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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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16
src/backend/nodes/copyfuncs.c
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@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.239 2003/02/03 21:15:43 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.240 2003/02/08 20:20:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -47,6 +47,10 @@
#define COPY_INTLIST_FIELD(fldname) \
(newnode->fldname = listCopy(from->fldname))
/* Copy a field that is a pointer to a Bitmapset */
#define COPY_BITMAPSET_FIELD(fldname) \
(newnode->fldname = bms_copy(from->fldname))
/* Copy a field that is a pointer to a C string, or perhaps NULL */
#define COPY_STRING_FIELD(fldname) \
(newnode->fldname = from->fldname ? pstrdup(from->fldname) : (char *) NULL)
@ -1058,8 +1062,8 @@ _copyRestrictInfo(RestrictInfo *from)
COPY_NODE_FIELD(subclauseindices); /* XXX probably bad */
COPY_SCALAR_FIELD(eval_cost);
COPY_SCALAR_FIELD(this_selec);
COPY_INTLIST_FIELD(left_relids);
COPY_INTLIST_FIELD(right_relids);
COPY_BITMAPSET_FIELD(left_relids);
COPY_BITMAPSET_FIELD(right_relids);
COPY_SCALAR_FIELD(mergejoinoperator);
COPY_SCALAR_FIELD(left_sortop);
COPY_SCALAR_FIELD(right_sortop);
@ -1088,7 +1092,7 @@ _copyJoinInfo(JoinInfo *from)
{
JoinInfo *newnode = makeNode(JoinInfo);
COPY_INTLIST_FIELD(unjoined_relids);
COPY_BITMAPSET_FIELD(unjoined_relids);
COPY_NODE_FIELD(jinfo_restrictinfo);
return newnode;
@ -1102,8 +1106,8 @@ _copyInClauseInfo(InClauseInfo *from)
{
InClauseInfo *newnode = makeNode(InClauseInfo);
COPY_INTLIST_FIELD(lefthand);
COPY_INTLIST_FIELD(righthand);
COPY_BITMAPSET_FIELD(lefthand);
COPY_BITMAPSET_FIELD(righthand);
COPY_NODE_FIELD(sub_targetlist);
return newnode;