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51CTO
27 天
Flink SQL 四种 Join 方式详解:原理、场景与实战-51CTO.COM
本文将深入剖析每种 Join 的底层原理、适用场景,并通过完整代码示例演示实战用法,帮助读者掌握 Flink SQL Join 的选型与优化。 二、Regular Join:常规双流 Join 1. 定义与核心思想 Regular Join 是 Flink SQL 中最基础的 Join 类型,语法与标准 SQL 一致(如 INNER JOIN、LEFT JOIN)。
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