The Apache Calcite PMC is pleased to announce Apache Calcite release 1.15.0. In this release, three months after 1.14.0, 50 issues are fixed by 22 contributors. Among more modest improvements and bug-fixes, here are some features of note:
- [CALCITE-707] adds DDL commands to Calcite for the first time, including CREATE and DROP commands for schemas, tables, foreign tables, views, and materialized views. We know that DDL syntax is a matter of taste, so we added the extensions to a new “server” module, leaving the “core” parser unchanged;
allows dynamic parameters in the
- [CALCITE-1913] refactors the JDBC adapter to make it easier to plug in a new SQL dialect;
- [CALCITE-1616] adds a data profiler, an algorithm that efficiently analyzes large data sets with many columns, estimating the number of distinct values in columns and groups of columns, and finding functional dependencies. The improved statistics are used by the algorithm that designs summary tables for a lattice.
Calcite now supports JDK 10 and Guava 23.0. (It continues to run on JDK 7, 8 and 9, and on versions of Guava as early as 14.0.1. The default version of Guava remains 19.0, the latest version compatible with JDK 7 and the Cassandra adapter’s dependencies.)
This is the last release that will support JDK 7.