The Apache Calcite PMC is pleased to announce Apache Calcite release 1.11.0.

Nearly three months after the previous release, there is a long list of improvements and bug-fixes, many of them making planner rules smarter. The following are some of the more important ones.

Several adapters have improvements:

• The JDBC adapter can now push down DML (INSERT, UPDATE, DELETE), windowed aggregates (OVER), IS NULL and IS NOT NULL operators.
• The Cassandra adapter now supports authentication.
• Several key bug-fixes in the Druid adapter.

For correlated and uncorrelated sub-queries, we generate more efficient plans (for example, in some correlated queries we no longer require a sub-query to generate the values of the correlating variable), can now handle multiple correlations, and have also fixed a few correctness bugs.

New SQL syntax:

• CROSS APPLY and OUTER APPLY;
• MINUS as a synonym for EXCEPT;
• an AS JSON option for the EXPLAIN command;
• compound identifiers in the target list of INSERT, allowing you to insert into individual fields of record-valued columns (or column families if you are using the Apache Phoenix adapter).

A variety of new and extended built-in functions: CONVERT, LTRIM, RTRIM, 3-parameter LOCATE and POSITION, RAND, RAND_INTEGER, and SUBSTRING applied to binary types.

There are minor but potentially breaking API changes in [CALCITE-1519] (interface SubqueryConverter becomes SubQueryConverter and some similar changes in the case of classes and methods) and [CALCITE-1530] (rename Shuttle to Visitor, and create a new class Visitor<R>). See the cases for more details.

See the release notes; download the release.