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阿里云文档 2025-10-28

基于MaxCompute UDF进行SQL分析

面对MaxCompute无法直接调用外部API的限制，本文将通过一个完整的实践案例，教您如何利用“离线IP库+UDF”的方案，在MaxCompute中高效地实现IP地址归属地分析。

阿里云文档 2025-10-28

o.execute_sql的结果怎么执行函数，自动序列化到服务端作为UDF使用？

文章 2024-06-10 来自：开发者社区

MaxCompute产品使用合集之在sql里调用自定义的udf时，设置一次同时处理的数据行数，是并行执行还是串行执行的

问题一：大数据计算MaxCompute这个参数这里设置的一次同时处理的数据行数，是并行执行还是串行执行的？在sql里调用自定义的udf时候，设置odps.sql.executionengine.batch.rowcount大数据计算MaxCompute这个参数这里设置的一次同时处理的数据行数，是并行执行还是串行执行的？ ...

问答 2024-04-22 来自：开发者社区

DataWorks sql中看到用到了一个自定义的udf，能搜到注册了这个函数，如何解决？

DataWorks sql中看到用到了一个自定义的udf，能搜到注册了这个函数，但是资源列表里面硬是搜不到资源里面对应的这个.py文件？

问答 2024-03-04 来自：开发者社区

大数据计算MaxCompute中SQL UDF 发布生产后，可以跨空间调用吗，哪位老师有用过的？

大数据计算MaxCompute中SQL UDF 发布生产后，可以跨空间调用吗，哪位老师有用过的？？

文章 2024-01-19 来自：开发者社区

Apache Spark是一个强大的分布式计算框架，Spark SQL是其一个核心模块，用于处理结构化数据。虽然Spark SQL内置了许多强大的函数和操作，但有时可能需要自定义函数来处理特定的数据需求。在Spark SQL中，可以使用UDF（User-Defined Functions）来自定义函数，以扩展Spark SQL的功能。本文将深入探讨如何使用UDF扩展Spark SQL，包括UDF....

文章 2024-01-05 来自：开发者社区

Flink SQL UDF（用户自定义函数）需要打包成JAR文件并上传到Flink集群中

Flink SQL UDF（用户自定义函数）需要打包成JAR文件并上传到Flink集群中，这是因为Flink SQL需要对UDF进行序列化和反序列化操作，以便在分布式环境中使用。将UDF打包成JAR文件可以确保UDF的代码和依赖项一起传递，并且可以在多个任务之间共享。虽然将UDF打包成JAR文件可能会增加一些复杂性ÿ...

问答 2024-01-04 来自：开发者社区

请问平台上flink sql UDF这个feature为什么一定要弄成打成jar上传这种方式呢?

请问平台上flink sql UDF这个feature为什么一定要弄成打成jar上传这种方式呢，这样用户体验不会很差么，用户不能直接在playground上写个类写个函数以字符串的方式传给后端嘛？

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更新时间 2024-08-08 14:17:55

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