Add TRUNCATE command, with psql help and sgml additions.

6 files changed, 21 insertions, 6 deletions

diff --git a/src/include/catalog/heap.h b/src/include/catalog/heap.h
index b8e89d8c39..c8c130da96 100644
--- a/src/include/catalog/heap.h
+++ b/src/include/catalog/heap.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: heap.h,v 1.20 1999/07/15 23:03:41 momjian Exp $
+ * $Id: heap.h,v 1.21 1999/09/23 17:03:10 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -23,6 +23,7 @@ extern Oid heap_create_with_catalog(char *relname,
 						 TupleDesc tupdesc, char relkind, bool istemp);
 
 extern void heap_destroy_with_catalog(char *relname);
+extern void heap_truncate(char *relname);
 extern void heap_destroy(Relation rel);
 
 extern void InitNoNameRelList(void);
diff --git a/src/include/commands/creatinh.h b/src/include/commands/creatinh.h
index 60b5ae0d04..ffb111937a 100644
--- a/src/include/commands/creatinh.h
+++ b/src/include/commands/creatinh.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: creatinh.h,v 1.9 1999/02/13 23:21:18 momjian Exp $
+ * $Id: creatinh.h,v 1.10 1999/09/23 17:03:16 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -17,5 +17,6 @@
 
 extern void DefineRelation(CreateStmt *stmt, char relkind);
 extern void RemoveRelation(char *name);
+extern void TruncateRelation(char *name);
 
 #endif	 /* CREATINH_H */
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h
index 37f47c5306..da8a06af42 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 1.51 1999/08/16 02:17:39 tgl Exp $
+ * $Id: nodes.h,v 1.52 1999/09/23 17:03:21 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -151,6 +151,7 @@ typedef enum NodeTag
 	T_VersionStmt,
 	T_DefineStmt,
 	T_DestroyStmt,
+	T_TruncateStmt,
 	T_ExtendStmt,
 	T_FetchStmt,
 	T_IndexStmt,
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 5a1d07ec39..66c5a9132a 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 1.78 1999/08/21 03:49:09 tgl Exp $
+ * $Id: parsenodes.h,v 1.79 1999/09/23 17:03:22 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -283,6 +283,16 @@ typedef struct DestroyStmt
 } DestroyStmt;
 
 /* ----------------------
+ *              Truncate Table Statement
+ * ----------------------
+ */
+typedef struct TruncateStmt
+{
+        NodeTag         type;
+        char	   *relName;            /* relation to be truncated */
+} TruncateStmt;
+      
+/* ----------------------
  *		Extend Index Statement
  * ----------------------
  */
diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h
index 195401e23f..b55230e136 100644
--- a/src/include/storage/bufmgr.h
+++ b/src/include/storage/bufmgr.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: bufmgr.h,v 1.29 1999/07/17 20:18:33 momjian Exp $
+ * $Id: bufmgr.h,v 1.30 1999/09/23 17:03:27 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -161,6 +161,7 @@ extern void BufferRefCountReset(int *refcountsave);
 extern void BufferRefCountRestore(int *refcountsave);
 extern int	SetBufferWriteMode(int mode);
 extern void SetBufferCommitInfoNeedsSave(Buffer buffer);
+extern int BlowawayRelationBuffers(Relation rel, BlockNumber block);
 
 extern void UnlockBuffers(void);
 extern void LockBuffer(Buffer buffer, int mode);
diff --git a/src/include/utils/portal.h b/src/include/utils/portal.h
index c299f9a6d5..62d0880460 100644
--- a/src/include/utils/portal.h
+++ b/src/include/utils/portal.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: portal.h,v 1.18 1999/09/09 16:25:23 tgl Exp $
+ * $Id: portal.h,v 1.19 1999/09/23 17:03:33 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -60,6 +60,7 @@ struct PortalD
  * Special portals (well, their names anyway)
  */
 #define VACPNAME		"<vacuum>"
+#define TRUNCPNAME              "<truncate>"
 
 extern bool PortalNameIsSpecial(char *pname);
 extern void AtEOXact_portals(void);