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Flink SQL 如何在流式数据上使用LAG和LEAD函数

如何在流式数据源上使用分析函数LAG和EAD函数： kafka输入数据如： {"t":"2020-04-01T05:00:00Z", "id":"1", "speed":1.0} {"t":"2020-04-01T05:05:00Z", "id":"1", "speed":2.0} {"t":"20...

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实时数据分析：使用Flink实时发现最热Github项目

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阿里云实时计算 Flink支持哪几个流式数据输入？维表输入？结果表输出？

目前支持流式输入表有:大数据总线(DataHub)日志服务(LogService)消息列队(MQ）支持维表有:表格存储(TableStore)云数据库(RDS)支持输出表有:大数据总线(DataHub)日志服务(LogService)消息列队(MQ）表格存储(TableStore)云数据库(RDS)

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更新时间 2024-02-21 09:19:31

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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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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