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-rw-r--r--contrib/pgstattuple/pgstattuple.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/contrib/pgstattuple/pgstattuple.c b/contrib/pgstattuple/pgstattuple.c
index 31de26aa3f..bac41ceabc 100644
--- a/contrib/pgstattuple/pgstattuple.c
+++ b/contrib/pgstattuple/pgstattuple.c
@@ -1,5 +1,5 @@
/*
- * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.12.4.1 2004/10/13 22:22:00 tgl Exp $
+ * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.12.4.2 2009/03/31 22:56:28 tgl Exp $
*
* Copyright (c) 2001,2002 Tatsuo Ishii
*
@@ -118,6 +118,16 @@ pgstattuple_real(Relation rel)
Datum result;
/*
+ * Reject attempts to read non-local temporary relations; we would
+ * be likely to get wrong data since we have no visibility into the
+ * owning session's local buffers.
+ */
+ if (isOtherTempNamespace(RelationGetNamespace(rel)))
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("cannot access temporary tables of other sessions")));
+
+ /*
* Build a tuple description for a pgstattupe_type tuple
*/
tupdesc = RelationNameGetTupleDesc(DUMMY_TUPLE);