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      Question

      Which of the following statements about the UNION

      operator in SQL is correct?
      A It combines results of two queries and includes duplicate rows Correct Answer Incorrect Answer
      B It combines results of two queries and removes duplicate rows Correct Answer Incorrect Answer
      C It can combine queries with different number of columns Correct Answer Incorrect Answer
      D It works only with numeric data Correct Answer Incorrect Answer
      E It sorts the result automatically in descending order Correct Answer Incorrect Answer

      Solution

      It combines results of two queries and removes duplicate rows.

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