The Apache Calcite team is pleased to announce the release of Apache
Calcite 1.21.0.
Calcite is a dynamic data management framework. Its cost-based
optimizer converts queries, represented in relational algebra, into
executable plans. Calcite supports many front-end languages and
back-end data engines, and includes an SQL parser and, as a
sub-project, the Avatica JDBC driver.
The release comes two months after 1.20.0. It includes more than 100
resolved issues, comprising a large number of new features as well as
general improvements and bug-fixes.
It is worth highlighting that Calcite now:
* supports implicit type coercion in various contexts;
* allows transformations of Pig Latin scripts into algebraic plans;
* provides an implementation for the main features of MATCH_RECOGNIZE in the
Enumerable convention;
* supports correlated ANY/SOME/ALL sub-queries;
* introduces anonymous types based on ROW, ARRAY, and nested collection;
* brings new join algorithms for the Enumerable convention.
You can start using it in Maven by simply updating your dependency to:
<dependency>
<groupId>org.apache.calcite</groupId>
<artifactId>calcite-core</artifactId>
<version>1.21.0</version>
</dependency>
If you'd like to download the source release, you can find it here:
https://calcite.apache.org/downloads/
You can read more about the release (including release notes) here:
https://calcite.apache.org/news/2019/09/11/release-1.21.0/
We welcome your help and feedback. For more information on how to
report problems, and to get involved, visit the project website at:
https://calcite.apache.org/
Thanks to everyone involved!
Stamatis Zampetakis, on behalf of the Apache Calcite Team
