I built BQReady after realizing that most SQL practice platforms teach general syntax, while BigQuery interviews often test much more specific decisions: choosing the correct grain, using QUALIFY, working with arrays and UNNEST, defining window frames, avoiding duplicate-producing joins, and thinking about query efficiency. BQReady gives analysts a structured way to practice those skills using real public BigQuery datasets. Each problem includes clear requirements, staged hints, expected output columns, and a reviewed solution with an explanation of why the approach works. The question bank currently includes 200+ beginner, intermediate, and advanced problems. The SQL solutions have been dry-run in BigQuery, and multi-table questions were checked against the underlying data before publication. You can start with 10 complete problems for free, and the site also includes a step-by-step guide for setting up BigQuery Sandbox without a credit card. I’d especially appreciate feedback on the difficulty progression, problem wording, and anything that would make BQReady more useful for your next SQL interview. Thanks for checking it out!

BQReady

Practice BigQuery with real data and reviewed solutions

Practice BigQuery with real data and reviewed solutions