SQL Interview Questions You Should Practice
A practical list of SQL interview questions to practice — joins, window functions, and how to explain your approach clearly.
SQL interview questions usually test joins, aggregations, window functions, and how clearly you explain an approach. Interviewers want to hear the grain of the table, how you avoid duplicates, and how you handle nulls or ties.
Practice a short list on repeat: second-highest value, inner vs left join, rolling averages, anti-joins, and GROUP BY vs windows. For each prompt, say the approach first, then the query pattern. An SQL interview quiz helps you score that explanation and spot thin answers.
When you get stuck, name the pattern out loud: ranking, anti-join, running total. Edge cases matter — ties in ranks, customers with no orders, null keys. Detailed AI feedback can comment on what your written answer left out while you stay in a structured quiz format.
Try the SQL track free on Interview Quiz: the first 2 questions include full speech tools and detailed feedback. Subscribe to finish the track and unlock the remaining questions.