本例是一个基础 Demo，借助 Calcite 解析 SQL 获取源表和结果表，各位可在此基础上进行扩展从而支持更多的场景。 关于 Calcite Apache Calcite 是一款开源的动态数据管理框架，它提供了标准的SQL语言、多种查询优化和连接各种数据源的能力，但不包括数据存储、处理 ...

Found all over the world, calcite is the most stable form of calcium carbonate and is the main mineral found in limestone. We find calcite in the ocean, in shells or hard parts of marine organisms ...

如 JdbcToSparkConverter 可以把 JDBC 里的 table 转换为 Spark RDD。如果需要在一个 RelNode 中处理来源于异构系统的逻辑表，Calcite 要求先用 Converter 把异构系统的逻辑表转换为同一种 Convention。 RexNode Row-level expression 行表达式（标量表达式），蕴含的是对一行数据的处理 ...

A 1,156-ct calcite gemstone cut from a twin crystal presents an unusual phenomenon when the interior is viewed through the table. One observes a multitude of colored images of the lower pavilion ...

The Mogok Stone Tract in Myanmar (formerly Burma) is one of the world’s most famous sources of ruby, which often forms there in a calcite-marble host. Calcite may occur as an inclusion inside the ruby ...