Add LIMIT syntax for Jan.

Author: bmomjian

src/backend/nodes/copyfuncs.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.48 1998/09/01 04:29:00 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.49 1998/10/22 13:52:20 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1578,6 +1578,9 @@ _copyQuery(Query *from)
 		newnode->unionClause = temp_list;
 	}
 
+	Node_Copy(from, newnode, limitOffset);
+	Node_Copy(from, newnode, limitCount);
+
 	return newnode;
 }
 

src/backend/nodes/outfuncs.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.46 1998/09/01 04:29:07 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.47 1998/10/22 13:52:21 momjian Exp $
  *
  * NOTES
  *	  Every (plan) node in POSTGRES has an associated "out" routine which
@@ -259,6 +259,10 @@ _outQuery(StringInfo str, Query *node)
 	appendStringInfo(str, (node->hasSubLinks ? "true" : "false"));
 	appendStringInfo(str, " :unionClause ");
 	_outNode(str, node->unionClause);
+	appendStringInfo(str, " :limitOffset ");
+	_outNode(str, node->limitOffset);
+	appendStringInfo(str, " :limitCount ");
+	_outNode(str, node->limitCount);
 }
 
 static void

src/backend/nodes/readfuncs.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.37 1998/09/01 04:29:12 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.38 1998/10/22 13:52:22 momjian Exp $
  *
  * NOTES
  *	  Most of the read functions for plan nodes are tested. (In fact, they
@@ -163,6 +163,12 @@ _readQuery()
 	token = lsptok(NULL, &length);		/* skip :unionClause */
 	local_node->unionClause = nodeRead(true);
 
+	token = lsptok(NULL, &length);		/* skip :limitOffset */
+	local_node->limitOffset = nodeRead(true);
+
+	token = lsptok(NULL, &length);		/* skip :limitCount */
+	local_node->limitCount = nodeRead(true);
+
 	return local_node;
 }
 

src/include/nodes/parsenodes.h

@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: parsenodes.h,v 1.60 1998/10/02 16:23:07 momjian Exp $
+ * $Id: parsenodes.h,v 1.61 1998/10/22 13:52:24 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -60,6 +60,8 @@ typedef struct Query
 
 	List	   *unionClause;	/* unions are linked under the previous
 								 * query */
+	Node	   *limitOffset;	/* # of result tuples to skip */
+	Node	   *limitCount;		/* # of result tuples to return */
 
 	/* internal to planner */
 	List	   *base_rel_list;	/* base relation list */
@@ -639,6 +641,8 @@ typedef struct SelectStmt
 	char	   *portalname;		/* the portal (cursor) to create */
 	bool		binary;			/* a binary (internal) portal? */
 	bool		unionall;		/* union without unique sort */
+	Node	   *limitOffset;	/* # of result tuples to skip */
+	Node	   *limitCount;		/* # of result tuples to return */
 } SelectStmt;