是的，Flink CDC 3.0 对于字符串类型的切片键（sharding key）确实存在一些问题，它不能直接进行切分。这是因为 Flink CDC 3.0 默认使用 HashPartitioner 对数据进行分区，而 HashPartitioner 只能处理数值类型的键。为了解决这个问题，你可...

flink cdc 3.0对切片key是字符串不能进行切分吗？

Flink CDC 3.0 确实支持对切片key进行字符串切分。您可以使用STRING_SPLIT函数，根据指定的分隔符将目标字符串拆分为子字符串，并返回子字符串列表。例如，如果需要按照逗号进行切分，可以在配置中使用'table-name' = 't_process_wihistory\d{1,2}...

flink cdc 3.0对切片key是字符串不能进行切分吗？

Apache Flink SQL目前还不支持直接解析JSON字符串并将其转换为预期的数据类型

Apache Flink SQL目前还不支持直接解析JSON字符串并将其转换为预期的数据类型。你可以在Flink SQL中使用STRING_TO_ARRAY函数将字符串转换为数组。以下是一个示例，展示了如何将字符串转换为数组： SELECT STRING_TO_ARRAY(JSON_QUERY('...

Flink CDC中“null”是字符串不是空转不了long？

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更新时间 2024-05-13 13:52:38

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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