database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-09 06:21:09 +03:00
Code Activity

Massive commit to run PGINDENT on all *.c and *.h files.

Browse Source
This commit is contained in:
Bruce Momjian
1997-09-07 05:04:48 +00:00
parent 8fecd4febf
commit 1ccd423235
687 changed files with 150775 additions and 136888 deletions
Download Patch File Download Diff File Expand all files Collapse all files

132
src/backend/optimizer/util/joininfo.c
View File

@@ -1,13 +1,13 @@
/*-------------------------------------------------------------------------
*
* joininfo.c--
* JoinInfo node manipulation routines
* JoinInfo node manipulation routines
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/joininfo.c,v 1.2 1996/11/10 03:01:00 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/joininfo.c,v 1.3 1997/09/07 04:44:27 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -21,88 +21,96 @@
#include "optimizer/clauses.h"
/*
/*
* joininfo-member--
* Determines whether a node has already been created for a join
* between a set of join relations and the relation described by
* 'joininfo-list'.
*
* Determines whether a node has already been created for a join
* between a set of join relations and the relation described by
* 'joininfo-list'.
*
* 'join-relids' is a list of relids corresponding to the join relation
* 'joininfo-list' is the list of joininfo nodes against which this is
* checked
*
* 'joininfo-list' is the list of joininfo nodes against which this is
* checked
*
* Returns the corresponding node in 'joininfo-list' if such a node
* exists.
*
*
*/
JInfo *
joininfo_member(List *join_relids, List *joininfo_list)
JInfo *
joininfo_member(List * join_relids, List * joininfo_list)
{
List *i = NIL;
List *other_rels = NIL;
List *i = NIL;
List *other_rels = NIL;
foreach(i,joininfo_list) {
other_rels = lfirst(i);
if(same(join_relids, ((JInfo*)other_rels)->otherrels))
return((JInfo*)other_rels);
}
return((JInfo*)NULL);
foreach(i, joininfo_list)
{
other_rels = lfirst(i);
if (same(join_relids, ((JInfo *) other_rels)->otherrels))
return ((JInfo *) other_rels);
}
return ((JInfo *) NULL);
}
/*
/*
* find-joininfo-node--
* Find the joininfo node within a relation entry corresponding
* to a join between 'this_rel' and the relations in 'join-relids'. A
* new node is created and added to the relation entry's joininfo
* field if the desired one can't be found.
*
* Find the joininfo node within a relation entry corresponding
* to a join between 'this_rel' and the relations in 'join-relids'. A
* new node is created and added to the relation entry's joininfo
* field if the desired one can't be found.
*
* Returns a joininfo node.
*
*
*/
JInfo *
find_joininfo_node(Rel *this_rel, List *join_relids)
JInfo *
find_joininfo_node(Rel * this_rel, List * join_relids)
{
JInfo *joininfo = joininfo_member(join_relids,
this_rel->joininfo);
if( joininfo == NULL ) {
joininfo = makeNode(JInfo);
joininfo->otherrels = join_relids;
joininfo->jinfoclauseinfo = NIL;
joininfo->mergesortable = false;
joininfo->hashjoinable = false;
joininfo->inactive = false;
this_rel->joininfo = lcons(joininfo, this_rel->joininfo);
}
return(joininfo);
JInfo *joininfo = joininfo_member(join_relids,
this_rel->joininfo);
if (joininfo == NULL)
{
joininfo = makeNode(JInfo);
joininfo->otherrels = join_relids;
joininfo->jinfoclauseinfo = NIL;
joininfo->mergesortable = false;
joininfo->hashjoinable = false;
joininfo->inactive = false;
this_rel->joininfo = lcons(joininfo, this_rel->joininfo);
}
return (joininfo);
}
/*
/*
* other-join-clause-var--
* Determines whether a var node is contained within a joinclause
* of the form(op var var).
*
* Determines whether a var node is contained within a joinclause
* of the form(op var var).
*
* Returns the other var node in the joinclause if it is, nil if not.
*
*
*/
Var *
other_join_clause_var(Var *var, Expr *clause)
Var *
other_join_clause_var(Var * var, Expr * clause)
{
Var *retval;
Var *l, *r;
Var *retval;
Var *l,
*r;
retval = (Var*) NULL;
retval = (Var *) NULL;
if( var != NULL && join_clause_p((Node*)clause)) {
l = (Var *) get_leftop(clause);
r = (Var *) get_rightop(clause);
if (var != NULL && join_clause_p((Node *) clause))
{
l = (Var *) get_leftop(clause);
r = (Var *) get_rightop(clause);
if(var_equal(var, l)) {
retval = r;
} else if(var_equal(var, r)) {
retval = l;
}
}
if (var_equal(var, l))
{
retval = r;
}
else if (var_equal(var, r))
{
retval = l;
}
}
return(retval);
return (retval);
}