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Remove support for OR'd indexscans internal to a single IndexScan plan

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node, as this behavior is now better done as a bitmap OR indexscan.
This allows considerable simplification in nodeIndexscan.c itself as
well as several planner modules concerned with indexscan plan generation.
Also we can improve the sharing of code between regular and bitmap
indexscans, since they are now working with nigh-identical Plan nodes.
This commit is contained in:
Tom Lane
2005-04-25 01:30:14 +00:00
parent 186655e9a5
commit 5b05185262
21 changed files with 711 additions and 1924 deletions
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10
src/include/optimizer/paths.h
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@@ -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 1.82 2005/04/22 21:58:32 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.83 2005/04/25 01:30:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -36,13 +36,15 @@ extern void debug_print_rel(Query *root, RelOptInfo *rel);
* routines to generate index paths
*/
extern void create_index_paths(Query *root, RelOptInfo *rel);
extern List *generate_bitmap_or_paths(Query *root, RelOptInfo *rel,
List *clauses, List *outer_clauses,
bool isjoininner,
Relids outer_relids);
extern Path *best_inner_indexscan(Query *root, RelOptInfo *rel,
Relids outer_relids, JoinType jointype);
extern List *group_clauses_by_indexkey(IndexOptInfo *index,
List *clauses, List *outer_clauses,
Relids outer_relids);
extern List *group_clauses_by_indexkey_for_or(IndexOptInfo *index,
Expr *orsubclause);
extern bool match_index_to_operand(Node *operand, int indexcol,
IndexOptInfo *index);
extern List *expand_indexqual_conditions(IndexOptInfo *index,
@@ -50,14 +52,12 @@ extern List *expand_indexqual_conditions(IndexOptInfo *index,
extern void check_partial_indexes(Query *root, RelOptInfo *rel);
extern bool pred_test(List *predicate_list, List *restrictinfo_list);
extern List *flatten_clausegroups_list(List *clausegroups);
extern Expr *make_expr_from_indexclauses(List *indexclauses);
/*
* orindxpath.c
* additional routines for indexable OR clauses
*/
extern bool create_or_index_quals(Query *root, RelOptInfo *rel);
extern void create_or_index_paths(Query *root, RelOptInfo *rel);
/*
* tidpath.h

3
src/include/optimizer/planmain.h
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@@ -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/planmain.h,v 1.82 2005/04/12 05:11:28 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.83 2005/04/25 01:30:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -33,6 +33,7 @@ extern Plan *optimize_minmax_aggregates(Query *root, List *tlist,
* prototypes for plan/createplan.c
*/
extern Plan *create_plan(Query *root, Path *best_path);
extern List *create_bitmap_restriction(Path *bitmapqual);
extern SubqueryScan *make_subqueryscan(List *qptlist, List *qpqual,
Index scanrelid, Plan *subplan);
extern Append *make_append(List *appendplans, bool isTarget, List *tlist);

5
src/include/optimizer/restrictinfo.h
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@@ -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/restrictinfo.h,v 1.27 2005/04/22 21:58:32 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.28 2005/04/25 01:30:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -18,9 +18,6 @@
extern RestrictInfo *make_restrictinfo(Expr *clause, bool is_pushed_down,
bool valid_everywhere);
extern List *make_restrictinfo_from_indexclauses(List *indexclauses,
bool is_pushed_down,
bool valid_everywhere);
extern bool restriction_is_or_clause(RestrictInfo *restrictinfo);
extern List *get_actual_clauses(List *restrictinfo_list);
extern void get_actual_join_clauses(List *restrictinfo_list,