b) Implement a stored PL/SQL function that finds a supplier who supplies the cheapest (lowest supply cost) or the dearest (highest supply cost) for a part specified by a user. The function should obtain the part key as its formal parameter, and it should return a string of values consisting of the supplier key, supplier name, and the cost (cheapest and dearest). Example of the string output are as follow: Supplier with cheapest cost: 1344, Supplier #000001344, $172.09. Supplier with dearest cost: 2882, Supplier #000002882, $791.07. Supplier with cheapest cost: 770, Supplier #000000770, $74.55. Supplier with dearest cost: 2308, Supplier #000002308, $826.35. Next use the function to list the string output as specified above for part numbers 3753, 43064, 57574 and 60000 using a select statement.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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b) Implement a stored PL/SQL function that finds a supplier who supplies
the cheapest (lowest supply cost) or the dearest (highest supply cost) for
a part specified by a user. The function should obtain the part key as its
formal parameter, and it should return a string of values consisting of the
supplier key, supplier name, and the cost (cheapest and dearest).
Example of the string output are as follow:
Supplier with cheapest cost: 1344, Supplier #000001344, $172.09.
Supplier with dearest cost: 2882, Supplier #000002882, $791.07.
Supplier with cheapest cost: 770,
Supplier with dearest cost: 2308,
Supplier#000000770, $74.55.
Supplier #000002308, $826.35.
Next use the function to list the string output as specified above for part
numbers 3753, 43064, 57574 and 60000 using a select statement.
Transcribed Image Text:b) Implement a stored PL/SQL function that finds a supplier who supplies the cheapest (lowest supply cost) or the dearest (highest supply cost) for a part specified by a user. The function should obtain the part key as its formal parameter, and it should return a string of values consisting of the supplier key, supplier name, and the cost (cheapest and dearest). Example of the string output are as follow: Supplier with cheapest cost: 1344, Supplier #000001344, $172.09. Supplier with dearest cost: 2882, Supplier #000002882, $791.07. Supplier with cheapest cost: 770, Supplier with dearest cost: 2308, Supplier#000000770, $74.55. Supplier #000002308, $826.35. Next use the function to list the string output as specified above for part numbers 3753, 43064, 57574 and 60000 using a select statement.
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