Hi Danny and Julian
Thanks, i did some researches after listened to your suggestions. It seems not an easy thing for me, but i will learn Calcite and Flink more and think about your thoughts. Best wishes, Trista Juan Pan [email protected] Juan Pan(Trista), Apache ShardingSphere On 10/22/2019 13:42，Danny Chan<[email protected]> wrote： You may need a computation framework like Apache Flink. Use MySQL and Cassandra as connector/dataSource and write the results to your sink. Best, Danny Chan 在 2019年10月22日 +0800 AM10:36，Juan Pan <[email protected]>，写道： Hi everyone, Thanks for your attention. I can not get a clear result after read most of Calcite document. So i send this email for your suggestion. Suppose there are two data storages, e.g, MySQL and Cassandra behind Calcite, and data is separately stored in two of them, can i execute a query, e.g `SELECT * FROM tb WHERE id = 1` simultaneously on two of data storages through Calcite? In other words, i want to get the final combined result from MySQL and Cassandra, which store part of data in different forms separately through Calcite. Looking forward to your suggestions and thoughts. Best wishes, Trista Juan Pan [email protected] Juan Pan(Trista), Apache ShardingSphere
