*** pgsql/src/include/parser/parse_node.h	2009/06/11 14:49:11	1.62
--- pgsql/src/include/parser/parse_node.h	2009/09/09 03:32:52	1.63
***************
*** 7,13 ****
   * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
!  * $PostgreSQL: pgsql/src/include/parser/parse_node.h,v 1.61 2009/01/22 20:16:09 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 7,13 ----
   * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
!  * $PostgreSQL: pgsql/src/include/parser/parse_node.h,v 1.62 2009/06/11 14:49:11 momjian Exp $
   *
   *-------------------------------------------------------------------------
   */
***************
*** 61,66 ****
--- 61,69 ----
   * p_future_ctes: list of CommonTableExprs (WITH items) that are not yet
   * visible due to scope rules.	This is used to help improve error messages.
   *
+  * p_parent_cte: CommonTableExpr that immediately contains the current query,
+  * if any.
+  *
   * p_windowdefs: list of WindowDefs representing WINDOW and OVER clauses.
   * We collect these while transforming expressions and then transform them
   * afterwards (so that any resjunk tlist items needed for the sort/group
*************** typedef struct ParseState
*** 88,93 ****
--- 91,97 ----
  	List	   *p_varnamespace; /* current namespace for columns */
  	List	   *p_ctenamespace; /* current namespace for common table exprs */
  	List	   *p_future_ctes;	/* common table exprs not yet in namespace */
+ 	CommonTableExpr *p_parent_cte;		/* this query's containing CTE */
  	List	   *p_windowdefs;	/* raw representations of window clauses */
  	Oid		   *p_paramtypes;	/* OIDs of types for $n parameter symbols */
  	int			p_numparams;	/* allocated size of p_paramtypes[] */