实时计算 Flink版sql cdc 的相关内容

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 2025-02-25

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 2025-02-24

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 2025-02-06

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 2024-08-26 来自：开发者社区

flink sql cdc 同步 oracle到Doris报错提示，怎么解决？

flink sql cdc 同步 oracle到Doris报错提示，flink是1.16，cdc是2.3，oracle是19c，报错：Caused by: java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:xxxx但是又能同步数据，奇怪的很

问答 2024-07-31 来自：开发者社区

Flink sql cdc 增量聚合有文档吗？比如说基于CDC，算交易额的汇总

问答 2024-05-28 来自：开发者社区

flink sql mysql cdc，虚拟流表中出现上游表没有的字段，不报错怎么办？

flink sql mysql cdc，虚拟流表中出现上游表没有的字段，不报错？

问答 2024-05-28 来自：开发者社区

flink sql配了5个mysql cdc表，如何避免这种情况？

请教一个问题，flink sql配了5个mysql cdc表，并且join后产生宽表，sink到kafka。当一个表的某个字段值被改变，会往kafka发送多条数据，导致下游消费会计算多次，如何避免这种情况？

文章 2024-05-23 来自：开发者社区

实时计算 Flink版产品使用合集之SQL Server CDC是否支持抽取SQL Server视图

问题一：Flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？ Flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？ JSON_QUERY('{"a":[{"c":"c1"},{"c":"c2"}]}', 'lax $.a[*].c') 这个内置函数返回的是string: '["c1","...

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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

产品控制台

产品文档

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