Presto Source Solution - From SQL to AST Abstract Grammar Tree

Previous Submitted Query for Presto Source Resolution Describes the principle of submitting SQL to Coordinator from client to client in Cli mode and JDBC mode. In this article, we will look at how SQL submission to Coordinator is preprocessed and how SQL becomes an AST abstract syntax tree. The source sequence diagram is as follows: Next, let ...

Posted on Wed, 22 Sep 2021 13:59:48 -0400 by brad_fears