实时计算 Flink版sql优化的相关内容

阿里云文档 2025-04-22

阿里云Flink SQL如何基于SPL实现弱结构化分析

本文介绍Flink SQL基于SPL实现弱结构化分析的操作步骤。

阿里云文档 2025-04-22

阿里云Flink SQL如何基于SPL实现行过滤与列裁剪

本文介绍Flink SQL用SPL完成行过滤与列裁剪的操作步骤。

阿里云文档 2025-02-25

Flink SQL Join快速入门

Flink SQL支持在动态表上进行复杂的连接操作，提供多种查询语义和join类型。使用时需避免引发笛卡尔积，因为Flink SQL不支持这种操作，会导致查询失败。默认情况下，join顺序未优化。为提高性能，可在FROM子句中调整表顺序，将更新频率最低的表放在前面，最高的放在后面。

阿里云文档 2025-02-06

DataWorks新版数据开发中的Flink SQL Streaming节点支持使用标准SQL语句定义实时任务处理逻辑。Flink SQL Streaming具有易用性、丰富的SQL支持、强大的状态管理及容错能力，兼容事件时间和处理时间，并可灵活扩展。该节点易于与Kafka、HDFS等系统集成，提供详尽的日志和性能监控工具。您只需在DataWorks项目中添加Flink SQL Streaming...

阿里云文档 2025-01-21

Flink Hive SQL作业快速入门

实时计算Flink版支持使用Hive方言创建批处理作业，通过兼容Hive SQL语法增强与Hive互操作性，便于从现有Hive作业平滑迁移至实时计算管理控制台。

问答 2024-06-05 来自：开发者社区

在Flink CDC中现在的sql server 磁盘iops低,io很高，整体的优化思路是什么？

在Flink CDC中现在的sql server 磁盘iops低,io很高，如果想要把这个io降下来，整体的优化思路应该是怎样的?

问答 2023-08-13 来自：开发者社区

各位老师，这个语法是 flink sql 优化手段吗？

问答 2023-06-11 来自：开发者社区

大佬，Flink CDC中同一SQL中的多表，同源的情况下，IO有做优化整合吗，还是一个表拉一份全?

大佬，Flink CDC中同一SQL中的多表，同源的情况下，IO有做优化整合吗，还是一个表拉一份全量binlog？

问答 2023-03-15 来自：开发者社区

Flink这一段sql逻辑还能咋优化吗？

Flink这一段sql逻辑还能咋优化吗？操作就是关联维表取第一条和最后一条

问答 2023-02-27 来自：开发者社区

Flink SQL查询一亿条数据，性能怎么优化？

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更新时间 2024-06-06 19:31:27

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

立即开通

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实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优