Tableau Desktop Certified Professional — Question 106

What are two requirements to combine two tables by using a union? (Choose two.)

Answer options

• A. Related fields must have matching data types.
• B. Related fields must have different names.
• C. The tables must come from different connections.
• D. The tables must have the same number of fields.

Correct answer: A, D

Explanation

The correct answer is A and D because for a union operation to work, the fields being combined must have compatible data types and the same number of fields. Option B is incorrect as the field names do not need to match, and option C is not relevant since the tables can come from the same or different connections.