)
{
List *clausegroup_list = NIL;
bool matched = false;
@ -452,8 +438,7 @@ group_clauses_by_indexkey_for_or(RelOptInfo *rel,
/* Try to match the OR subclause to the index key */
if (IsA(orsubclause, RestrictInfo))
{
if (match_clause_to_indexcol(rel, index,
indexcol, curClass,
if (match_clause_to_indexcol(index, indexcol, curClass,
(RestrictInfo *) orsubclause))
{
clausegroup = lappend(clausegroup, orsubclause);
@ -467,8 +452,7 @@ group_clauses_by_indexkey_for_or(RelOptInfo *rel,
RestrictInfo *subsubclause = (RestrictInfo *) lfirst(item);
if (IsA(subsubclause, RestrictInfo) &&
match_clause_to_indexcol(rel, index,
indexcol, curClass,
match_clause_to_indexcol(index, indexcol, curClass,
subsubclause))
{
clausegroup = lappend(clausegroup, subsubclause);
@ -486,12 +470,11 @@ group_clauses_by_indexkey_for_or(RelOptInfo *rel,
*/
if (clausegroup == NIL)
{
foreach(item, rel->baserestrictinfo)
foreach(item, index->rel->baserestrictinfo)
{
RestrictInfo *rinfo = (RestrictInfo *) lfirst(item);
if (match_clause_to_indexcol(rel, index,
indexcol, curClass,
if (match_clause_to_indexcol(index, indexcol, curClass,
rinfo))
clausegroup = lappend(clausegroup, rinfo);
}
@ -539,8 +522,7 @@ group_clauses_by_indexkey_for_or(RelOptInfo *rel,
* For boolean indexes, it is also possible to match the clause directly
* to the indexkey; or perhaps the clause is (NOT indexkey).
*
* 'rel' is the relation of interest.
* 'index' is an index on 'rel'.
* 'index' is the index of interest.
* 'indexcol' is a column number of 'index' (counting from 0).
* 'opclass' is the corresponding operator class.
* 'rinfo' is the clause to be tested (as a RestrictInfo node).
@ -551,8 +533,7 @@ group_clauses_by_indexkey_for_or(RelOptInfo *rel,
* responsibility of higher-level routines to cope with those.
*/
static bool
match_clause_to_indexcol(RelOptInfo *rel,
IndexOptInfo *index,
match_clause_to_indexcol(IndexOptInfo *index,
int indexcol,
Oid opclass,
RestrictInfo *rinfo)
@ -564,8 +545,7 @@ match_clause_to_indexcol(RelOptInfo *rel,
/* First check for boolean-index cases. */
if (IsBooleanOpclass(opclass))
{
if (match_boolean_index_clause((Node *) clause,
indexcol, rel, index))
if (match_boolean_index_clause((Node *) clause, indexcol, index))
return true;
}
@ -582,7 +562,7 @@ match_clause_to_indexcol(RelOptInfo *rel,
* (constant operator indexkey). Anything that is a "pseudo constant"
* expression will do.
*/
if (match_index_to_operand(leftop, indexcol, rel, index) &&
if (match_index_to_operand(leftop, indexcol, index) &&
is_pseudo_constant_clause_relids(rightop, rinfo->right_relids))
{
if (is_indexable_operator(clause, opclass, true))
@ -597,7 +577,7 @@ match_clause_to_indexcol(RelOptInfo *rel,
return false;
}
if (match_index_to_operand(rightop, indexcol, rel, index) &&
if (match_index_to_operand(rightop, indexcol, index) &&
is_pseudo_constant_clause_relids(leftop, rinfo->left_relids))
{
if (is_indexable_operator(clause, opclass, false))
@ -638,8 +618,7 @@ match_clause_to_indexcol(RelOptInfo *rel,
* expressions like (a.f1 OP (b.f2 OP a.f3)); that's not processable by
* an indexscan nestloop join, whereas (a.f1 OP (b.f2 OP c.f3)) is.
*
* 'rel' is the relation of interest.
* 'index' is an index on 'rel'.
* 'index' is the index of interest.
* 'indexcol' is a column number of 'index' (counting from 0).
* 'opclass' is the corresponding operator class.
* 'rinfo' is the clause to be tested (as a RestrictInfo node).
