实时计算 Flink版sql dynamic 的相关内容

文章 2024-08-22 来自：开发者社区

Flink SQL 在快手实践问题之使用Dynamic Cumulate Window绘制直播间累计UV曲线如何解决

问题一：CUMULATE窗口函数相比传统方案有哪些优点？ CUMULATE窗口函数相比传统方案有哪些优点？参考回答： CUMULATE窗口函数的优点包括使用窗口结束时间作为横坐标，确保每个点的纵坐标是对应时间点的累计值，使曲线在回溯历史或作业failover时都能完全还原，且分维度值相加等于总维度值；同时，使用两阶段聚合防止distinct key倾...

问答 2024-07-23 来自：开发者社区

如何在Flink SQL中使用Dynamic Cumulate Window绘制直播间累计UV曲线？

文章 2022-02-15 来自：开发者社区

Flink Table/SQL API 规划 —— Dynamic Table

动态表的概念是社区很早就提出的但并没有全部实现下文中所有介绍都是基于已有规划和proposal给出的，可能与之后实现存在出入仅供参考概念动态表直观上看是一个类似于数据库中的Materialized View概念。动态表随着时间改变；类似静态的batch table一样可以用标准SQL进行查询然后一个新的动态表；可以和流无损地互相转换(对偶的)。对现有的API最大的改进关键在表的内容随着时间.....

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更新时间 2024-08-23 12:59:17

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实时计算Flink版

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实时同步

MySQL 到 Hologres

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功能对比

开源Flink对比

成本优化

作业自动调优