flinkcdc SQL数据的相关内容

阿里云文档 2025-08-01

如何通过Spark SQL读写RDS PostgreSQL数据

云原生数据仓库 AnalyticDB MySQL 版支持提交Spark SQL作业，您可以通过View方式访问自建PostgreSQL数据库或云数据库 RDS PostgreSQL 版数据库。本文以RDS for PostgreSQL为例，介绍如何通过Spark SQL读写RDS for PostgreSQL数据。

阿里云文档 2025-04-17

通过Spark SQL读写SQL Server数据

云原生数据仓库 AnalyticDB MySQL 版支持提交Spark SQL作业，您可以通过View方式访问自建SQL Server数据库或云数据库 RDS SQL Server 版数据库。本文以云数据库 RDS SQL Server 版为例，介绍如何通过Spark SQL访问SQL Server数据。

阿里云文档 2025-03-24

通过Spark SQL读DLF管理的数据

数据湖构建 DLF（Data Lake Formation）提供了统一的元数据管理、统一的权限与安全管理、便捷的数据入湖能力以及一键式数据探索能力，您可以在云原生数据仓库 AnalyticDB MySQL 版中通过Spark SQL访问DLF中的元数据。

阿里云文档 2025-01-10

使用SQL查询存在数据延迟问题

问题现象在新增或更新数据后，使用SQL查询数据时无法立即获取最新数据，存在一定的延迟现象。可能原因在为数据表创建多元索引后，使用SQL查询数据时，如果多元索引包含SQL中涉及的所有数据列，则SQL引擎将自动选择该多元索引进行数据查询。更多信息，请参见索引选择策略。索引选择策略而多元索引中的数据可能存...

阿里云文档 2024-08-16

通过Spark SQL读写AWS S3外表

本文主要介绍如何在云原生数据仓库 AnalyticDB MySQL 版（AnalyticDB for MySQL）中使用Spark SQL读写AWS S3中的数据。

问答 2024-07-15 来自：开发者社区

flinkcdc读sql_server,任务不报错，也读不出数据，如何解决？

flinkcdc读sql_server,任务不报错，也读不出数据，如何解决？请参考图片：

问答 2024-05-29 来自：开发者社区

flinkcdc使用sql-client.sh 读取mysql中的数据，读取不到数据，是哪里有问题？

问答 2024-05-28 来自：开发者社区

flinkcdc用纯sql将数据写入mysql后，这种两张表的数据顺序能保证吗？

flinkcdc用纯sql将数据写入mysql后，然后再将主键写入hbase，写入mysql前判断数据在hbase中存不存在，这种两张表的数据顺序能保证吗？感觉乱了

问答 2024-05-07 来自：开发者社区

请问下 FLINKCDC SQL 能获取到数据的状态么？

请问下 FLINKCDC SQL 能获取到数据的状态么，我需要把状态写入到表里 INSERT UPDATE DELETE。

文章 2023-12-21 来自：开发者社区

我使用flinkcdc的sql形式进行全量同步，4张表，有两张表数据没进去，看日志，id怎么是null呢?

这个问题可能是由于以下原因导致的：表结构不一致：请检查四张表的结构是否一致，包括字段名、数据类型等。如果有任何不一致，需要修改表结构以保持一致。数据转换问题：在使用Flink CDC进行全量同步时，可能需要对源表中的数据进行一些转换操作，例如将日期字符串转换为日期对象等。请检查这些转换操作是否正...

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