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Advanced Query Analysis

Advanced Query Analysis. IS240 – DBMS Supplement to Chapter 5 M. E. Kabay, PhD, CISSP-ISSMP Assoc. Prof. Information Assurance Division of Business & Management, Norwich University mailto:mkabay@norwich.edu V: 802.479.7937. Topics.

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Advanced Query Analysis

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  1. Advanced Query Analysis IS240 – DBMS Supplement to Chapter 5 M. E. Kabay, PhD, CISSP-ISSMP Assoc. Prof. Information AssuranceDivision of Business & Management, Norwich University mailto:mkabay@norwich.edu V: 802.479.7937

  2. Topics • Sally’s Pet Store: Problem 5-01 • Start with Calculation of Order Values • Save the Query • Document the Query • Query is Saved • Then Use the Stored Query in the Complete Query • Use TOP operator to Restrict Output

  3. Sally’s Pet Store: Problem 5-01 • Which supplier has the highest average percentage of shipping cost per value of merchandise order? • First, compute the value of each order • Store the query as Query05_01a • Then use the synthetic table of values from Query05_01a to prepare a new synthetic table • Combines the supplier info with the order info • Allows computation of percentage • Sort data

  4. Start with Calculation of Order Values

  5. Save the Query

  6. Document the Query

  7. Query is Saved

  8. Then Use the Stored Query in the Complete Query

  9. Use TOP operator to Restrict Output

  10. DISCUSSION

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