diff options
Diffstat (limited to 'src/backend/optimizer/util/restrictinfo.c')
| -rw-r--r-- | src/backend/optimizer/util/restrictinfo.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/src/backend/optimizer/util/restrictinfo.c b/src/backend/optimizer/util/restrictinfo.c index 3ce924de1bb..adbfd884c36 100644 --- a/src/backend/optimizer/util/restrictinfo.c +++ b/src/backend/optimizer/util/restrictinfo.c @@ -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); + } +} |