The optional UNIQUE keyword instructs Oracle 12c to include only unique numeric values in its calculation.
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Q5: The GROUP BY clause can only be
Q6: Group functions are also known as aggregate
Q7: If a group function is used in
Q8: The MIN function can be used with
Q9: The DISTINCT keyword cannot be used with
Q11: By default,the AVG function will include NULL
Q12: By default,the SUM function assumes the ALL
Q13: The GROUP BY clause is used to
Q14: The COUNT(*)function is only used to count
Q15: AVG,COUNT,and STDDEV are all considered group functions.
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