Restructure operator classes to allow improved handling of cross-data-type

cases.  Operator classes now exist within "operator families".  While most
families are equivalent to a single class, related classes can be grouped
into one family to represent the fact that they are semantically compatible.
Cross-type operators are now naturally adjunct parts of a family, without
having to wedge them into a particular opclass as we had done originally.

This commit restructures the catalogs and cleans up enough of the fallout so
that everything still works at least as well as before, but most of the work
needed to actually improve the planner's behavior will come later.  Also,
there are not yet CREATE/DROP/ALTER OPERATOR FAMILY commands; the only way
to create a new family right now is to allow CREATE OPERATOR CLASS to make
one by default.  I owe some more documentation work, too.  But that can all
be done in smaller pieces once this infrastructure is in place.

1 files changed, 17 insertions, 16 deletions

diff --git a/src/include/utils/syscache.h b/src/include/utils/syscache.h
index 5c84c7e17ca..2305ccd1d03 100644
--- a/src/include/utils/syscache.h
+++ b/src/include/utils/syscache.h
@@ -9,7 +9,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/syscache.h,v 1.65 2006/07/13 18:01:02 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/syscache.h,v 1.66 2006/12/23 00:43:13 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -48,21 +48,22 @@
 #define CONOID			17
 #define DATABASEOID		18
 #define INDEXRELID		19
-#define INHRELID		20
-#define LANGNAME		21
-#define LANGOID			22
-#define NAMESPACENAME	23
-#define NAMESPACEOID	24
-#define OPERNAMENSP		25
-#define OPEROID			26
-#define PROCNAMEARGSNSP 27
-#define PROCOID			28
-#define RELNAMENSP		29
-#define RELOID			30
-#define RULERELNAME		31
-#define STATRELATT		32
-#define TYPENAMENSP		33
-#define TYPEOID			34
+#define LANGNAME		20
+#define LANGOID			21
+#define NAMESPACENAME	22
+#define NAMESPACEOID	23
+#define OPERNAMENSP		24
+#define OPEROID			25
+#define OPFAMILYAMNAMENSP 26
+#define OPFAMILYOID		27
+#define PROCNAMEARGSNSP 28
+#define PROCOID			29
+#define RELNAMENSP		30
+#define RELOID			31
+#define RULERELNAME		32
+#define STATRELATT		33
+#define TYPENAMENSP		34
+#define TYPEOID			35
 
 extern void InitCatalogCache(void);
 extern void InitCatalogCachePhase2(void);