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Crucial Exams

CompTIA Data+ DA0-002 (V2) Practice Question

Your organization stores order data in different relational database engines, including PostgreSQL 16, MySQL 8 and Microsoft SQL Server 2022. You have been asked to deliver a single ANSI-SQL query that will run unchanged in all three systems. The query must calculate a column named order_type that returns the string "Bulk" when the quantity column is greater than 500 and "Regular" for all other rows. Which logical function or construct should you use inside the SELECT list to create that column while meeting the portability requirement?

  • DECODE function

  • NVL function

  • CASE expression

  • IIF function

CompTIA Data+ DA0-002 (V2)
Data Analysis
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