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-rw-r--r--src/backend/parser/parse_relation.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index 59be1044748..f5324cb3735 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 1.53 2001/03/22 03:59:41 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.54 2001/04/18 17:04:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -909,6 +909,9 @@ expandNamesVars(ParseState *pstate, List *names, List *vars)
* In particular, it will work on an RTE for a subselect, whereas
* get_attname() only works on real relations.
*
+ * "*" is returned if the given attnum is InvalidAttrNumber --- this case
+ * occurs when a Var represents a whole tuple of a relation.
+ *
* XXX Actually, this is completely bogus, because refnames of RTEs are
* not guaranteed unique, and may not even have scope across the whole
* query. Cleanest fix would be to add refname/attname to Var nodes and
@@ -920,6 +923,9 @@ get_rte_attribute_name(RangeTblEntry *rte, AttrNumber attnum)
{
char *attname;
+ if (attnum == InvalidAttrNumber)
+ return "*";
+
/*
* If there is an alias, use it
*/