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<?xml version="1.0" encoding="ISO-8859-15"?>
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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN" "http://forrest.apache.org/dtd/document-v20.dtd">
<document>
<header>
<title>HsqlDB</title>
</header>
<body>
<p>
DdlUtils supports the <a href="ext:hsqldb">HSQLDB</a> database, version <strong>1.7.2</strong> or newer.
SQL Documentation for HSQLDB can be found in the distribution, and for the newest version
<a href="ext:hsqldb/sql-syntax">here</a>.
</p>
<p>&nbsp;</p>
<p>
Platform identifier:
</p>
<ul>
<li><code>HsqlDb</code></li>
</ul>
<p>&nbsp;</p>
<p>
Recognized JDBC driver:
</p>
<ul>
<li><code>org.hsqldb.jdbcDriver</code></li>
</ul>
<p>&nbsp;</p>
<p>
Recognized JDBC sub protocol:
</p>
<ul>
<li><code>jdbc:hsqldb</code></li>
</ul>
<p>&nbsp;</p>
<table>
<tr>
<td class="platformPropName">The database supports SQL comments</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">The database supports delimited identifiers</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">The database's maximum identifier length</td>
<td class="platformPropValue">unlimited</td>
</tr>
<tr>
<td class="platformPropName">The database supports default values for <code>LONG</code> types</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">DdlUtils uses sequences for identity columns</td>
<td class="platformPropValue">no</td>
</tr>
<tr>
<td class="platformPropName">The database supports non-primary key columns as identity columns</td>
<td class="platformPropValue">no</td>
</tr>
<tr>
<td class="platformPropName">The database allows INSERT/UPDATE statements to set values for identity columns</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">DdlUtils can read back the auto-generated value of an identity column</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">The database supports non-unique indices</td>
<td class="platformPropValue">yes</td>
</tr>
<tr>
<td class="platformPropName">DdlUtils can create a database via JDBC</td>
<td class="platformPropValue">no</td>
</tr>
<tr>
<td class="platformPropName">DdlUtils can drop a database via JDBC</td>
<td class="platformPropValue">no</td>
</tr>
</table>
<p>&nbsp;</p>
<table>
<tr>
<th class="typeMappingJdbcType">JDBC Type</th>
<th class="typeMappingNativeType">Database Type</th>
<th class="typeMappingComments">Additional comments</th>
</tr>
<tr>
<td>ARRAY</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>BIGINT</td>
<td>BIGINT</td>
<td></td>
</tr>
<tr>
<td>BINARY</td>
<td>BINARY</td>
<td></td>
</tr>
<tr>
<td>BIT</td>
<td>BOOLEAN</td>
<td>Will be read back as BOOLEAN</td>
</tr>
<tr>
<td>BLOB</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>BOOLEAN</td>
<td>BOOLEAN</td>
<td>BOOLEAN is supported natively by Hsqldb only since version 1.7.2</td>
<td></td>
</tr>
<tr>
<td>CHAR</td>
<td>CHAR</td>
<td>The size is optional because per default Hsqldb does not enforce it</td>
</tr>
<tr>
<td>CLOB</td>
<td>LONGVARCHAR</td>
<td>Will be read back as LONGVARCHAR</td>
<td></td>
</tr>
<tr>
<td>DATALINK</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>DATE</td>
<td>DATE</td>
<td></td>
</tr>
<tr>
<td>DECIMAL</td>
<td>DECIMAL</td>
<td>Precision and scale are ignored by Hsqldb, as it uses unlimited precision and scale</td>
</tr>
<tr>
<td>DISTINCT</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>DOUBLE</td>
<td>DOUBLE</td>
<td></td>
</tr>
<tr>
<td>FLOAT</td>
<td>DOUBLE</td>
<td>Will be read back as DOUBLE</td>
</tr>
<tr>
<td>INTEGER</td>
<td>INTEGER</td>
<td></td>
</tr>
<tr>
<td>JAVA_OBJECT</td>
<td>OBJECT</td>
<td></td>
</tr>
<tr>
<td>LONGVARBINARY</td>
<td>LONGVARBINARY</td>
<td></td>
</tr>
<tr>
<td>LONGVARCHAR</td>
<td>LONGVARCHAR</td>
<td></td>
</tr>
<tr>
<td>NULL</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>NUMERIC</td>
<td>NUMERIC</td>
<td>Precision and scale are ignored by Hsqldb, as it uses unlimited precision and scale</td>
</tr>
<tr>
<td>OTHER</td>
<td>OTHER</td>
<td></td>
</tr>
<tr>
<td>REAL</td>
<td>REAL</td>
<td></td>
</tr>
<tr>
<td>REF</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>SMALLINT</td>
<td>SMALLINT</td>
<td></td>
</tr>
<tr>
<td>STRUCT</td>
<td>LONGVARBINARY</td>
<td>Will be read back as LONGVARBINARY</td>
</tr>
<tr>
<td>TIME</td>
<td>TIME</td>
<td></td>
</tr>
<tr>
<td>TIMESTAMP</td>
<td>TIMESTAMP</td>
<td></td>
</tr>
<tr>
<td>TINYINT</td>
<td>SMALLINT</td>
<td>JDBC's TINYINT requires a value range of -255 to 255, but HsqlDb's is only -128 to 127<br/>
Will be read back as SMALLINT</td>
</tr>
<tr>
<td>VARBINARY</td>
<td>VARBINARY</td>
<td></td>
</tr>
<tr>
<td>VARCHAR</td>
<td>VARCHAR</td>
<td>The size is optional because per default Hsqldb does not enforce it</td>
</tr>
</table>
</body>
</document>