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Problems are based on the following query: SELECT                                  P_CODE, P_QOH*P_PRICE FROM                                    PRODUCT WHERE                                 P_QOH*P_PRICE > (SELECT AVG(P_QOH*P_PRICE) FROM PRODUCT); Should you create an index? If so, what would the index column(s) be, and why should you create the index?

Problems are based on the following query: SELECT                                  P_CODE, P_QOH*P_PRICE FROM                                    PRODUCT WHERE                                 P_QOH*P_PRICE > (SELECT AVG(P_QOH*P_PRICE) FROM PRODUCT); Should you create an index? If so, what would the index column(s) be, and why should you create the index?

Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter11: Database Performance Tuning And Query Optimization
Section: Chapter Questions
Problem 28P: Problems 27 and 28 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE,...
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Problems are based on the following query:

SELECT                                  P_CODE, P_QOH*P_PRICE

FROM                                    PRODUCT

WHERE                                 P_QOH*P_PRICE > (SELECT AVG(P_QOH*P_PRICE) FROM PRODUCT);

Should you create an index? If so, what would the index column(s) be, and why should you create the index?

 

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