@ -650,8 +629,7 @@ match_clause_to_indexcol(RelOptInfo *rel,
* responsibility of higher-level routines to cope with those.
*/
static bool
match_join_clause_to_indexcol(RelOptInfo *rel,
IndexOptInfo *index,
match_join_clause_to_indexcol(IndexOptInfo *index,
int indexcol,
Oid opclass,
RestrictInfo *rinfo)
@ -674,25 +652,25 @@ match_join_clause_to_indexcol(RelOptInfo *rel,
* none of the indexed relation's vars and contains no volatile
* functions.
*/
if (match_index_to_operand(leftop, indexcol, rel, index))
if (match_index_to_operand(leftop, indexcol, index))
{
Relids othervarnos = rinfo->right_relids;
bool isIndexable;
isIndexable =
!bms_overlap(rel->relids, othervarnos) &&
!bms_overlap(index->rel->relids, othervarnos) &&
!contain_volatile_functions(rightop) &&
is_indexable_operator(clause, opclass, true);
return isIndexable;
}
if (match_index_to_operand(rightop, indexcol, rel, index))
if (match_index_to_operand(rightop, indexcol, index))
{
Relids othervarnos = rinfo->left_relids;
bool isIndexable;
isIndexable =
!bms_overlap(rel->relids, othervarnos) &&
!bms_overlap(index->rel->relids, othervarnos) &&
!contain_volatile_functions(leftop) &&
is_indexable_operator(clause, opclass, false);
return isIndexable;
@ -1423,16 +1401,14 @@ pred_test_simple_clause(Expr *predicate, Node *clause)
* indexable_outerrelids
* Finds all other relids that participate in any indexable join clause
* for the specified index. Returns a set of relids.
*
* 'rel' is the relation for which 'index' is defined
*/
static Relids
indexable_outerrelids(RelOptInfo *rel, IndexOptInfo *index)
indexable_outerrelids(IndexOptInfo *index)
{
Relids outer_relids = NULL;
ListCell *l;
foreach(l, rel->joininfo)
foreach(l, index->rel->joininfo)
{
JoinInfo *joininfo = (JoinInfo *) lfirst(l);
bool match_found = false;
@ -1455,8 +1431,7 @@ indexable_outerrelids(RelOptInfo *rel, IndexOptInfo *index)
{
Oid curClass = classes[0];
if (match_join_clause_to_indexcol(rel,
index,
if (match_join_clause_to_indexcol(index,
indexcol,
curClass,
rinfo))
@ -1614,7 +1589,6 @@ best_inner_indexscan(Query *root, RelOptInfo *rel,
/* find useful clauses for this index and outerjoin set */
clausegroups = group_clauses_by_indexkey_for_join(root,
rel,
index,
index_outer_relids,
jointype,
@ -1622,8 +1596,7 @@ best_inner_indexscan(Query *root, RelOptInfo *rel,
if (clausegroups)
{
/* make the path */
path = make_innerjoin_index_path(root, rel, index,
clausegroups);
path = make_innerjoin_index_path(root, index, clausegroups);
}
/* Cache the result --- whether positive or negative */
@ -1661,15 +1634,16 @@ best_inner_indexscan(Query *root, RelOptInfo *rel,
* Create an index path node for a path to be used as an inner
* relation in a nestloop join.
*
* 'rel' is the relation for which 'index' is defined
* 'index' is the index of interest
* 'clausegroups' is a list of lists of RestrictInfos that can use 'index'
*/
static Path *
make_innerjoin_index_path(Query *root,
RelOptInfo *rel, IndexOptInfo *index,
IndexOptInfo *index,
List *clausegroups)
{
IndexPath *pathnode = makeNode(IndexPath);
RelOptInfo *rel = index->rel;
List *indexquals,
*allclauses;
@ -1686,7 +1660,7 @@ make_innerjoin_index_path(Query *root,
pathnode->path.pathkeys = NIL;
/* Convert clauses to indexquals the executor can handle */
indexquals = expand_indexqual_conditions(rel, index, clausegroups);
indexquals = expand_indexqual_conditions(index, clausegroups);
/* Flatten the clausegroups list to produce indexclauses list */
