database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-15 03:41:20 +03:00
Code Activity

Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README.

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/optimizer/path/hashutils.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/hashutils.c,v 1.7 1998/09/01 04:29:32 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/hashutils.c,v 1.8 1999/02/03 20:15:32 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -24,29 +24,29 @@ static HInfo *match_hashop_hashinfo(Oid hashop, List *hashinfo_list);
/*
* group-clauses-by-hashop--
* If a join clause node in 'clauseinfo-list' is hashjoinable, store
* If a join clause node in 'restrictinfo-list' is hashjoinable, store
* it within a hashinfo node containing other clause nodes with the same
* hash operator.
*
* '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 hashinfo nodes.
*
*/
List *
group_clauses_by_hashop(List *clauseinfo_list,
group_clauses_by_hashop(List *restrictinfo_list,
int inner_relid)
{
List *hashinfo_list = NIL;
ClauseInfo *clauseinfo = (ClauseInfo *) NULL;
RestrictInfo *restrictinfo = (RestrictInfo *) NULL;
List *i = NIL;
Oid hashjoinop = 0;
foreach(i, clauseinfo_list)
foreach(i, restrictinfo_list)
{
clauseinfo = (ClauseInfo *) lfirst(i);
hashjoinop = clauseinfo->hashjoinoperator;
restrictinfo = (RestrictInfo *) lfirst(i);
hashjoinop = restrictinfo->hashjoinoperator;
/*
* Create a new hashinfo node and add it to 'hashinfo-list' if one
@@ -55,7 +55,7 @@ group_clauses_by_hashop(List *clauseinfo_list,
if (hashjoinop)
{
HInfo *xhashinfo = (HInfo *) NULL;
Expr *clause = clauseinfo->clause;
Expr *clause = restrictinfo->clause;
Var *leftop = get_leftop(clause);
Var *rightop = get_rightop(clause);
JoinKey *keys = (JoinKey *) NULL;