Oracle Database 11g The Complete Reference (Osborne ORACLE ...

Chapter 14: Some Complex Possibilities 245
EMILY TALBOT ANNE OF GREEN GABLES 20-JAN-02 18.00 4.00 .8
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.8
FRED FULLER JOHN ADAMS 01-MAR-02 28.00 14.00 2.8
TRUMAN 20-MAR-02 19.00 5.00 1
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3.8
GERHARDT KENTGEN WONDERFUL LIFE 02-FEB-02 31.00 17.00 3.4
THE MISMEASURE OF 05-MAR-02 20.00 6.00 1.2
MAN
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4.6
JED HOPKINS INNUMERACY 22-JAN-02 21.00 7.00 1.4
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1.4
PAT LAVAY THE MISMEASURE OF 12-FEB-02 31.00 17.00 3.4
MAN
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3.4
ROLAND BRANDT THE SHIPPING NEWS 12-MAR-02 59.00 45.00 9
THE DISCOVERERS 01-MAR-02 48.00 34.00 6.8
WEST WITH THE NIGHT 01-MAR-02 48.00 34.00 6.8
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22.6
We can eliminate the DaysOut display and focus on the late fees, showing the fees due on
each of the return dates:
clear compute
clear break
select ReturnedDate, Name,
SUM((ReturnedDate-CheckoutDate -14)*0.20) LateFee
from BOOKSHELF_CHECKOUT
where ReturnedDate-CheckoutDate > 14
group by ReturnedDate, Name
order by ReturnedDate, Name;
RETURNEDD NAME LATEFEE
--------- -------------------- ----------
20-JAN-02 EMILY TALBOT .8
22-JAN-02 JED HOPKINS 1.4
02-FEB-02 GERHARDT KENTGEN 3.4
12-FEB-02 PAT LAVAY 3.4
01-MAR-02 FRED FULLER 2.8
01-MAR-02 ROLAND BRANDT 13.6
03-MAR-02 DORAH TALBOT .4