diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 697b80d1b4..2d728991b6 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.300 2009/10/05 19:24:37 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.301 2009/10/06 00:55:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -493,7 +493,7 @@ DefineRelation(CreateStmt *stmt, char relkind)
 			cooked->contype = CONSTR_DEFAULT;
 			cooked->name = NULL;
 			cooked->attnum = attnum;
-			cooked->expr = stringToNode(colDef->cooked_default);
+			cooked->expr = colDef->cooked_default;
 			cooked->is_local = true;	/* not used for defaults */
 			cooked->inhcount = 0;		/* ditto */
 			cookedDefaults = lappend(cookedDefaults, cooked);
@@ -1168,8 +1168,8 @@ MergeAttributes(List *schema, List *supers, bool istemp,
 	List	   *constraints = NIL;
 	int			parentsWithOids = 0;
 	bool		have_bogus_defaults = false;
-	char	   *bogus_marker = "Bogus!";		/* marks conflicting defaults */
 	int			child_attno;
+	static Node	bogus_marker = { 0 };		/* marks conflicting defaults */
 
 	/*
 	 * Check for and reject tables with too many columns. We perform this
@@ -1353,7 +1353,7 @@ MergeAttributes(List *schema, List *supers, bool istemp,
 			 */
 			if (attribute->atthasdef)
 			{
-				char	   *this_default = NULL;
+				Node	   *this_default = NULL;
 				AttrDefault *attrdef;
 				int			i;
 
@@ -1364,7 +1364,7 @@ MergeAttributes(List *schema, List *supers, bool istemp,
 				{
 					if (attrdef[i].adnum == parent_attno)
 					{
-						this_default = attrdef[i].adbin;
+						this_default = stringToNode(attrdef[i].adbin);
 						break;
 					}
 				}
@@ -1382,10 +1382,10 @@ MergeAttributes(List *schema, List *supers, bool istemp,
 				 */
 				Assert(def->raw_default == NULL);
 				if (def->cooked_default == NULL)
-					def->cooked_default = pstrdup(this_default);
-				else if (strcmp(def->cooked_default, this_default) != 0)
+					def->cooked_default = this_default;
+				else if (!equal(def->cooked_default, this_default))
 				{
-					def->cooked_default = bogus_marker;
+					def->cooked_default = &bogus_marker;
 					have_bogus_defaults = true;
 				}
 			}
@@ -1524,7 +1524,7 @@ MergeAttributes(List *schema, List *supers, bool istemp,
 		{
 			ColumnDef  *def = lfirst(entry);
 
-			if (def->cooked_default == bogus_marker)
+			if (def->cooked_default == &bogus_marker)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_COLUMN_DEFINITION),
 				  errmsg("column \"%s\" inherits conflicting default values",
diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c
index 0264b2b339..7c3cb049b0 100644
--- a/src/backend/nodes/copyfuncs.c
+++ b/src/backend/nodes/copyfuncs.c
@@ -15,7 +15,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.439 2009/10/05 19:24:38 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.440 2009/10/06 00:55:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2054,7 +2054,7 @@ _copyColumnDef(ColumnDef *from)
 	COPY_SCALAR_FIELD(is_local);
 	COPY_SCALAR_FIELD(is_not_null);
 	COPY_NODE_FIELD(raw_default);
-	COPY_STRING_FIELD(cooked_default);
+	COPY_NODE_FIELD(cooked_default);
 	COPY_NODE_FIELD(constraints);
 
 	return newnode;
diff --git a/src/backend/nodes/equalfuncs.c b/src/backend/nodes/equalfuncs.c
index 5d3cbbda1e..bf978f871d 100644
--- a/src/backend/nodes/equalfuncs.c
+++ b/src/backend/nodes/equalfuncs.c
@@ -22,7 +22,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.362 2009/10/05 19:24:38 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.363 2009/10/06 00:55:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2072,7 +2072,7 @@ _equalColumnDef(ColumnDef *a, ColumnDef *b)
 	COMPARE_SCALAR_FIELD(is_local);
 	COMPARE_SCALAR_FIELD(is_not_null);
 	COMPARE_NODE_FIELD(raw_default);
-	COMPARE_STRING_FIELD(cooked_default);
+	COMPARE_NODE_FIELD(cooked_default);
 	COMPARE_NODE_FIELD(constraints);
 
 	return true;
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index 0a7aa250db..6751cb1a34 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.364 2009/09/17 20:49:28 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.365 2009/10/06 00:55:26 tgl Exp $
  *
  * NOTES
  *	  Every node type that can appear in stored rules' parsetrees *must*
@@ -1849,7 +1849,7 @@ _outColumnDef(StringInfo str, ColumnDef *node)
 	WRITE_BOOL_FIELD(is_local);
 	WRITE_BOOL_FIELD(is_not_null);
 	WRITE_NODE_FIELD(raw_default);
-	WRITE_STRING_FIELD(cooked_default);
+	WRITE_NODE_FIELD(cooked_default);
 	WRITE_NODE_FIELD(constraints);
 }
 
