Salesforce Certified Marketing Cloud Developer — Question 8

A developer built a complex dynamic email with many data variants. Rather than create test data manually, they want to use a subset of live data to validate the dynamic aspects of the email.
Which SQL function should be used to collect a representative sample from a larger data set?

Answer options

• A. OVER
• B. NTILE
• C. HAVING

Correct answer: A

Explanation

The OVER function is used in SQL to define a window of rows on which to perform calculations, making it ideal for sampling data from a larger dataset without altering the original dataset. NTILE divides the result set into a specified number of groups, which is not suitable for simply collecting a sample. HAVING is used to filter results after aggregation and does not help in sampling data directly.