16 点作者 NickSingh将近 3 年前

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!<p>Even if you aren't job hunting, these tricky SQL questions are pretty fun to practice on.

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SimonWaldherr超过 2 年前

if you like playing around with data using SQL you might also like my sql-examples repository on github (<a href="https://github.com/SimonWaldherr/sql-examples" rel="nofollow">https://github.com/SimonWaldherr/sql-examples</a>). There is an online SQL editor (based on SQLite) with example queries. Feel free to expand the project and add new examples. Pull requests are welcome.

dirslashls将近 3 年前

Nice one. How do you decide the difficulty of each problem? One hard problem seemed easy using analytic functions while a medium problem felt hard as it required a self-join the realization of which is the harder part.

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ElCapitanMarkla超过 2 年前

That’s really cool. Nice work

llagerlof超过 2 年前

I loved it.

Show HN: DataLemur – Ace the SQL Interview!

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Show HN: DataLemur – Ace the SQL Interview!

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