Apache Calcite

Clone this repo:
  1. d4a4c8b Site: Add Vladimir Ozerov as committer by Stamatis Zampetakis · 34 hours ago master
  2. 8430023 [CALCITE-4158] In generated SQL, "*" should be followed by space (NobiGo) by NobiGo · 5 days ago
  3. 58cbb46 [CALCITE-4655] JdbcTable.scan throws NullPointerException (Ulrich Kramer) by Ulrich Kramer · 7 days ago
  4. 4e679f0 [CALCITE-4636] Switch out of agg mode when constructing RelCollation for aggregate functions (Rafay) by Rafay · 3 weeks ago
  5. e5477e7 [CALCITE-4619] `Full join` plan cannot be executed in MySQL (Jiasen Sheng) by shengjiasen · 2 weeks ago

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Apache Calcite

Apache Calcite is a dynamic data management framework.

It contains many of the pieces that comprise a typical database management system but omits the storage primitives. It provides an industry standard SQL parser and validator, a customisable optimizer with pluggable rules and cost functions, logical and physical algebraic operators, various transformation algorithms from SQL to algebra (and the opposite), and many adapters for executing SQL queries over Cassandra, Druid, Elasticsearch, MongoDB, Kafka, and others, with minimal configuration.

For more details, see the home page.