Afiniti Data Engineer Interview Questions
The questions to prepare for a Afiniti Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Use DENSE_RANK and a LEFT JOIN to return employees earning Afiniti's second-highest distinct salary.
Use DENSE_RANK and a department join to find employees earning the fourth-lowest distinct salary.
Explain how primary keys and unique keys differ in nullability, purpose, and table design in PostgreSQL.
Evaluates your understanding of set operations versus join semantics in SQL.
Find the second-highest distinct employee salary using PostgreSQL DISTINCT, filtering, and descending order.
Assesses your understanding of Python arithmetic operators and integer behavior.
Tests your Python fundamentals relevant to data engineering workflows.
Tests your algorithmic thinking and defensive programming in coding.
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Evaluates your ability to apply statistics and inference to practical data engineering problems.