This release adds adapters for Elasticsearch and Druid. It is also now easier to make a JDBC connection based upon a single adapter.
We also added support for
SELECT without FROM
(equivalent to the
VALUES clause, and widely used in MySQL and PostgreSQL),
and added a
parameter to allow you to selectively enable this and other SQL features.
And, as usual, there are a couple of dozen bug-fixes and enhancements to planner rules and APIs.