From b0595b76aaedf2f05605f07d3f35406b6d31e6c4 Mon Sep 17 00:00:00 2001
From: asfernandes <asfernandes@users.sourceforge.net>
Date: Thu, 5 Sep 2013 16:09:25 +0000
Subject: [PATCH] Improvement CORE-4206 - Add RESTART [WITH] clause for alter
 identity columns - documentation.

---
 .../README.identity_columns.txt               | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/doc/sql.extensions/README.identity_columns.txt b/doc/sql.extensions/README.identity_columns.txt
index 352ccd4434..66c2e1f9c3 100644
--- a/doc/sql.extensions/README.identity_columns.txt
+++ b/doc/sql.extensions/README.identity_columns.txt
@@ -13,6 +13,9 @@ Syntax:
     <column definition> ::=
         <name> <type> GENERATED BY DEFAULT AS IDENTITY [ (START WITH <value>) ] <constraints>
 
+    <alter column definition> ::=
+        <name> RESTART [ WITH <value> ]
+
 Syntax rules:
     - The type of an identity column must be an exact number type with zero scale. That includes:
     smallint, integer, bigint, numeric(x, 0) and decimal(x, 0).
@@ -42,10 +45,26 @@ insert into objects (name) values ('Table');
 insert into objects (name) values ('Book');
 insert into objects (id, name) values (10, 'Computer');
 
-select * from objects;
+select * from objects order by id;
+
+commit;
 
           ID NAME
 ============ ===============
            1 Table
            2 Book
           10 Computer
+
+alter table objects
+  alter id restart with 14;
+
+insert into objects (name) values ('Pencil');
+
+select * from objects order by id;
+
+          ID NAME
+============ ===============
+           1 Table
+           2 Book
+          10 Computer
+          15 Pencil