Relational database background, basic SQL retrieval

1. SQL212 SQL Programming Based on SQL Clearly Explained by Jan Harrington Module 1 – Relational Database Background, Basic Single Table Retrieval Operations Bookstore SQL212 Module 1

2. SQL212 Contact Information Bookstore2 SQL212 Module 2 P.O. Box 6142 Laguna Niguel, CA 92607 949-489-1472 http://www.d2associates.com [email_address] Copyright 2001-2009. All rights reserved.

5. SQL212 SQL Programming Part 1 – Relational Database Background Bookstore2 SQL212 Module 2

10. Bookstore SQL212 Module 1 Relational Database Table

12. Bookstore SQL212 Module 1 Relational Database with constraints

13. Database Management Systems Bookstore SQL212 Module 1 Positioning Chart VLDB Enterprise Workgroup Single user Spreadsheet # Users Cost

14. System Architecture Bookstore SQL212 Module 1 Access MDB File Server Architecture Access

15. System Architecture Bookstore SQL212 Module 1 Oracle DB Visual Basic App Client/Server Architecture Access  SQL 

16. System Architecture Bookstore SQL212 Module 1 Oracle DB Browser Web Architecture Web Server  SQL 

24. SQL Statement Processing Bookstore SQL212 Module 1 Parse Validate Optimize Access Plan Execute

25. SQL212 SQL Programming Part 2 – Basic SQL Retrieval Bookstore2 SQL212 Module 2

28. SELECT Bookstore SQL212 Module 1 Basic Syntax ( Projection ): Select <column-list> or <*> From <table-list>

29. SELECT Bookstore SQL212 Module 1 Basic Example ( Projection ): select customer_last_name, customer_street from customers

30. MS Access SQL Query Bookstore SQL212 Module 1

31. Bookstore SQL212 Module 1

32. Query with Results Bookstore SQL212 Module 1

33. SELECT with Where Clause Bookstore SQL212 Module 1 Example ( Restriction plus Projection ): Select <column-list> From <table-list> Where <selection-criteria>;

34. SELECT with Where Bookstore SQL212 Module 1 Basic Example ( Restriction plus Projection ): select customer_last_name, customer_street from customers where customer_last_name = ‘Jones’

35. Select with Where Bookstore SQL212 Module 1

37. Complex Predicates Bookstore SQL212 Module 1 Follow normal boolean logic Select customer_last_name, customer_street From customers Where (customer_last_name = ‘Jones’ or customer_last_name = ‘Smith’)and customer_state=‘NY’

38. Select with Complex Where Bookstore SQL212 Module 1

39. Complex Where Result Bookstore SQL212 Module 1

42. IN Bookstore SQL212 Module 1 Select * From customers Where customer_last_name in (‘Rizzo’, ‘Jones’, ‘Garcia’) The list in parentheses can be replaced by a subquery. We will study this later.

43. SQL Where Clause with IN Bookstore SQL212 Module 1

44. IS NULL Bookstore SQL212 Module 1 Select * From customers Where customer_street IS NULL SQL uses three valued logic. Must use IS NULL to test for unknowns. A null is NOT the same as blank or empty.

46. BETWEEN Bookstore SQL212 Module 1 Select * From orders Where order_date BETWEEN ‘ 1-jan-99’ and ‘31-dec-99’ Note: date formats vary from product to product.

47. Where with Between Bookstore SQL212 Module 1

48. Removing Duplicates Bookstore SQL212 Module 1 Select DISTINCT customer_city From customers List once each city in which there are customers Removes duplicate rows from result set

49. Removing Duplicates Bookstore SQL212 Module 1

50. Sorting – ORDER BY Bookstore SQL212 Module 1 DESC will sort in descending order Basic syntax : Select <column list> From <table list> Where <selection criteria> Order by <column list> [DESC]

51. Sorting – ORDER BY Bookstore SQL212 Module 1 Select * From customers Order by customer_state, customer_city Example: List all records sorted by state, city

52. Sorting Results with Order By Bookstore SQL212 Module 1

54. Notes Bookstore SQL212 Module 1

55. Notes Bookstore SQL212 Module 1

56. Notes Bookstore SQL212 Module 1