文章浏览阅读42次。> 本文聚焦 Apache Spark SQL 中用于查询执行剖析的 `EXPLAIN` 语句，系统讲解其语法、五种输出模式（默认 / EXTENDED / CODEGEN / COST / FORMATTED）的含义、输出格式与典型使用场景。通过阅读本文，你将掌握如何用 `EXPLAIN` 查看 Spark 的 Parsed / Analyzed / Optimized ...

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