I recently came across an insightful article on SQL Query Optimizers by @leiysky on Zhihu, and I must say it was excellent! To make it accessible to a wider audience, I have translated the piece into English. Enjoy reading!Please note that @leiysky deserves full credit for the quality of this article. Any mistakes are solely due to my inadequate translation skills.Alright, let's begin!During our recent conversation, Mr. Chi and I discussed his latest project at CMU called optd, which is a query ...