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Which is faster, joins or subqueries?
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Data Analyst
Marketer
General
Explain that the answer depends on various factors like the database engine, query optimization, indexing, and data size. Provide examples of when each approach performs better.
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Hard Difficulty
Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.
SQL question
SQL questions test your ability to work with relational databases. Demonstrate your proficiency in writing queries, understanding database design, optimizing performance, and extracting meaningful information from structured data.