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Replace planner's representation of relation sets, per pghackers discussion.

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Instead of Lists of integers, we now store variable-length bitmap sets.
This should be faster as well as less error-prone.
This commit is contained in:
Tom Lane
2003-02-08 20:20:55 +00:00
parent 893678eda7
commit c15a4c2aef
35 changed files with 1453 additions and 626 deletions
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15
src/include/nodes/pg_list.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_list.h,v 1.33 2003/01/27 20:51:54 tgl Exp $
* $Id: pg_list.h,v 1.34 2003/02/08 20:20:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -114,7 +114,6 @@ typedef struct List
*/
extern int length(List *list);
extern void *llast(List *list);
extern int llasti(List *list);
extern List *nconc(List *list1, List *list2);
extern List *lcons(void *datum, List *list);
extern List *lconsi(int datum, List *list);
@@ -136,20 +135,16 @@ extern void *nth(int n, List *l);
extern int nthi(int n, List *l);
extern void set_nth(List *l, int n, void *elem);
extern List *set_difference(List *list1, List *list2);
extern List *set_differencei(List *list1, List *list2);
extern List *set_ptrDifference(List *list1, List *list2);
extern List *lreverse(List *l);
extern List *set_union(List *list1, List *list2);
extern List *set_unioni(List *list1, List *list2);
extern List *set_ptrUnion(List *list1, List *list2);
extern List *set_intersect(List *l1, List *l2);
extern List *set_intersecti(List *list1, List *list2);
extern List *set_difference(List *list1, List *list2);
extern List *set_differencei(List *list1, List *list2);
extern List *set_ptrDifference(List *list1, List *list2);
extern bool equali(List *list1, List *list2);
extern bool sameseti(List *list1, List *list2);
extern bool overlap_setsi(List *list1, List *list2);
#define nonoverlap_setsi(list1, list2) (!overlap_setsi(list1, list2))
extern bool is_subseti(List *list1, List *list2);
extern void freeList(List *list);