3 files changed, 32 insertions, 3 deletions
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h
index 3f87ca202ac..9c913797dd4 100644
--- a/src/include/nodes/nodes.h
+++ b/src/include/nodes/nodes.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: nodes.h,v 1.22 1998/01/10 04:30:08 momjian Exp $
+ * $Id: nodes.h,v 1.23 1998/01/17 04:53:38 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -60,6 +60,7 @@ typedef enum NodeTag
 	T_Const,
 	T_Param,
 	T_Aggreg,
+	T_SubLink,
 	T_Func,
 	T_Array,
 	T_ArrayRef,
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 02fa069df61..fc30cbf3e0a 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: parsenodes.h,v 1.45 1998/01/16 23:20:55 momjian Exp $
+ * $Id: parsenodes.h,v 1.46 1998/01/17 04:53:40 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -45,6 +45,7 @@ typedef struct Query
 	bool		isBinary;		/* binary portal? */
 	bool		unionall;		/* union without unique sort */
 	bool		hasAggs;		/* has aggregates in target list */
+	bool		hasSubLinks;	/* has subquery SubLink */
 	
 	char	   *uniqueFlag;		/* NULL, '*', or Unique attribute name */
 	List	   *sortClause;		/* a list of SortClause's */
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h
index 1e896e5e136..3da2c433cb7 100644
--- a/src/include/nodes/primnodes.h
+++ b/src/include/nodes/primnodes.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: primnodes.h,v 1.12 1998/01/04 04:31:37 momjian Exp $
+ * $Id: primnodes.h,v 1.13 1998/01/17 04:53:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -271,6 +271,33 @@ typedef struct Aggreg
 } Aggreg;
 
 /* ----------------
+ * SubLink
+ *		subLinkType		- EXISTS, ALL, ANY, EXPR
+ *		useor			- TRUE for <>
+ *		lefthand		- list of Var/Const nodes on the left
+ *		oper			- list of Oper nodes
+ *		subselect		- subselect as Query* or parsetree
+ * ----------------
+ */
+typedef enum SubLinkType
+{
+	EXISTS_SUBLINK, ALL_SUBLINK, ANY_SUBLINK, EXPR_SUBLINK,
+	IN_SUBLINK, NOTIN_SUBLINK, OPER_SUBLINK
+} SubLinkType;
+
+
+typedef struct SubLink
+{
+struct Query;
+	NodeTag		type;
+	SubLinkType	subLinkType;
+	bool		useor;
+	List		*lefthand;
+	List		*oper;
+	Node		*subselect;
+} SubLink;
+
+/* ----------------
  * Array
  *		arrayelemtype	- base type of the array's elements (homogenous!)
  *		arrayelemlength - length of that type