allclauses = flatten_clausegroups_list(clausegroups);
@ -1729,7 +1703,7 @@ make_innerjoin_index_path(Query *root,
/* Like costsize.c, force estimate to be at least one row */
pathnode->rows = clamp_row_est(pathnode->rows);
cost_index(&pathnode->path, root, rel, index, indexquals, true);
cost_index(&pathnode->path, root, index, indexquals, true);
return (Path *) pathnode;
}
@ -1798,13 +1772,11 @@ make_expr_from_indexclauses(List *indexclauses)
*
* operand: the nodetree to be compared to the index
* indexcol: the column number of the index (counting from 0)
* rel: the parent relation
* index: the index of interest
*/
static bool
match_index_to_operand(Node *operand,
int indexcol,
RelOptInfo *rel,
IndexOptInfo *index)
{
int indkey;
@ -1825,7 +1797,7 @@ match_index_to_operand(Node *operand,
* Simple index column; operand must be a matching Var.
*/
if (operand && IsA(operand, Var) &&
rel->relid == ((Var *) operand)->varno &&
index->rel->relid == ((Var *) operand)->varno &&
indkey == ((Var *) operand)->varattno)
return true;
}
@ -1933,17 +1905,16 @@ match_index_to_operand(Node *operand,
static bool
match_boolean_index_clause(Node *clause,
int indexcol,
RelOptInfo *rel,
IndexOptInfo *index)
{
/* Direct match? */
if (match_index_to_operand(clause, indexcol, rel, index))
if (match_index_to_operand(clause, indexcol, index))
return true;
/* NOT clause? */
if (not_clause(clause))
{
if (match_index_to_operand((Node *) get_notclausearg((Expr *) clause),
indexcol, rel, index))
indexcol, index))
return true;
}
/*
@ -1958,7 +1929,7 @@ match_boolean_index_clause(Node *clause,
if (btest->booltesttype == IS_TRUE ||
btest->booltesttype == IS_FALSE)
if (match_index_to_operand((Node *) btest->arg,
indexcol, rel, index))
indexcol, index))
return true;
}
return false;
@ -2135,7 +2106,7 @@ match_special_index_operator(Expr *clause, Oid opclass,
* someday --- tgl 7/00)
*/
List *
expand_indexqual_conditions(RelOptInfo *rel, IndexOptInfo *index, List *clausegroups)
expand_indexqual_conditions(IndexOptInfo *index, List *clausegroups)
{
List *resultquals = NIL;
ListCell *clausegroup_item;
@ -2162,7 +2133,6 @@ expand_indexqual_conditions(RelOptInfo *rel, IndexOptInfo *index, List *clausegr
boolqual = expand_boolean_index_clause((Node *) rinfo->clause,
indexcol,
rel,
index);
if (boolqual)
{
@ -2199,11 +2169,10 @@ expand_indexqual_conditions(RelOptInfo *rel, IndexOptInfo *index, List *clausegr
static Expr *
expand_boolean_index_clause(Node *clause,
int indexcol,
RelOptInfo *rel,
IndexOptInfo *index)
{
/* Direct match? */
if (match_index_to_operand(clause, indexcol, rel, index))
if (match_index_to_operand(clause, indexcol, index))
{
/* convert to indexkey = TRUE */
return make_opclause(BooleanEqualOperator, BOOLOID, false,
@ -2216,7 +2185,7 @@ expand_boolean_index_clause(Node *clause,
Node *arg = (Node *) get_notclausearg((Expr *) clause);
/* It must have matched the indexkey */
Assert(match_index_to_operand(arg, indexcol, rel, index));
Assert(match_index_to_operand(arg, indexcol, index));
/* convert to indexkey = FALSE */
return make_opclause(BooleanEqualOperator, BOOLOID, false,
(Expr *) arg,
@ -2228,7 +2197,7 @@ expand_boolean_index_clause(Node *clause,
Node *arg = (Node *) btest->arg;
/* It must have matched the indexkey */
Assert(match_index_to_operand(arg, indexcol, rel, index));
Assert(match_index_to_operand(arg, indexcol, index));
if (btest->booltesttype == IS_TRUE)
{
/* convert to indexkey = TRUE */

