A persistent tree map (work in progress) which might replace the storage of the database at some point in the far future.

display transactionStart in JMX listSessions operation, useful for debugging long-running transactions

Modify ALTER TABLE ADD to support adding multiple columns in one command.

Issue 380: ALTER TABLE ADD FOREIGN KEY with an explicit index didn't verify the index can be used, which would lead to a NullPointerException later on.

Issue 380: ALTER TABLE ADD FOREIGN KEY with an explicit index didn't verify the index can be used, which would lead to a NullPointerException later on.

The wrong kind of exception (NullPointerException) was thrown in a UNION query with an incorrect ORDER BY expression.

CSV tool: new feature to preserve the case sensitivity of column names (option caseSensitiveColumnNames).

Trying to convert a VARCHAR to UUID will now fail if the text contains a character that is not a hex digit, '-', or not a whitespace.

ALTER TABLE ALTER COLUMN no longer copies the data for widening conversions (for example if only the precision was increased) unless necessary.

Multi-threaded kernel: concurrently running an online backup and updating the database resulted in a broken (transactionally incorrect) backup file in some cases.

Multi-threaded kernel: concurrently running an online backup and updating the database resulted in a broken (transactionally incorrect) backup file in some cases.

add column type STRING_IGNORECASE to the kinds of columns we can change the length of without needing to copy the table

The database file locking mechanism "FS" (;FILE_LOCK=FS) did not work on Linux since version 1.3.161.

The script created by SCRIPT DROP did not always work if multiple views existed that depend on each other.