DataLemur – Ace the SQL Interview!
I just launched a new free SQL practice platform today called DataLemur! I'm the author of Ace the Data Science Interview, and a lot of our readers wanted to practice the SQL questions from the book, so we decided to make DataLemur free and open! Even if you aren't job hunting, these tricky SQL questions are pretty fun to practice on.
In plain words
DataLemur is a free SQL practice platform designed to help users prepare for technical interviews and improve their SQL skills. It features practice questions drawn from "Ace the Data Science Interview," a book by the platform's creator. The platform is open to anyone interested in working through challenging SQL problems, whether they are actively job hunting or simply looking to sharpen their skills.
written from the facts on this page · September 2026
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