DataCraft Lab
Master SQL
Data
Engineering
Practice with real interview questions from top companies. Get instant feedback and build the skills that define modern data professionals.
How DataCraft Lab Works
Choose a Challenge
Browse 150+ real interview questions from top companies, organized by topic and difficulty.
Write & Test Code
Code in our distraction-free editor with SQL, Python, PySpark, or YAML challenges.
Get Instant Feedback
See results immediately and understand where you can improve with detailed explanations.
Track Your Growth
Monitor your progress, review optimal solutions, and build confidence for interview day.
Practice & Master Data Engineering
Choose your language, pick your difficulty level, start solving.
SQL
Query, join, aggregate
Python
Data structures & algorithms
PySpark
Big data transformations
Learn by Technology
Master the essential tools of modern data engineering.
SQL
Queries, joins & window functions
Python
Data structures & algorithms
PySpark
Big data transformations
YAML
Configuration & pipelines
YouTube Tutorials
Video lessons & walkthroughs
Interview Prep
Real company questions
Why Choose DataCraft Lab?
Distraction-Free Editor
Clean, minimal interface focused on problem-solving, not clutter.
Instant Feedback
Run queries and see results in real-time against actual schemas.
Learn from Solutions
View optimal solutions and understand the "why" behind them.
Works Everywhere
Practice on any device with our responsive, modern interface.
Ready to Ace Your Data Engineering Interview?
Start practicing with SQL, Python, PySpark, and more. Track your progress today.