Common Interview Questions and Answers
Practice the most frequently asked interview questions with expert answers, approach tips, and AI-powered feedback.
124.5K views•3w ago
Explain anti-joins and how to implement them
SQL
Medium
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91.5K views•3w ago
Explain foreign keys and referential integrity
SQL
Easy
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69.3K views•3w ago
Explain correlated subqueries and provide an example
SQL
Hard
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86.1K views•3w ago
Explain the purpose of LAG and LEAD functions
SQL
Medium
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106.5K views•3w ago
What are EXISTS and NOT EXISTS and how do they differ from IN?
SQL
Medium
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116K views•3w ago
Describe set operations like UNION, INTERSECT, and EXCEPT
SQL
Medium
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127.9K views•3w ago
Explain the difference between RANK, DENSE_RANK, and ROW_NUMBER
SQL
Medium
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79.2K views•3w ago
What is the difference between CHAR and VARCHAR2?
SQL
Easy
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58.8K views•3w ago
What is a view in SQL and why use it?
SQL
Medium
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76.3K views•3w ago
What is a cross join and how does it differ from inner join?
SQL
Medium
64.9K Users PracticedPractice with This Question