SQL171 questions · 3 capstones · final assessment
SQL Practice Workbook
SQL for data and AI roles on a 32-table SaaS dataset, validated on PostgreSQL and MySQL.
Realistic Python coding problems drawn from data and AI engineering work: logs, API payloads, model predictions, token usage and RAG pipelines.
Each question has a precise spec, three progressive hints, automated checks and a hidden reference solution, plus a timed Testing Mode and progress tracking.
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SQL171 questions · 3 capstones · final assessment
SQL for data and AI roles on a 32-table SaaS dataset, validated on PostgreSQL and MySQL.
NumPy & Pandas75 challenges · 2 phases + capstone
Guided, then independent Pandas challenges, ending in an end-to-end customer retention report.
NumPy & Pandas67 tasks · 2 phases + final challenge
Practise NumPy on a synthetic factory sensor dataset, from guided tasks to a final dashboard challenge.