实时计算 Flink版tablefunction 的相关内容

flink问题之在通过TableFunction实现行转列时Row一直是空如何解决

问题一：flink1.10 定义表时，把json数组声明成STRING类型的，查询出来是空可以通过以下步骤还原车祸现场： kafka topic: test_action kafka message: {"action": [{"actionID": "id001", "actionName": ...

flink1.10在通过TableFunction实现行转列时，Row一直是空

我的业务场景，是想实现一个行转列的效果。然后通过自定义tableFunction来实现。在自定义tableFunction的时候，如果SQL中传入的是ARRAY类型，那么在eval方法接收到的就是Row[]，问题出在，Row[]中的数据获取不到，里面的元素都是NULL 通过下面的步骤和代码可还...

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flink1.11 tablefunction

我这面在定义一个表函数，通过继承TableFunction完成操作，但是eval方法中的参数类型都是java基本类型（至少看到的demo都是如此），想问一下eval方法中可以传flink 内部类型吗，比如说我想在eval()方法中传递Row类型要怎么操作，eval(Row row) *来自志愿者整理...

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更新时间 2024-02-27 09:18:30

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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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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