SQL
SQL interview drills the full ladder — basic SELECT through window functions, recursive CTEs, query optimisation, and transaction-isolation reasoning. From data-analyst pre-screens to staff DBA architecture rounds.
What this skill is about
SQL interview drills the full ladder — basic SELECT through window functions, recursive CTEs, query optimisation, and transaction-isolation reasoning. From data-analyst pre-screens to staff DBA architecture rounds.
Topics we drill
- SQL Basics
- Window Functions
- Aggregation
- Joins Deep
- Indexes
- Query Optimization
- Transactions
- Advanced SQL
Why this matters at interviews
Real interviewers don’t just check if you know the syntax — they probe whether you’ve used the concept under production pressure. Our drills mirror that. Adaptive difficulty, named anti-patterns called out as you go, and a senior-staff voice that teaches the production vocabulary rather than dumbing it down.