Release 0.12.3

Minor Improvements

• Slightly optimised how DefaultEntity.scan() handles sub-transactions.
• Weight vectors that contain only ones are now removed during query binding.

Bugfixes

• Fixed the deferred fetching rule for the query planner.

Release 0.12.2

Bugfixes

• Fixed issue that arises when root folder or catalogue doesn't exist.

Release 0.12.1

Minor Improvements

• Added explicit catalogue version check during start-up.

Bugfixes

• Fixed ping gRPC command (thanks to @silvanheller)
• Fixed issue in DefaultEntity.Tx.optimize() that caused double entries in Index.
• Fixed error in selectivity calculation that caused certain queries to fail.
• Fixed error in parallelization calculation that lead low-cost queries to be parallelized.

Release 0.12.0

Version 0.12.0

Breaking Changes

*Re-organized catalogue; old instances of Cottontail DB cannot be used with version 0.12.0. Use migration tool migrate an instance.

Query Language

• Added support for ORDER BY-clauses and sub-SELECTS.
• NNS queries now only support a single query / weight vector. Batched NNS will be re-added in a future version with batched query support.
• All commands except for ping, begin, commit, rollback now return QueryResponseMessages
• Re-added support for SELECT DISTINCT projection (#68)

Transaction Support

• Added transaction support; Cottontail DB uses S2PL internally to maintain locks on database objects and enforce transaction isolation
• Added support for incremental updates to indexes upon INSERT, UPDATE or DELETE, if an indexes supports this (#10)

General

• Added PQ and VA indexes for nearest neighbour search
• Added column statistics that can be used for query planning
• Re-structured query planner, which should now scale better to more complex query plans

CLI

• Re-organised and extended existing CLI functionality.
• The system command now hosts commands that allow for introspection into the Cottontail DB execution engine
• Added a system migration command that allow for migration of old catalogue versions.

Bugfixes

• The results of entity optimisation are now persistent and visible once the operation completes (#67)

Release 0.10.5

Merge remote-tracking branch 'origin/master'

Release 0.10.4

Log4j dependencies are now set to implementation.

Signed-off-by: Ralph Gasser <[email protected]>

Release 0.10.3

Updated version.

Signed-off-by: Ralph Gasser <[email protected]>

Release 0.10.2

Merge branch 'dev'

Release 0.10.1

Changed signature of startup methods (standalone() & embedded())