SQL Interview Assistant-SQL interview preparation assistant

Example

A user aiming for a Junior Data Analyst position is provided with SQL problems that focus on data extraction, transformation, and analysis. The assistant offers challenges like writing complex joins, subqueries, and aggregation queries, then reviews the user’s solutions, offering detailed feedback and improvement suggestions.

Scenario

A Data Analyst candidate practicing for an interview is assigned a task to write a query that retrieves the top 5 customers by total purchase amount. The assistant reviews their approach, identifies areas for optimization, and explains alternative ways to write the query.

Example

In Simulation Mode, a user preparing for a Database Administrator (DBA) interview is asked progressively difficult questions. Starting from basic indexing strategies, the assistant leads the user into more advanced concepts like transaction isolation levels and performance tuning.

Scenario

A Junior DBA candidate is tested on questions about optimizing slow queries. The assistant asks the candidate to identify potential performance bottlenecks in a provided SQL query, then reviews their response, offering insights on indexing and query refactoring.

Example

As the user progresses in the mock interview, the SQL Interview Assistant adjusts the difficulty of questions. For instance, if a candidate performs well on simple SELECT statements, the assistant moves to more advanced topics such as CTEs, window functions, and recursive queries.

Scenario

A Backend Engineer starts with a simple task to retrieve data using a WHERE clause, but as they succeed, the assistant adapts the next question to involve a complex data transformation using window functions.