"Flink CDC sql中：select from where 和 from where select 的区别在哪里？就比如查看表a，字段b等于1的数据，一种写法是：select from a where b=1 另一种写法是：from a where b=1 select ，这两种写法都能正确查出数据，但是我不太理解两种写法在本质逻辑上的区别？"

问答 2023-09-20 来自：开发者社区

flink sql中间insert xx select xx 的算子可以设置并行度么？

flink sql除了source 和sink，中间insert xx select xx 的算子可以设置并行度么？embed 配置如下：

问答 2023-08-28 来自：开发者社区

请教个flink sql 的时间比较问题 insert into A select * ？

请教个flink sql 的时间比较问题 insert into A select from B where timstamp >= '2023-01-01'; 这样的flinksql 咋写？insert into A select from B where timstamp >= to_TimeStamp('2023-01-01 00:00:00)';

问答 2023-03-21 来自：开发者社区

请问一个flink sql的job里多条select sql，可以共享相同的server id吗？

请教一下，一个flink sql的job里面多条select sql，可以共享相同的server id吗？

问答 2023-01-04 来自：开发者社区

使用flink sql，insert into mysql表 select from hive表，h

使用flink sql，insert into mysql表 select from hive表，hive表中有个字段有表情符，无法写入mysql，mysql已设置为utf8mb4编码，使用mysql客户端是可以写进去的，哪位解决过或知道原因的吗？

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更新时间 2024-03-17 10:08:06

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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。

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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