Apache infrastructure

Apache XTable (incubating) is a cross-table converter for lakehouse table formats that facilitates interoperability across data processing systems and query engines.

Stack trace visualizer

A converter that generates a bash one-liner from an SQL Select query (no DB necessary)

A slightly moist lipstick-on-pig clone for Apache Hive

A list of learning materials to understand databases internals

📓 A series of Jupyter notebooks to demonstrate the functionality of Apache Calcite

Shared files, presentations, and other materials

An efficient database query optimizer for large complex join queries