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 7a11eb96ed..f7a122c0d6 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -19,7 +19,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	$PostgreSQL: pgsql/src/backend/parser/parse_utilcmd.c,v 2.25 2009/07/30 02:45:37 tgl Exp $
+ *	$PostgreSQL: pgsql/src/backend/parser/parse_utilcmd.c,v 2.26 2009/10/06 00:55:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -644,7 +644,7 @@ transformInhRelation(ParseState *pstate, CreateStmtContext *cxt,
 		 */
 		if (attribute->atthasdef && including_defaults)
 		{
-			char	   *this_default = NULL;
+			Node	   *this_default = NULL;
 			AttrDefault *attrdef;
 			int			i;
 
@@ -655,7 +655,7 @@ transformInhRelation(ParseState *pstate, CreateStmtContext *cxt,
 			{
 				if (attrdef[i].adnum == parent_attno)
 				{
-					this_default = attrdef[i].adbin;
+					this_default = stringToNode(attrdef[i].adbin);
 					break;
 				}
 			}
@@ -666,7 +666,7 @@ transformInhRelation(ParseState *pstate, CreateStmtContext *cxt,
 			 * but it can't; so default is ready to apply to child.
 			 */
 
-			def->cooked_default = pstrdup(this_default);
+			def->cooked_default = this_default;
 		}
 	}
 
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 24066b9b38..b182dcfd53 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -13,7 +13,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.403 2009/10/05 19:24:48 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.404 2009/10/06 00:55:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -443,10 +443,9 @@ typedef struct RangeFunction
  *
  * If the column has a default value, we may have the value expression
  * in either "raw" form (an untransformed parse tree) or "cooked" form
- * (the nodeToString representation of an executable expression tree),
- * depending on how this ColumnDef node was created (by parsing, or by
- * inheritance from an existing relation).	We should never have both
- * in the same node!
+ * (a post-parse-analysis, executable expression tree), depending on
+ * how this ColumnDef node was created (by parsing, or by inheritance
+ * from an existing relation).  We should never have both in the same node!
  *
  * The constraints list may contain a CONSTR_DEFAULT item in a raw
  * parsetree produced by gram.y, but transformCreateStmt will remove
@@ -462,7 +461,7 @@ typedef struct ColumnDef
 	bool		is_local;		/* column has local (non-inherited) def'n */
 	bool		is_not_null;	/* NOT NULL constraint specified? */
 	Node	   *raw_default;	/* default value (untransformed parse tree) */
-	char	   *cooked_default; /* nodeToString representation */
+	Node	   *cooked_default; /* default value (transformed expr tree) */
 	List	   *constraints;	/* other constraints on column */
 } ColumnDef;
 
diff --git a/src/test/regress/expected/inherit.out b/src/test/regress/expected/inherit.out
index 1b98ce94f1..69078ae50a 100644
--- a/src/test/regress/expected/inherit.out
+++ b/src/test/regress/expected/inherit.out
@@ -571,6 +571,21 @@ order by 1,2;
  bar2    |  4 |   4
 (8 rows)
 
+/* Test multiple inheritance of column defaults */
+CREATE TABLE firstparent (tomorrow date default now()::date + 1);
+CREATE TABLE secondparent (tomorrow date default  now() :: date  +  1);
+CREATE TABLE jointchild () INHERITS (firstparent, secondparent);  -- ok
+NOTICE:  merging multiple inherited definitions of column "tomorrow"
+CREATE TABLE thirdparent (tomorrow date default now()::date - 1);
+CREATE TABLE otherchild () INHERITS (firstparent, thirdparent);  -- not ok
+NOTICE:  merging multiple inherited definitions of column "tomorrow"
+ERROR:  column "tomorrow" inherits conflicting default values
+HINT:  To resolve the conflict, specify a default explicitly.
+CREATE TABLE otherchild (tomorrow date default now())
+  INHERITS (firstparent, thirdparent);  -- ok, child resolves ambiguous default
+NOTICE:  merging multiple inherited definitions of column "tomorrow"
+NOTICE:  merging column "tomorrow" with inherited definition
+DROP TABLE firstparent, secondparent, jointchild, thirdparent, otherchild;
 /* Test inheritance of structure (LIKE) */
 CREATE TABLE inhx (xx text DEFAULT 'text');
 /*
diff --git a/src/test/regress/sql/inherit.sql b/src/test/regress/sql/inherit.sql
index 1730a48575..e68c658ec7 100644
--- a/src/test/regress/sql/inherit.sql
+++ b/src/test/regress/sql/inherit.sql
@@ -121,6 +121,17 @@ update bar set f2 = f2 + 100 where f1 in (select f1 from foo);
 SELECT relname, bar.* FROM bar, pg_class where bar.tableoid = pg_class.oid
 order by 1,2;
 
+/* Test multiple inheritance of column defaults */
+
+CREATE TABLE firstparent (tomorrow date default now()::date + 1);
+CREATE TABLE secondparent (tomorrow date default  now() :: date  +  1);
+CREATE TABLE jointchild () INHERITS (firstparent, secondparent);  -- ok
+CREATE TABLE thirdparent (tomorrow date default now()::date - 1);
+CREATE TABLE otherchild () INHERITS (firstparent, thirdparent);  -- not ok
+CREATE TABLE otherchild (tomorrow date default now())
+  INHERITS (firstparent, thirdparent);  -- ok, child resolves ambiguous default
+
+DROP TABLE firstparent, secondparent, jointchild, thirdparent, otherchild;
 
 /* Test inheritance of structure (LIKE) */
 CREATE TABLE inhx (xx text DEFAULT 'text');