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SQL interview questions and answers MAX aggregate function with subquery

ANS) Second highest price

In SQL interviews, candidates may be asked about using the `MAX` aggregate function with subqueries. This involves extracting the highest value from a specific column, often combined with a subquery to filter results based on this maximum value. The question assesses the candidate's understanding of aggregate functions, subqueries, and their ability to retrieve relevant information from a database by utilizing these SQL constructs. Strong candidates demonstrate proficiency in manipulating and analyzing data using these fundamental SQL concepts.

MAX(Price): This is an aggregate function that returns the maximum value in the 'Price' column. It is used to find the highest price in the 'Products' table.
Subqueries:

SELECT MAX(Price) FROM Products: This is a subquery enclosed in parentheses. It retrieves the maximum value from the 'Price' column in the 'Products' table.
The outer query then filters rows where the 'Price' is less than this maximum value. The purpose of this subquery is to find the second-highest price.
In summary, the code uses the MAX aggregate function to find the maximum price in the 'Products' table and a subquery to compare and filter prices, ultimately retrieving the second-highest price from the table.

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