Flink（十四）【Flink SQL（中）查询】（1）https://developer.aliyun.com/article/1532319 4、特殊语法 - TopN 目前在Flink SQL中没有能够直接调用的TOP-N函数，而是提供了稍微复杂些的变通实现方法，是固定写法，特殊支持的over用法。 1）语法 ...

文章 2024-06-07 来自：开发者社区

Flink（十四）【Flink SQL（中）查询】（1）

前言接着上次写剩下的查询继续学习。 Flink SQL 查询环境准备： # 1. 先启动 hadoop myhadoop start # 2. 不需要启动 flink 只启动yarn-session即可...

问答 2024-05-20 来自：开发者社区

我自己测试flink cdc 读取MySQL表，通过sql client映射表后，去查询，没有数据？

我自己测试flink cdc 读取MySQL表，通过sql client映射表后，去查询，没有数据，任务直接finshed了是什么原因？但是我任务本地idea是可以跑的

文章 2024-03-09 来自：开发者社区

Flink 提供了一种名为 Flink SQL 的查询语言，它支持多种数据库之间的 DDL 语句转换

Flink 提供了一种名为 Flink SQL 的查询语言，它支持多种数据库之间的 DDL 语句转换。Flink SQL 可以在不同的数据库之间执行相同的 DDL 语句，从而实现数据源和目标数据库之间的同步。要使用 Flink SQL 进行不同数据库之间的 DDL 语句转换，您需要按照以下步骤操作：添加 Flink SQL 依赖项到您的...

文章 2024-02-24 来自：开发者社区

Flink SQL 问题之查询时报错如何解决

问题一：使用 SQL Client，进行hive查询时报错：命名有了flink-connector-hive_2.11-1.12.0.jar，还是报java.lang.ClassNotFoundException: org.apache.flink.connectors.hive.HiveSource 麻烦看一下使用 SQL Client，进行hive查询时报错： &nbs...

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