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Where and how to practice SQL
Side-by-side comparisons of the websites and apps people use to get ready for SQL interviews.
StrataScratch vs DataLemur: how they differ and when to use each
StrataScratch vs DataLemur for SQL interview prep: what each covers, what's free, and when another option fits better. Facts checked on each site.
Best app to learn SQL on iPhone: 8 apps compared by use case
The best app to learn SQL on iPhone depends on your goal: beginner lessons, offline practice or interview prep. 8 apps checked on the App Store.
Where to practice SQL: 8 sites and apps compared by use case
Where to practice SQL, by goal: free beginner sites, harder exercises and interview prep. Each option checked on its own site, with what to watch out for.
