Implement the <> operator for the tid type. Original patch from Mark

Kirkwood, minor improvements by Neil Conway. The regression tests have
been updated and the catversion has been bumped.

Author: Neil Conway

src/backend/utils/adt/tid.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/tid.c,v 1.49 2005/05/27 00:57:49 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/tid.c,v 1.50 2006/02/26 18:36:21 neilc Exp $
  *
  * NOTES
  *	  input routine largely stolen from boxin().
@@ -174,7 +174,6 @@ tideq(PG_FUNCTION_ARGS)
 				   arg1->ip_posid == arg2->ip_posid);
 }
 
-#ifdef NOT_USED
 Datum
 tidne(PG_FUNCTION_ARGS)
 {
@@ -185,7 +184,6 @@ tidne(PG_FUNCTION_ARGS)
 				   BlockIdGetBlockNumber(&(arg2->ip_blkid)) ||
 				   arg1->ip_posid != arg2->ip_posid);
 }
-#endif
 
 /*
  *	Functions to get latest tid of a specified tuple.

src/include/catalog/catversion.h

@@ -37,7 +37,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.315 2006/02/12 03:22:19 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.316 2006/02/26 18:36:21 neilc Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	200602112
+#define CATALOG_VERSION_NO	200602251
 
 #endif

src/include/catalog/pg_operator.h

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_operator.h,v 1.139 2006/02/11 03:32:39 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_operator.h,v 1.140 2006/02/26 18:36:21 neilc Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -130,6 +130,7 @@ DATA(insert OID = 385 (  "="	   PGNSP PGUID b t	29	29	16 385	 0	 0	 0	 0	 0 cide
 DATA(insert OID = 386 (  "="	   PGNSP PGUID b t	22	22	16 386	 0	 0	 0	 0	 0 int2vectoreq eqsel eqjoinsel ));
 DATA(insert OID = 387 (  "="	   PGNSP PGUID b f	27	27	16 387	 0	 0	 0	 0	 0 tideq eqsel eqjoinsel ));
 #define TIDEqualOperator   387
+DATA(insert OID = 402 (  "<>"	   PGNSP PGUID b f	27	27	16 402	 0	 0	 0	 0	 0 tidne neqsel neqjoinsel ));
 
 DATA(insert OID = 410 ( "="		   PGNSP PGUID b t	20	20	16 410 411 412 412 412 413 int8eq eqsel eqjoinsel ));
 DATA(insert OID = 411 ( "<>"	   PGNSP PGUID b f	20	20	16 411 410 0 0 0 0 int8ne neqsel neqjoinsel ));

src/include/catalog/pg_proc.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.397 2006/02/12 03:22:19 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.398 2006/02/26 18:36:21 neilc Exp $
  *
  * NOTES
  *	  The script catalog/genbki.sh reads this file and generates .bki
@@ -1598,6 +1598,8 @@ DATA(insert OID = 1293 ( currtid		   PGNSP PGUID 12 f f t f v 2 27 "26 27" _null
 DESCR("latest tid of a tuple");
 DATA(insert OID = 1294 ( currtid2		   PGNSP PGUID 12 f f t f v 2 27 "25 27" _null_ _null_ _null_ currtid_byrelname - _null_ ));
 DESCR("latest tid of a tuple");
+DATA(insert OID = 2398 ( tidne			   PGNSP PGUID 12 f f t f i 2 16 "27 27" _null_ _null_ _null_ tidne - _null_ ));
+DESCR("not equal");
 
 DATA(insert OID = 2168 ( pg_database_size		PGNSP PGUID 12 f f t f v 1 20 "19" _null_ _null_ _null_ pg_database_size_name - _null_ ));
 DESCR("Calculate total disk space usage for the specified database");

src/include/utils/builtins.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.273 2006/02/11 03:32:41 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.274 2006/02/26 18:36:22 neilc Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -531,6 +531,7 @@ extern Datum tidout(PG_FUNCTION_ARGS);
 extern Datum tidrecv(PG_FUNCTION_ARGS);
 extern Datum tidsend(PG_FUNCTION_ARGS);
 extern Datum tideq(PG_FUNCTION_ARGS);
+extern Datum tidne(PG_FUNCTION_ARGS);
 extern Datum currtid_byreloid(PG_FUNCTION_ARGS);
 extern Datum currtid_byrelname(PG_FUNCTION_ARGS);
 

src/test/regress/expected/transactions.out

@@ -517,3 +517,28 @@ fetch from foo;
 (1 row)
 
 abort;
+-- tests for the "tid" type
+SELECT '(3, 3)'::tid = '(3, 4)'::tid;
+ ?column? 
+----------
+ f
+(1 row)
+
+SELECT '(3, 3)'::tid = '(3, 3)'::tid;
+ ?column? 
+----------
+ t
+(1 row)
+
+SELECT '(3, 3)'::tid <> '(3, 3)'::tid;
+ ?column? 
+----------
+ f
+(1 row)
+
+SELECT '(3, 3)'::tid <> '(3, 4)'::tid;
+ ?column? 
+----------
+ t
+(1 row)
+

src/test/regress/sql/transactions.sql

@@ -325,3 +325,9 @@ rollback to x;
 fetch from foo;
 
 abort;
+
+-- tests for the "tid" type
+SELECT '(3, 3)'::tid = '(3, 4)'::tid;
+SELECT '(3, 3)'::tid = '(3, 3)'::tid;
+SELECT '(3, 3)'::tid <> '(3, 3)'::tid;
+SELECT '(3, 3)'::tid <> '(3, 4)'::tid;