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First cut at full support for OUTER JOINs. There are still a few loose

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ends to clean up (see my message of same date to pghackers), but mostly
it works.  INITDB REQUIRED!
This commit is contained in:
Tom Lane
2000-09-12 21:07:18 +00:00
parent b5c0ab278b
commit ed5003c584
93 changed files with 6386 additions and 4262 deletions
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28
src/backend/optimizer/util/restrictinfo.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/restrictinfo.c,v 1.10 2000/05/30 00:49:49 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/restrictinfo.c,v 1.11 2000/09/12 21:06:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -54,3 +54,29 @@ get_actual_clauses(List *restrictinfo_list)
}
return result;
}
/*
* get_actual_join_clauses
*
* Extract clauses from 'restrictinfo_list', separating those that
* came from JOIN/ON conditions from those that didn't.
*/
void
get_actual_join_clauses(List *restrictinfo_list,
List **joinquals, List **otherquals)
{
List *temp;
*joinquals = NIL;
*otherquals = NIL;
foreach(temp, restrictinfo_list)
{
RestrictInfo *clause = (RestrictInfo *) lfirst(temp);
if (clause->isjoinqual)
*joinquals = lappend(*joinquals, clause->clause);
else
*otherquals = lappend(*otherquals, clause->clause);
}
}