Apache Calcite

Apache Calcite Java API

The Apache Calcite Java API provides SQL parsing, validation, query planning, and optimization capabilities for embedding in JVM applications. It exposes a relational algebra framework and pluggable optimizer rules for building custom query engines.

Documentation GitHub

Documentation

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Documentation

https://calcite.apache.org/docs/

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APIReference

https://calcite.apache.org/javadocAggregate/

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GettingStarted

https://calcite.apache.org/docs/tutorial.html