8
src/backend/optimizer/path/orindxpath.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/orindxpath.c,v 1.66 2005/03/26 23:29:17 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/orindxpath.c,v 1.67 2005/03/27 06:29:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -383,7 +383,7 @@ best_or_subclause_index(Query *root,
}
/* Collect index clauses usable with this index */
indexclauses = group_clauses_by_indexkey_for_or(rel, index, subclause);
indexclauses = group_clauses_by_indexkey_for_or(index, subclause);
/*
* Ignore index if it doesn't match the subclause at all; except
@ -398,9 +398,9 @@ best_or_subclause_index(Query *root,
continue;
/* Convert clauses to indexquals the executor can handle */
indexquals = expand_indexqual_conditions(rel, index, indexclauses);
indexquals = expand_indexqual_conditions(index, indexclauses);
cost_index(&subclause_path, root, rel, index, indexquals, false);
cost_index(&subclause_path, root, index, indexquals, false);
if (!found || subclause_path.total_cost < *retTotalCost)
{

6
src/backend/optimizer/path/pathkeys.c
View File

@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.64 2005/01/23 02:21:26 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.65 2005/03/27 06:29:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -648,7 +648,6 @@ get_cheapest_fractional_path_for_pathkeys(List *paths,
*/
List *
build_index_pathkeys(Query *root,
RelOptInfo *rel,
IndexOptInfo *index,
ScanDirection scandir)
{
@ -675,7 +674,8 @@ build_index_pathkeys(Query *root,
if (*indexkeys != 0)
{
/* simple index column */
indexkey = (Node *) find_indexkey_var(root, rel, *indexkeys);
indexkey = (Node *) find_indexkey_var(root, index->rel,
*indexkeys);
}
else
{

