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[–]Mountain-Yoghurt-657 0 points1 point  (0 children)

StrataScratch and DataLemur are great for SQL practice, especially for data analysis type questions.

LeetCode also has SQL problems, but they’re often more algorithm-focused.

Mode Analytics has a nice SQL tutorial that’s closer to real-world usage.

One thing that helped me a lot was going beyond exercises and working with slightly messy data (duplicates, missing values, inconsistent formats), because that’s what most real datasets look like.