实时计算flink版lookup join 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 2024-11-22

Processing Time Temporal Join语句

对于每条流式数据，可以关联一个外部维表数据源，为实时计算Flink版提供数据关联查询。

阿里云文档 2024-10-21

维表JOIN语句

对于每条流式数据，可以关联一个外部维表数据源，为实时计算Flink版提供数据关联查询。

阿里云文档 2024-07-31

Join变更兼容性

本文为您介绍Regular Join、Interval Join、Temporal Join和Lookup Join变更的状态兼容性的详情。

阿里云文档 2024-05-30

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 2022-09-14 来自：开发者社区

flink lookup join 的proc_time可以出现在 sum这样的聚合函数里面吗？

共有7条

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跳转至： GO

更新时间 2022-09-15 10:13:19

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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