实时计算 Flink版物化视图聚合的相关内容

阿里云文档 2024-09-12

使用UDAF实现数据排序和聚合

本文提供了一个自定义聚合函数（UDAF），实现将多行数据合并为一行并按照指定列进行排序，并以居民用电户电网终端数据为例，介绍如何在实时计算控制台使用该函数进行数据聚合和排序。

阿里云文档 2024-08-05

窗口聚合

实时计算Flink版的窗口聚合支持老语法分组窗口聚合（Group Window Aggregation）和新语法窗口表值函数聚合（Window TVF Aggregation）两种形式。本文为您介绍窗口聚合新老语法详情、窗口表值函数和聚合语句无法合并的场景、以及新老语法对更新流的支持情况。

文章 2024-05-23 来自：开发者社区

实时计算 Flink版产品使用合集之在物化视图上进行聚合操作如何解决

问题一：Flink CDC物化视图能不能做聚合？ Flink CDC物化视图能不能做聚合？参考回答： Flink CDC支持实时数据流的捕获和变更数据的同步，可以进行INSERT, DELETE, UPDATE等操作。然而，对于物化视图是否能进行聚合的问题，目前存在一些不同的观点。一种观点认为，Flink SQL不支持对由插入、更新、删除的流进行分组...

问答 2023-12-01 来自：开发者社区

如何针对资讯聚合类业务场景搭建基于云消息队列Kafka版和实时计算Flink的实时数仓

本文介绍如何针对资讯聚合类业务场景搭建基于云消息队列 Kafka 版和实时计算Flink的实时数仓。

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更新时间 2024-07-03 21:35:46

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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