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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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14
src/backend/parser/parse_clause.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.103 2002/12/16 18:39:22 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.104 2003/02/08 20:20:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -301,8 +301,8 @@ transformJoinOnClause(ParseState *pstate, JoinExpr *j,
{
Node *result;
List *save_namespace;
List *clause_varnos,
*l;
Relids clause_varnos;
int varno;
/*
* This is a tad tricky, for two reasons. First, the namespace that
@ -333,17 +333,15 @@ transformJoinOnClause(ParseState *pstate, JoinExpr *j,
* here.)
*/
clause_varnos = pull_varnos(result);
foreach(l, clause_varnos)
while ((varno = bms_first_member(clause_varnos)) >= 0)
{
int varno = lfirsti(l);
if (!intMember(varno, containedRels))
{
elog(ERROR, "JOIN/ON clause refers to \"%s\", which is not part of JOIN",
rt_fetch(varno, pstate->p_rtable)->eref->aliasname);
}
}
freeList(clause_varnos);
bms_free(clause_varnos);
return result;
}
@ -490,7 +488,7 @@ transformRangeFunction(ParseState *pstate, RangeFunction *r)
* no local Var references in the transformed expression. (Outer
* references are OK, and are ignored here.)
*/
if (pull_varnos(funcexpr) != NIL)
if (!bms_is_empty(pull_varnos(funcexpr)))
elog(ERROR, "FROM function expression may not refer to other relations of same query level");
/*