实时计算 Flink版join 的相关内容

阿里云文档 2025-06-06

如何使用双流JOIN语句,有哪些语法和示例

Flink SQL支持对动态表进行复杂而灵活的连接操作，本文为您介绍如何使用双流JOIN语句。

问答 2023-05-23 来自：开发者社区

我有一个问题，当我使用两个Flink CDC 的表进行join并进行聚合，flink 会维护所有两？

我有一个问题，当我使用两个Flink CDC 的表进行join并进行聚合，flink 会维护所有两张表的状态数据么？好的，谢谢。但是我发现有一个 CDC 的实践（https://developer.aliyun.com/article/1167820）里使用到多张实时表进行Join，即使使用了压缩的 Kafka，那么对 ckp 的影响还是无法避免的。请教一下你们在实践中会考虑什么样的方式来进....

问答 2023-05-23 来自：开发者社区

一张Flink CDC表，一张维表，使用left join，有使用system_time关联，如果？

一张Flink CDC表，一张维表，使用left join，有使用system_time关联，如果cdc表之前某一天的数据变更了，并且维表的数据也变更了，会导致，那天的数据并没有重新计算，而只是把那天的数据变更成变化的那条数据，如果这样，那天的数据就错了，这个怎么办？

问答 2023-05-23 来自：开发者社区

Flink CDC中interval join 有什么办法可以把超过watermark又没匹配上的？

Flink CDC中interval join 有什么办法可以把超过watermark又没匹配上的数据收集到吗？？找了半天没找到可以设置sideOutputLateData的地方？

问答 2023-05-22 来自：开发者社区

Flink CDC中mysql cdc2.3 维表join丢数据，大家有遇到过吗？也没错误日志，这种

Flink CDC中mysql cdc2.3 维表join丢数据，大家有遇到过吗？也没错误日志，这种情况怎么排查？偶尔丢一条，过几天又丢一条

问答 2023-05-16 来自：开发者社区

flink sql interval left outer join左边数据来了右边数据没来情况下?

flink sql interval left outer join左边数据来了右边数据没来情况下会直接输出(left, null)，不会等待interval window结束仍没等到右边数据才输出吗？

问答 2023-05-14 来自：开发者社区

大佬们现在咋处理flink cdc interval join场景的，现在测试下来一直报？

大佬们现在咋处理flink cdc interval join场景的，现在测试下来一直报【StreamPhysicalIntervalJoin doesn't support consuming update and delete changes which is produced by node TableSourceScan】这种错

问答 2023-05-11 来自：开发者社区

flink sql维表join必须等值连接吗

select create_time ....... from log vdl left join dim_ip_local_range FOR SYSTEM_TIME AS OF vdl.create_time as dilr on int_ip >= dilr.start_num and int_ip 我想通过这种范围连接，批处理模式是可以的，...

问答 2023-05-09 来自：开发者社区

Flink CDC中实时聚合是指什么 join?

问答 2023-05-03 来自：开发者社区

表格存储Flink join ots维表的时候，出现了ots维表数据丢失的情况，这边看ots监控也有

表格存储Flink join ots维表的时候，出现了ots维表数据丢失的情况，这边看ots监控也有一些请求异常，麻烦帮忙看一下问题

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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