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By contrast, UNION ALL does not ____ duplicate rows between several SELECT statements, which is what sets it apart from the UNION operator

9. By contrast, UNION ALL does not ____ duplicate rows between several SELECT statements, which is what sets it apart from the UNION operator.

  1. Add
  2. Update
  3. Remove
  4. None

Answer: C) Remove

Explanation:

By contrast, UNION ALL does not remove duplicate rows between several SELECT statements, which is what sets it apart from the UNION operator.

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