u/DMReader

I’ve been building a free SQL practice site focused on window functions, and one thing I kept wanting to build was a simple beginner-friendly cheat sheet so users could scroll through quickly while practicing.

So I made one.

It covers:

• PARTITION BY and ORDER BY
• ROW_NUMBER, RANK, DENSE_RANK
• LAG / LEAD
• Running totals
• Rolling averages
• Frame clauses
• Common window function patterns

I also added practice problems/examples throughout instead of making it just syntax definitions.

Free, no signup required:

PracticeWindowFunctions Cheat Sheet

Would love feedback from people learning or teaching SQL.