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  1. What will be the result of the following query?
    WHERE end_date IS NULL 
    AND (title=’teller’ OR start_date < ‘2009-03-03’)
    1. Only those rows are selected whose “TITLE” should be ‘teller’
    2. Only those employee will be selected who joined the organisation prior to 2009
    3. Only those rows will be selected whose” end_date” should be NULL
    4. All of above
    5. None of these
Correct Option: C

Only those rows will be selected whose” end_date” should be NULL


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