*** pgsql/contrib/pgstattuple/pgstattuple.c	2008/06/19 00:46:03	1.36
--- pgsql/contrib/pgstattuple/pgstattuple.c	2009/03/31 22:54:31	1.37
***************
*** 1,5 ****
  /*
!  * $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.35 2008/05/16 17:31:17 tgl Exp $
   *
   * Copyright (c) 2001,2002	Tatsuo Ishii
   *
--- 1,5 ----
  /*
!  * $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.36 2008/06/19 00:46:03 alvherre Exp $
   *
   * Copyright (c) 2001,2002	Tatsuo Ishii
   *
*************** pgstat_relation(Relation rel, FunctionCa
*** 199,204 ****
--- 199,214 ----
  {
  	const char *err;
  
+ 	/*
+ 	 * 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 (RELATION_IS_OTHER_TEMP(rel))
+ 		ereport(ERROR,
+ 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ 				 errmsg("cannot access temporary tables of other sessions")));
+ 
  	switch (rel->rd_rel->relkind)
  	{
  		case RELKIND_RELATION: