1. CSIS 115 Database Design and Applications for Business
Dr. Meg Fryling
“Dr. Meg”
Fall 2012
@SienaDrMeg
#csis115

2. Agenda Questions? Assignments Review Chapter 2 - SQL Basics
“Fun” with iClicker
Chapter 2 - SQL Basics
Continued

3. Homework Project Part I Finish Chapter 3 (100-105 only)
Was due at the start of class today
Finish Chapter 3 ( only)
Finish Chapter 5
Reminder: Quiz 1 will be Mon, 9/24
Closed book but you may have a 8.5x11 handwritten “cheat sheet”. Must use your own and turn in with quiz.

4. Let’s do some review from last week
Get those clickers ready!

5. The industry standard supported by all major DBMS that allows data to be selected, added, updated, and deleted from a relational database is…
A) Sequential Query Language (SQL) B) Structured Question Language (SQL) C) Structured Query Language (SQL) D) Relational Question Language (RQL) E) Relational Query Language (RQL)

6. Which elements are required in an SQL statement
SELECT
FROM
WHERE
SELECT and FROM
SELECT, FROM, and WHERE
Answer: D

7. In addition to being a data sublanguage, SQL is also a programming language, like Java or C#
A) True
B) False
Answer: FALSE
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

8. The SQL keyword SELECT is used to specify the __________ to be listed in the query results.
A) Columns
B) Rows
C) Records
D) Tuples
E) None of the above
Answer: A
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

9. A column is also referred to as a field or an attribute
A) True
B) False
Answer: A
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

10. Add ORDER BY
Update the query below so it sorts the records by OrderNumber and then by Price SELECT * FROM ORDER_ITEM ORDER BY OrderNumber;
Last time we ended with this query

11. Sorting the Results – ORDER BY
SELECT *
FROM ORDER_ITEM
ORDER BY OrderNumber, Price;
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

12. Which order are the results sorting in? Ascending Descending
Sort Order Default
Which order are the results sorting in?
Ascending
Descending
Answer: A

13. Sort Order: Ascending and Descending
SELECT *
FROM ORDER_ITEM
ORDER BY Price DESC, OrderNumber ASC;
NOTE: The default sort order is ASC – does not have to be specified.
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

14. SQL for Data Retrieval: Logical Operators
Multiple matching criteria (conditions) may be specified using…
AND
Representing an intersection of the data sets OR
Representing a union of the data sets

15. Write a Query Selects all columns from the SKU_DATA table
Only include rows for the Water Sports department where the buyer is Nancy Meyers

16. WHERE Clause Options - AND
SELECT *
FROM SKU_DATA
WHERE Department = 'Water Sports'
AND Buyer = 'Nancy Meyers';
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

17. Write a Query Selects all columns from the SKU_DATA table
Only include rows that are associated with the Camping or the Climbing department

18. WHERE Clause Options - OR
SELECT *
FROM SKU_DATA
WHERE Department = 'Camping'
OR Department = 'Climbing';
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

19. How many rows will this query return?
SELECT *
FROM SKU_DATA
WHERE Department = 'Water Sports'
AND Buyer = 'Nancy Meyers';
Answer: 2
Just look at data in SKU_DATA table first to answer this question?

20. How many rows will this query return?
SELECT *
FROM SKU_DATA
WHERE Department = 'Camping'
OR Department = 'Climbing';
Answer: 4
Just look at data in SKU_DATA table first to answer this question?

21. Write a Query That will return all columns from the ORDER_ITEM table
Only include records with an extended price greater than or equal to 100 and less than or equal to 200
Only include records for SKU or SKU
Hint: You will need to use both AND and OR in the WHERE clause

22. Using both OR and AND SELECT * FROM ORDER_ITEM
WHERE ExtendedPrice >= 100
AND ExtendedPrice <= 200
AND SKU =
OR SKU = ;
Does this return what you would expect?

23. Remember operator precedence?
3 + 4 × 5 = 23 vs
(3 + 4) × 5 = 35
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

24. Excel OR() and AND() Functions
Recall CSIS114 BI-OLAP Lab
=IF(OR(A3<62,C3="snow",C3="rain",B3>70%,AND(D3="Monday",OR(E4="Average",E4="Bad"))),"no","yes")

25. Using both OR and AND SELECT * FROM ORDER_ITEM
WHERE ExtendedPrice >= 100
AND ExtendedPrice <= 200
AND SKU =
OR SKU = ;
How do you think you can “fix” this query?

26. Using both OR and AND
SELECT * FROM ORDER_ITEM WHERE ExtendedPrice >= 100 AND ExtendedPrice <= 200 AND (SKU = OR SKU = );

27. Gotcha
When using both OR & AND clauses be sure to use () to clarify what criteria belongs together
If not you may get unexpected results!
KROENKE AND AUER - DATABASE PROCESSING, 11th Edition © 2010 Pearson Prentice Hall

28. SQL for Data Retrieval: Inclusion/Exclusion
SQL provides a IN/NOT IN statements that allows a user to specify all valid values on one line! SWEET
SELECT FieldName
FROM TABLE
WHERE FieldName IN (X,Y,Z);
SELECT FieldName
FROM TABLE
WHERE FieldName = X
OR FieldName = Y
OR FieldName = Z;
You can use this instead of _______________

29. SQL for Data Retrieval: The Logical NOT Operator
Any criteria statement may be preceded by a NOT operator which is to say that all information will be shown except that information matching the specified criteria
SELECT FieldName
FROM TABLE
WHERE FieldName NOT IN (X, Y, Z);

30. WHERE Clause Options - IN
Update query below so it uses IN clause to return same results
SELECT *
FROM ORDER_ITEM
WHERE ExtendedPrice >= 100
AND ExtendedPrice <= 200
AND (SKU =
OR SKU = );

31. WHERE Clause Options - IN
SELECT *
FROM ORDER_ITEM
WHERE ExtendedPrice >= 100
AND ExtendedPrice <= 200
AND SKU IN(101100, );
Wow, that sure looks cleaner!
What if we wanted to return all SKU records that were NOT or but had an extended price between 100 and 200?

32. WHERE Clause Options – NOT IN
SELECT *
FROM ORDER_ITEM
WHERE ExtendedPrice >= 100
AND ExtendedPrice <= 200
AND SKU NOT IN(101100, );

33. SQL for Data Retrieval: Finding Data in a Range of Values
SQL provides a BETWEEN statement that allows a user to specify a minimum and maximum value on one line! SUPER SWEET
Note: Will include the minimum and maximum value in the results
SELECT FieldName
FROM TABLE
WHERE FieldName BETWEEN X AND Y;

34. SQL for Data Retrieval: Finding Data in a Range of Values
Update query below so it uses BETWEEN clause to return same results SELECT * FROM ORDER_ITEM WHERE ExtendedPrice >= 100 AND ExtendedPrice <= 200 AND SKU IN(101100, );

35. WHERE Clause Options – BETWEEN
SELECT *
FROM ORDER_ITEM
WHERE ExtendedPrice BETWEEN 100 AND 200
AND SKU IN(101100, );
Huh, that’s awesome!

36. In-Class Activity Part III
SQL Basics
In-Class Activity Part III