SQL From Scratch
You keep meaning to learn SQL and a tutorial keeps stalling at JOINs. Build SELECT through window functions step by step, so you finally write queries instead of asking for them.
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Advanced SQL
You can write a join in your sleep and complex queries still humble you. Master window functions, CTEs, recursion, and optimization, so you handle the queries other people give up on.
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SQL for Data Analysis
You know SQL syntax and analyst SQL is a different sport. Learn to do real cohort, funnel, and time-on-anything work in SQL, so you move from queries to analyses.
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SQL Interview Prep
The interviewer wants you to write SQL on a shared screen and think out loud. Learn the 80% of questions that get asked and the reasoning patterns, so you stop freezing on round one.
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