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  1. Which one of the following method is used to retrieve the number of rows affected by an INSERT, UPDATE, or DELETE query?

    2. A.

     num_rows()
    B.

     affected_rows()
    C.

     changed_rows()
    D.

     new_rows()

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    Answer : Option B

    Explanation :

    The method num_rows() is only useful for determining the number of rows retrieved by a SELECT query. But to retrieve the number of rows affected by INSERT, UPDATE, or DELETE query, use affected_rows().

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