基于antlr4的sql解析，实现格式化，元数据，血源等自定义解析，包括hive

https://blog.csdn.net/QXC1281/article/details/89070285

Test code for apache calcite

The Lineage Analysis system for FlinkSQL supports advanced syntax such as Watermark, UDTF, CEP, Windowing TVFs, and CTAS.

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Grammars written for ANTLR v4; expectation that the grammars are free of actions.

Effective June 1, 2021: Phabricator is no longer actively maintained.