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MCQ 1: Attributes in the group by clause having tuples with the same value are placed in
MCQ 2: Aggregate functions can be applied over a group of sets of tuples instead of just single tuple by using the clause
MCQ 3: The aggregate function count of an empty collection is said to be
MCQ 4: Built-in aggregate functions defined by SQL, ignore null values for their input collection, except the
MCQ 5: The attributes specified in the group by clause of the SQL statement, are used to form
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