29
src/backend/optimizer/plan/createplan.c
View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.176 2005/03/10 23:21:22 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.177 2005/03/27 06:29:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -65,16 +65,13 @@ static void fix_indxqual_references(List *indexquals, IndexPath *index_path,
List **indxstrategy,
List **indxsubtype,
List **indxlossy);
static void fix_indxqual_sublist(List *indexqual,
Relids baserelids, int baserelid,
IndexOptInfo *index,
static void fix_indxqual_sublist(List *indexqual, IndexOptInfo *index,
List **fixed_quals,
List **strategy,
List **subtype,
List **lossy);
static Node *fix_indxqual_operand(Node *node, int baserelid,
IndexOptInfo *index,
Oid *opclass);
static Node *fix_indxqual_operand(Node *node, IndexOptInfo *index,
Oid *opclass);
static List *get_switched_clauses(List *clauses, Relids outerrelids);
static List *order_qual_clauses(Query *root, List *clauses);
static void copy_path_costsize(Plan *dest, Path *src);
@ -1179,8 +1176,6 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
List **indxsubtype,
List **indxlossy)
{
Relids baserelids = index_path->path.parent->relids;
int baserelid = index_path->path.parent->relid;
List *index_info = index_path->indexinfo;
ListCell *iq,
*ii;
@ -1198,7 +1193,7 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
List *subtype;
List *lossy;
fix_indxqual_sublist(indexqual, baserelids, baserelid, index,
fix_indxqual_sublist(indexqual, index,
&fixed_qual, &strategy, &subtype, &lossy);
*fixed_indexquals = lappend(*fixed_indexquals, fixed_qual);
*indxstrategy = lappend(*indxstrategy, strategy);
@ -1222,9 +1217,7 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
* the integer list of lossiness flags (1/0)
*/
static void
fix_indxqual_sublist(List *indexqual,
Relids baserelids, int baserelid,
IndexOptInfo *index,
fix_indxqual_sublist(List *indexqual, IndexOptInfo *index,
List **fixed_quals,
List **strategy,
List **subtype,
@ -1265,7 +1258,7 @@ fix_indxqual_sublist(List *indexqual,
* the clause. The indexkey should be the side that refers to
* (only) the base relation.
*/
if (!bms_equal(rinfo->left_relids, baserelids))
if (!bms_equal(rinfo->left_relids, index->rel->relids))
CommuteClause(newclause);
/*
@ -1273,7 +1266,6 @@ fix_indxqual_sublist(List *indexqual,
* indexkey operand as needed, and get the index opclass.
*/
linitial(newclause->args) = fix_indxqual_operand(linitial(newclause->args),
baserelid,
index,
&opclass);
@ -1295,8 +1287,7 @@ fix_indxqual_sublist(List *indexqual,
}
static Node *
fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
Oid *opclass)
fix_indxqual_operand(Node *node, IndexOptInfo *index, Oid *opclass)
{
/*
* We represent index keys by Var nodes having the varno of the base
@ -1316,7 +1307,7 @@ fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
node = (Node *) ((RelabelType *) node)->arg;
if (IsA(node, Var) &&
((Var *) node)->varno == baserelid)
((Var *) node)->varno == index->rel->relid)
{
/* Try to match against simple index columns */
int varatt = ((Var *) node)->varattno;
@ -1353,7 +1344,7 @@ fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
if (equal(node, indexkey))
{
/* Found a match */
result = makeVar(baserelid, pos + 1,
result = makeVar(index->rel->relid, pos + 1,
exprType(lfirst(indexpr_item)), -1,
0);
/* return the correct opclass, too */

14
src/backend/optimizer/util/pathnode.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.113 2005/03/26 23:29:18 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.114 2005/03/27 06:29:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -417,8 +417,7 @@ create_seqscan_path(Query *root, RelOptInfo *rel)
* create_index_path
* Creates a path node for an index scan.
*
* 'rel' is the parent rel
* 'index' is an index on 'rel'
* 'index' is a usable index.
* 'restriction_clauses' is a list of lists of RestrictInfo nodes
* to be used as index qual conditions in the scan.
* 'pathkeys' describes the ordering of the path.
@ -430,7 +429,6 @@ create_seqscan_path(Query *root, RelOptInfo *rel)
*/
IndexPath *
create_index_path(Query *root,
RelOptInfo *rel,
IndexOptInfo *index,
List *restriction_clauses,
List *pathkeys,
@ -440,11 +438,11 @@ create_index_path(Query *root,
List *indexquals;
pathnode->path.pathtype = T_IndexScan;
pathnode->path.parent = rel;
pathnode->path.parent = index->rel;
pathnode->path.pathkeys = pathkeys;
/* Convert clauses to indexquals the executor can handle */
indexquals = expand_indexqual_conditions(rel, index, restriction_clauses);
indexquals = expand_indexqual_conditions(index, restriction_clauses);
/* Flatten the clause-groups list to produce indexclauses list */
restriction_clauses = flatten_clausegroups_list(restriction_clauses);
@ -466,9 +464,9 @@ create_index_path(Query *root,
* The number of rows is the same as the parent rel's estimate, since
* this isn't a join inner indexscan.
*/
pathnode->rows = rel->rows;
pathnode->rows = index->rel->rows;
cost_index(&pathnode->path, root, rel, index, indexquals, false);
cost_index(&pathnode->path, root, index, indexquals, false);
return pathnode;
}

