Status: Awaiting Review
Affects Version/s: 19.1
Fix Version/s: None
Version 2.4.1 for Java 8 supports java.time classes in JDBC and adds many enhancements. These include table spaces for disk-based tables, more compatibility functions and improved SQL routine support.
Version 2.3.4 added the UUID type for columns, SYNONYM for tables and functions, PERIOD predicates, and auto-updated TIMESTAMP columns on row updates. Other new features included the ability to cancel long-running statements from JDBC as well as from admin sessions, and UTF-16 file support for text table sources, in addition to 8-bit text files. MySQL compatibility for REPLACE, INSERT IGNORE and ON DUPLICATE KEY UPDATE statements.
Each release incorporates extensive code reviews, enhancements and bug fixes.
HSQLDB (HyperSQL DataBase) is the leading SQL relational database software written in Java. It offers a small, fast multithreaded and transactional database engine with in-memory and disk-based tables and supports embedded and server modes. It includes a powerful command line SQL tool and simple GUI query tools.
HSQLDB supports the widest range of SQL Standard features seen in any open source database engine: SQL:2011 core language features and an extensive list of SQL:2011 optional features. It supports full Advanced ANSI-92 SQL with only two exceptions. Many extensions to the Standard, including syntax compatibility modes and features of other popular database engines, are also supported.
Version 2.4.1 is fully multithreaded and supports high performance 2PL and MVCC (multiversion concurrency control) transaction control models. See the list of features in version 2.4.1.
HSQLDB has been constantly developed over 17 years and is used as a database and persistence engine in over 1700 Open Source Software projects and many commercial products. The latest versions are extremely stable and reliable. It is known for its small size, ability to execute completely or partly in memory, its flexibility and speed.
HSQLDB is completely free to use and distribute under our licenses, based on the standard BSD license and fully compatible with all major open source licenses.