junwen12221 commented on issue #8284: URL: https://github.com/apache/shardingsphere/issues/8284#issuecomment-744012134
@tristaZero @guimingyue There is no problem with the process. In the past some days, I have been researching optimization. In my project, I have implemented the optimization rules of global secondary index. After completing the test, I will share it. SQLStatement to sqlnode of calculate is a robust development route. This is the case with one of my query engine implementations, but its performance is not as good as using relbuilder directly. One of the query language [HBT](https://github.com/MyCATApache/Mycat2/blob/526f1f40124695e64cacf6c3ea7828c523d406fa/doc/103-HBTlang.md) I have implemented is to use relbuilder directly. It differs from SQL language in syntax and lack of schema object and alias scope analysis and type derivation. If we implement these details, the method of directly translating SQL statement into relnode will become possible. On that day, we will only use caclite as optimizer. I've always been happy to review. I'm interested in the optimization part, and I may join the development in the optimization part. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