3
src/backend/optimizer/util/plancat.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/plancat.c,v 1.101 2005/03/24 19:14:49 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/plancat.c,v 1.102 2005/03/27 06:29:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -124,6 +124,7 @@ get_relation_info(Oid relationObjectId, RelOptInfo *rel)
info = makeNode(IndexOptInfo);
info->indexoid = index->indexrelid;
info->rel = rel;
info->ncolumns = ncolumns = index->indnatts;
/*

3
src/include/nodes/relation.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.103 2005/02/21 06:43:04 neilc Exp $
* $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.104 2005/03/27 06:29:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -253,6 +253,7 @@ typedef struct IndexOptInfo
NodeTag type;
Oid indexoid; /* OID of the index relation */
RelOptInfo *rel; /* back-link to index's table */
/* statistics from pg_class */
BlockNumber pages; /* number of disk pages in index */

8
src/include/optimizer/cost.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/cost.h,v 1.62 2004/12/31 22:03:36 pgsql Exp $
* $PostgreSQL: pgsql/src/include/optimizer/cost.h,v 1.63 2005/03/27 06:29:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -50,10 +50,8 @@ extern bool enable_mergejoin;
extern bool enable_hashjoin;
extern double clamp_row_est(double nrows);
extern void cost_seqscan(Path *path, Query *root,
RelOptInfo *baserel);
extern void cost_index(Path *path, Query *root,
RelOptInfo *baserel, IndexOptInfo *index,
extern void cost_seqscan(Path *path, Query *root, RelOptInfo *baserel);
extern void cost_index(Path *path, Query *root, IndexOptInfo *index,
List *indexQuals, bool is_injoin);
extern void cost_tidscan(Path *path, Query *root,
RelOptInfo *baserel, List *tideval);

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

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/pathnode.h,v 1.56 2004/12/31 22:03:36 pgsql Exp $
* $PostgreSQL: pgsql/src/include/optimizer/pathnode.h,v 1.57 2005/03/27 06:29:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -28,7 +28,7 @@ extern void set_cheapest(RelOptInfo *parent_rel);
extern void add_path(RelOptInfo *parent_rel, Path *new_path);
extern Path *create_seqscan_path(Query *root, RelOptInfo *rel);
extern IndexPath *create_index_path(Query *root, RelOptInfo *rel,
extern IndexPath *create_index_path(Query *root,
IndexOptInfo *index,
List *restriction_clauses,
List *pathkeys,

11
src/include/optimizer/paths.h
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.79 2005/03/26 23:29:20 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.80 2005/03/27 06:29:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -38,11 +38,9 @@ extern void debug_print_rel(Query *root, RelOptInfo *rel);
extern void create_index_paths(Query *root, RelOptInfo *rel);
extern Path *best_inner_indexscan(Query *root, RelOptInfo *rel,
Relids outer_relids, JoinType jointype);
extern List *group_clauses_by_indexkey_for_or(RelOptInfo *rel,
IndexOptInfo *index,
extern List *group_clauses_by_indexkey_for_or(IndexOptInfo *index,
Expr *orsubclause);
extern List *expand_indexqual_conditions(RelOptInfo *rel,
IndexOptInfo *index,
extern List *expand_indexqual_conditions(IndexOptInfo *index,
List *clausegroups);
extern void check_partial_indexes(Query *root, RelOptInfo *rel);
extern bool pred_test(List *predicate_list, List *restrictinfo_list);
@ -108,8 +106,7 @@ extern Path *get_cheapest_path_for_pathkeys(List *paths, List *pathkeys,
extern Path *get_cheapest_fractional_path_for_pathkeys(List *paths,
List *pathkeys,
double fraction);
extern List *build_index_pathkeys(Query *root, RelOptInfo *rel,
IndexOptInfo *index,
extern List *build_index_pathkeys(Query *root, IndexOptInfo *index,
ScanDirection scandir);
extern List *build_subquery_pathkeys(Query *root, RelOptInfo *rel,
Query *subquery);