1: What is the purpose of the PIVOT operator in SQL?
2: How do you use the UNPIVOT operator?
3: What is the purpose of the ROLLUP and CUBE operators?
4: What are the differences between ROLLUP and CUBE?
5: How do you write a SQL query to find the top N records?
6: What is the purpose of the FETCH FIRST clause?
7: How do you use the ROWCOUNT function?
8: What are transactions, and how are they managed in SQL?
9: How do you ensure data consistency in a transaction?
10: What is a deadlock in SQL?
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