diff options
Diffstat (limited to 'src/backend/parser/parse_relation.c')
| -rw-r--r-- | src/backend/parser/parse_relation.c | 41 |
1 files changed, 15 insertions, 26 deletions
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c index 085cd5366bb..76c79de6c6d 100644 --- a/src/backend/parser/parse_relation.c +++ b/src/backend/parser/parse_relation.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.38 2000/03/17 02:36:17 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.39 2000/03/23 07:38:30 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -93,11 +93,7 @@ refnameRangeTableEntries(ParseState *pstate, char *refname) if (strcmp(rte->eref->relname, refname) == 0) rteList = lappend(rteList, rte); } - /* only allow correlated columns in WHERE clause */ - if (pstate->p_in_where_clause) - pstate = pstate->parentParseState; - else - break; + pstate = pstate->parentParseState; } return rteList; } @@ -117,16 +113,15 @@ refnameRangeTableEntry(ParseState *pstate, char *refname) if (strcmp(rte->eref->relname, refname) == 0) return rte; } - /* only allow correlated columns in WHERE clause */ - if (pstate->p_in_where_clause) - pstate = pstate->parentParseState; - else - break; + pstate = pstate->parentParseState; } return NULL; } -/* given refname, return id of variable; position starts with 1 */ +/* given refname, return RT index (starting with 1) of the relation, + * and optionally get its nesting depth (0 = current). If sublevels_up + * is NULL, only consider rels at the current nesting level. + */ int refnameRangeTablePosn(ParseState *pstate, char *refname, int *sublevels_up) { @@ -147,13 +142,9 @@ refnameRangeTablePosn(ParseState *pstate, char *refname, int *sublevels_up) return index; index++; } - /* only allow correlated columns in WHERE clause */ - if (pstate->p_in_where_clause) - { - pstate = pstate->parentParseState; - if (sublevels_up) - (*sublevels_up)++; - } + pstate = pstate->parentParseState; + if (sublevels_up) + (*sublevels_up)++; else break; } @@ -168,9 +159,8 @@ colnameRangeTableEntry(ParseState *pstate, char *colname) { List *et; List *rtable; - RangeTblEntry *rte_result; + RangeTblEntry *rte_result = NULL; - rte_result = NULL; while (pstate != NULL) { if (pstate->p_is_rule) @@ -226,11 +216,10 @@ colnameRangeTableEntry(ParseState *pstate, char *colname) rte_result = rte; } - /* only allow correlated columns in WHERE clause */ - if (pstate->p_in_where_clause && rte_result == NULL) - pstate = pstate->parentParseState; - else - break; + if (rte_result != NULL) + break; /* found */ + + pstate = pstate->parentParseState; } return rte_result; } |