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.