Documentation.

h2/src/docsrc/help/help.csv

@@ -944,6 +944,7 @@ SAVEPOINT HALF_DONE
 SET @variableName [ = ] expression
 ","
 Updates a user-defined variable.
+Variables are not persisted and session scoped, that means only visible from within the session in which they are defined.
 This command does not commit a transaction, and rollback does not affect it.
 ","
 SET @TOTAL=0

h2/src/docsrc/html/changelog.html

@@ -18,7 +18,12 @@ Change Log
 <h1>Change Log</h1>
 
 <h2>Next Version (unreleased)</h2>
-<ul><li>Improved Oracle compatibility for NVL2. Thanks again to litailang for the patch.
+<ul><li>BLOB: InputStream.skip is now more efficient in embedded mode.
+</li><li>The default expression of a column may no longer reference the table,
+    because a database with such a table couldn't be opened normally.
+</li><li>Referenced objects in check constraints could be dropped, which resulted
+    in a database that can't be opened normally.
+</li><li>Improved Oracle compatibility for NVL2. Thanks again to litailang for the patch.
 </li><li>CSVREAD now supports the option 'preserveWhitespace'.
 </li><li>Recursive queries with many rows could throw an IndexOutOfBoundsException.
 </li><li>The auto-server mode can't be combined with an in-memory database.

h2/src/docsrc/html/roadmap.html

@@ -433,6 +433,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
 </li><li>Maybe use PhantomReference instead of finalize.
 </li><li>Database file name suffix: should only have one dot by default. Example: .h2db
 </li><li>Issue 196: Function based indexes
+</li><li>ALTER TABLE ... ADD COLUMN IF NOT EXISTS columnName.
 </li><li>Fix the disk space leak (killing the process at the exact right moment will increase
     the disk space usage; this space is not re-used). See TestDiskSpaceLeak.java
 </li><li>ROWNUM: Oracle compatibility when used within a subquery. Issue 198.
@@ -541,6 +542,8 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
 </li><li>PostgreSQL compatibility: support PgAdmin III (specially the function current_setting).
 </li><li>MySQL compatibility: support TIMESTAMPADD.
 </li><li>Support SELECT ... FOR UPDATE with joins (supported by PostgreSQL, MySQL, and HSQLDB; but not Derby).
+</li><li>TRANSACTION_ID() for in-memory databases.
+</li><li>TRANSACTION_ID() should be long (same as HSQLDB and PostgreSQL).
 </li></ul>
 
 <h2>Not Planned</h2>

h2/src/docsrc/html/tutorial.html

@@ -621,6 +621,12 @@ Another (more dangerous) solution is to set <code>useDatabaseLock</code> to fals
 The project <a href="http://kenai.com/projects/nbh2">H2 Database Engine Support For NetBeans</a>
 allows you to start and stop the H2 server from within the IDE.
 </p>
+<p>
+There is a known issue when using the Netbeans SQL Execution Window:
+before executing a query, another query in the form <code>SELECT COUNT(*) FROM &lt;query&gt;</code> is run.
+This is a problem for queries that modify state, such as <code>SELECT SEQ.NEXTVAL</code>.
+In this case, two sequence values are allocated instead of just one.
+</p>
 
 <h2 id="web_applications">Using Databases in Web Applications</h2>
 <p>
@@ -1249,6 +1255,7 @@ Variables that are not set evaluate to <code>NULL</code>.
 The data type of a user-defined variable is the data type
 of the value assigned to it, that means it is not necessary (or possible) to declare variable names before using them.
 There are no restrictions on the assigned values; large objects (LOBs) are supported as well.
+Rolling back a transaction does not affect the value of a user-defined variable.
 </p>
 
 <h2 id="date_time">Date and Time</h2>