Hi everyone! My name is Georgy Lebedev, and I’m a part of Tarantool’s kernel development team. In 2021, we participated in the Google Summer of Code (GSoC) for the first time: one of the proposed projects was migration of SQL from VDBE to a JIT platform — that’s where my journey in Tarantool began.

Having a year of developing various toolchain components as educational projects under my belt and armed with the support of mentors (Nikita Pettik, Timur Safin, and Igor Munkin), I took on this project. While building a platform for JIT compilation of SQL queries in Tarantool virtually from scratch during just one summer, I have encountered some pitfalls and acquired, in my opinion, interesting knowledge and experience which I would like to share. This article will be of interest first and foremost to those who are interested in further maintaining this project, as well as to those who are considering implementing JIT compilation in their own SQL.

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