Which statement about the union of two text arrays in Appian is correct?

Which statement about the union of two text arrays in Appian is correct?

• A. Duplicates are preserved
• B. The function returns an error if duplicates exist
• C. Duplicates are removed in the result
• D. Only unique elements from the first array are returned

Answer: (C)

When you union two text arrays in Appian, you’re merging their elements and removing duplicates so you end up with a list of distinct values that appear in either array. This is why duplicates don’t show up in the result—elements from both inputs are included, but each value appears only once. It’s not an error to have duplicates in the inputs, and you don’t get only the first array’s elements. For example, union(["apple","banana","apple"], ["banana","cherry"]) yields a list with "apple", "banana", and "cherry" (order depends on input order).

When you union two text arrays in Appian, you’re merging their elements and removing duplicates so you end up with a list of distinct values that appear in either array. This is why duplicates don’t show up in the result—elements from both inputs are included, but each value appears only once. It’s not an error to have duplicates in the inputs, and you don’t get only the first array’s elements. For example, union(["apple","banana","apple"], ["banana","cherry"]) yields a list with "apple", "banana", and "cherry" (order depends on input order).