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Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README.

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This commit is contained in:
Bruce Momjian
1999-02-03 20:15:53 +00:00
parent f3a6b38e32
commit 8d9237d485
35 changed files with 450 additions and 455 deletions
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18
src/backend/optimizer/path/mergeutils.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/mergeutils.c,v 1.9 1998/09/01 04:29:40 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/mergeutils.c,v 1.10 1999/02/03 20:15:33 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -23,27 +23,27 @@
/*
* group-clauses-by-order--
* If a join clause node in 'clauseinfo-list' is mergejoinable, store
* If a join clause node in 'restrictinfo-list' is mergejoinable, store
* it within a mergeinfo node containing other clause nodes with the same
* mergejoin ordering.
*
* 'clauseinfo-list' is the list of clauseinfo nodes
* 'restrictinfo-list' is the list of restrictinfo nodes
* 'inner-relid' is the relid of the inner join relation
*
* Returns the new list of mergeinfo nodes.
*
*/
List *
group_clauses_by_order(List *clauseinfo_list,
group_clauses_by_order(List *restrictinfo_list,
int inner_relid)
{
List *mergeinfo_list = NIL;
List *xclauseinfo = NIL;
List *xrestrictinfo = NIL;
foreach(xclauseinfo, clauseinfo_list)
foreach(xrestrictinfo, restrictinfo_list)
{
ClauseInfo *clauseinfo = (ClauseInfo *) lfirst(xclauseinfo);
MergeOrder *merge_ordering = clauseinfo->mergejoinorder;
RestrictInfo *restrictinfo = (RestrictInfo *) lfirst(xrestrictinfo);
MergeOrder *merge_ordering = restrictinfo->mergejoinorder;
if (merge_ordering)
{
@ -54,7 +54,7 @@ group_clauses_by_order(List *clauseinfo_list,
*/
PathOrder p_ordering;
MInfo *xmergeinfo;
Expr *clause = clauseinfo->clause;
Expr *clause = restrictinfo->clause;
Var *leftop = get_leftop(clause);
Var *rightop = get_rightop(clause);
JoinKey *keys;