New version attached. The following is implemented:

- CLUSTER ALL clusters all the tables that have some index with
  indisclustered set and the calling user owns.
- CLUSTER tablename clusters the named table, using the index with
  indisclustered set.  If no index has the bit set, throws elog(ERROR).
- The multi-relation version (CLUSTER ALL) uses a multitransaction
  approach, similar to what VACUUM does.

Alvaro Herrera

src/include/commands/cluster.h

@@ -6,16 +6,17 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994-5, Regents of the University of California
  *
- * $Id: cluster.h,v 1.15 2002/08/10 21:00:34 momjian Exp $
+ * $Id: cluster.h,v 1.16 2002/11/15 03:09:39 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
 #ifndef CLUSTER_H
 #define CLUSTER_H
 
+#include <nodes/parsenodes.h>
 /*
  * functions
  */
-extern void cluster(RangeVar *oldrelation, char *oldindexname);
+extern void cluster(ClusterStmt *stmt);
 
 #endif   /* CLUSTER_H */