A workshop for practical SQL
SQLShed is a hands-on workshop where you learn SQL by building, breaking, and fixing real queries — running entirely in your browser against realistic datasets. No accounts. No setup. No risk.
Write and run SQL right next to each lesson. See results instantly, with friendly errors when something goes wrong.
Practice the SQL people actually use at work: filtering messy data, joins, grouping, nulls, dates, and safe updates.
Everything runs locally in your browser. Bring your own CSV files to the freeform playground — your data never leaves your machine.