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DA0-002 · Question #29
DA0-002 Question #29: Real Exam Question with Answer & Explanation
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Data Acquisition and Preparation
Question
A data analyst needs to remove all duplicate values between two tables, "Employees" and "Managers," using SQL SELECT statements. Which of the following should the analyst use for this task?
Options
- ASELECT * FROM Employees UNION ALL SELECT * FROM Managers
- BSELECT * FROM Employees UNION SELECT * FROM Managers
- CSELECT * FROM Employees JOIN SELECT * FROM Managers
- DSELECT * FROM Employees CROSS JOIN SELECT * FROM Managers
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Topics
#SQL#Set operators#Data cleaning#Duplicate removal