<li>Work on row level locking has been started (but there is nothing usable yet).
<li>Work on row level locking has been started (but there is nothing usable yet).
</li><li>JaQu (Java Query), a tool similar to LINQ (Language Integrated Query; from Microsoft)
</li><li>JaQu (Java Query), a tool similar to LINQ (Language Integrated Query; from Microsoft)
...
@@ -29,7 +33,7 @@ Change Log
...
@@ -29,7 +33,7 @@ Change Log
This was possible before but caused data loss.
This was possible before but caused data loss.
</li><li>When using computed columns or default values with a different data type than the column data type,
</li><li>When using computed columns or default values with a different data type than the column data type,
a class cast exception could occur. Fixed.
a class cast exception could occur. Fixed.
</li><li>Databases larger than 1 GB was sometimes very slow if a lot of data was deleted previously. Fixed.
</li><li>Opening databases larger than 1 GB was sometimes very slow if a lot of data was deleted previously. Fixed.
</li><li>RUNSCRIPT could throw a NullPointerException if the script name was an expression.
</li><li>RUNSCRIPT could throw a NullPointerException if the script name was an expression.
</li><li>Improved compatibility. New compatibility modes for Oracle and Derby.
</li><li>Improved compatibility. New compatibility modes for Oracle and Derby.
New compatibility flag uniqueIndexNullDistinct to only allow one row with 'NULL' in a unique
New compatibility flag uniqueIndexNullDistinct to only allow one row with 'NULL' in a unique
...
@@ -489,34 +493,4 @@ Change Log
...
@@ -489,34 +493,4 @@ Change Log
</li><li>Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
</li><li>Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
</li></ul>
</li></ul>
<h2>Version 1.0.57 (2007-08-25)</h2>
<ul>
<li>New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:~/test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
</li><li>The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
</li><li>The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time.
</li><li>Opening large read-only databases was very slow. Fixed.
</li><li>New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot!
</li><li>Disabling / enabling referential integrity for a table can now be used inside a transaction.
</li><li>Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
</li><li>Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
</li><li>When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
</li><li>When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
</li><li>Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
</li><li>Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
</li><li>Can now incrementally translate the documentation. See also FAQ.
</li><li>Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
</li><li>The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables.
</li><li>Google translate did not work for the H2 homepage. It should be fixed now.
</li><li>The CONVERT function did not work with views when using UNION.
</li><li>The build now issues a warning if the source code is switched to the wrong version.
</li><li>The default lock mode is now read committed instead of serialized.
</li><li>PG server: data was truncated when reading large VARCHAR columns and decimal columns.
</li><li>PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
</li><li>Some file operations didn't work for files in the root directory. Fixed.
</li><li>In the Restore tool, the parameter -file did not work. Fixed.
</li><li>Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported.
</li><li>The column name C_CURRENT_TIMESTAMP did not work in the last release.
</li><li>OpenOffice compatibility: support database name in column names.
