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Oracle Database 11g Administrator

Oracle Exams Training Identify common database administrative tools available to a DBA

You need to analyze how long your orders to be shipped from the date that the
order is placed. To do this you must create a report that displays the customer
number, date order, date shipped and the number of months in whole numbers
from the time the order is placed to the time the order is shipped. Which statement
produces the required results?

A. SELECT custid, orderdate, shipdate,
ROUND(MONTHS_BETWEEN(shipdate,orderdate))
"Time Taken"
FROM ord;
B. SELECT custid, orderdate, shipdate,
ROUND(DAYS_BETWEEN(shipdate,orderdate))/30.
FROM ord;
C. SELECT custid, orderdate, shipdate,
ROUND OFF (shipdate-orderdate) "Time Taken"
FROM ord;
D. SELECT custid, orderdate, shipdate,
MONTHS_BETWEEN (shipdate,orderdate) "Time Taken".
FROM ord;

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Answer: A

Explanation:
Answer A shows the number of months (rounded to integer) between
the date of order and the date of shipment.
Incorrect Answers:
B: Function, function DAYS_BETWEEN shows number of days between shipping date
and order date.
C: Incorrect function ROUND OFF.
D: This command will show not rounded to integer value, like 8.6451613.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 30
Chapter 1: Selecting Data from Oracle