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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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26
src/backend/optimizer/path/joinpath.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.77 2003/01/27 20:51:51 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.78 2003/02/08 20:20:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -689,7 +689,7 @@ hash_inner_and_outer(Query *root,
{
RestrictInfo *restrictinfo = (RestrictInfo *) lfirst(i);
if (restrictinfo->left_relids == NIL ||
if (restrictinfo->left_relids == NULL ||
restrictinfo->hashjoinoperator == InvalidOid)
continue; /* not hashjoinable */
@ -703,13 +703,13 @@ hash_inner_and_outer(Query *root,
/*
* Check if clause is usable with these input rels.
*/
if (is_subseti(restrictinfo->left_relids, outerrel->relids) &&
is_subseti(restrictinfo->right_relids, innerrel->relids))
if (bms_is_subset(restrictinfo->left_relids, outerrel->relids) &&
bms_is_subset(restrictinfo->right_relids, innerrel->relids))
{
/* righthand side is inner */
}
else if (is_subseti(restrictinfo->left_relids, innerrel->relids) &&
is_subseti(restrictinfo->right_relids, outerrel->relids))
else if (bms_is_subset(restrictinfo->left_relids, innerrel->relids) &&
bms_is_subset(restrictinfo->right_relids, outerrel->relids))
{
/* lefthand side is inner */
}
@ -808,12 +808,12 @@ select_mergejoin_clauses(RelOptInfo *joinrel,
switch (jointype)
{
case JOIN_RIGHT:
if (restrictinfo->left_relids == NIL ||
if (restrictinfo->left_relids == NULL ||
restrictinfo->mergejoinoperator == InvalidOid)
return NIL; /* not mergejoinable */
break;
case JOIN_FULL:
if (restrictinfo->left_relids == NIL ||
if (restrictinfo->left_relids == NULL ||
restrictinfo->mergejoinoperator == InvalidOid)
elog(ERROR, "FULL JOIN is only supported with mergejoinable join conditions");
break;
@ -823,7 +823,7 @@ select_mergejoin_clauses(RelOptInfo *joinrel,
}
}
if (restrictinfo->left_relids == NIL ||
if (restrictinfo->left_relids == NULL ||
restrictinfo->mergejoinoperator == InvalidOid)
continue; /* not mergejoinable */
@ -832,13 +832,13 @@ select_mergejoin_clauses(RelOptInfo *joinrel,
* needed on each side of the clause must be available from one or
* the other of the input rels.
*/
if (is_subseti(restrictinfo->left_relids, outerrel->relids) &&
is_subseti(restrictinfo->right_relids, innerrel->relids))
if (bms_is_subset(restrictinfo->left_relids, outerrel->relids) &&
bms_is_subset(restrictinfo->right_relids, innerrel->relids))
{
/* righthand side is inner */
}
else if (is_subseti(restrictinfo->left_relids, innerrel->relids) &&
is_subseti(restrictinfo->right_relids, outerrel->relids))
else if (bms_is_subset(restrictinfo->left_relids, innerrel->relids) &&
bms_is_subset(restrictinfo->right_relids, outerrel->relids))
{
/* lefthand side is inner */
}