How can I prepare for an SQL interview?
An example of an AI chatbot conversation about SQL interview preparation.
How can I prepare for an SQL interview?
To prepare for an SQL interview, focus on key concepts like joins, subqueries, and indexing. Practice coding problems.
What are some common SQL interview questions?
Common questions include: Explain the difference between INNER JOIN and LEFT JOIN, and how to optimize a query.
Can you give me an example of a complex SQL query?
Sure! Here's an example: SELECT employee_id, COUNT() FROM sales GROUP BY employee_id HAVING COUNT() > 10; This finds employees with more than 10 sales.
How important is normalization in SQL?
Normalization is crucial as it reduces data redundancy and improves data integrity, making your database more efficient.
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