Joins, Subqueries, Unions, Calculations and Grouping

1. SQL212 SQL Programming Workshop 2 – Joins, Subqueries, Unions, Calculations and Grouping Bookstore2 SQL212 Module 2

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.

3. SQL212 SQL Programming Part 1 – Joins, Subqueries Bookstore2 SQL212 Module 2

4. Bookstore2 SQL212 Module 2 Relational Database with constraints (from text)

8. Inner Join Bookstore2 SQL212 Module 2 Older Syntax: Select <column-list> From <tablelist> Where <predicate> Still very commonly used

10. Inner Join Bookstore2 SQL212 Module 2 Example using older syntax: SELECT customer_first_name, customer_street, order_numb, order_date from customers, orders Where customers.customer_numb = orders.customer_numb

11. Inner Join with Result Bookstore2 SQL212 Module 2

12. Inner Join (New Syntax) Bookstore2 SQL212 Module 2 Basic SQL 92 Syntax: Select <column-list> From <table1> Inner join <table2> On <join condition>

13. Inner Join Bookstore2 SQL212 Module 2 Basic Example: SELECT customer_first_name, customer_street, order_numb, order_date from customers inner join orders on customers.customer_numb = orders.customer_numb

14. Inner Join with Result Bookstore2 SQL212 Module 2

16. Bookstore2 SQL212 Module 2 Inner Join Result in MS Access

20. Bookstore2 SQL212 Module 2 Cross Join Result Set in MS Access

22. Natural Join Bookstore2 SQL212 Module 2

25. Multi-table Join with Results Bookstore2 SQL212 Module 2

26. Bookstore2 SQL212 Module 2 MS Access Multi-table Join Result Set

31. Self Joins Bookstore2 SQL212 Module 2 SELECT e.*, m.name FROM employees AS e, employees AS m WHERE e.managerid = m.employeeid;

32. Bookstore2 SQL212 Module 2

34. Left Outer Join Bookstore2 SQL212 Module 2 Basic SQL 92 Syntax: Select <column-list> From <table1> Left [outer] join <table2> On <join condition>

36. Left-Join Bookstore2 SQL212 Module 2 Basic Example: SELECT customer_first_name, customer_street, order_numb, order_date from customers as c left join orders as o on c.customer_numb = o.customer_numb

37. Bookstore2 SQL212 Module 2

38. Left Join with Results Bookstore2 SQL212 Module 2

39. SQL200 SQL Programming Part 2– Subqueries, Unions Bookstore2 SQL212 Module 2

42. Uncorrelated Subquery Bookstore2 SQL212 Module 2 select isbn, quantity from orderlines ol where ol.order_numb in (select o.order_numb from orders o where order_date between ‘1-JAN-99’ and ’31-DEC-99’)

43. Uncorrelated Subquery with Results Bookstore2 SQL212 Module 2

45. Negative Subquery Bookstore2 SQL212 Module 2 select isbn, quantity from orderlines ol where ol.order_numb not in (select o.order_numb from orders o where order_date between ‘1-JAN-99’ and 31-DEC-99’)

46. Negative Subquery with Results Bookstore2 SQL212 Module 2

48. Correlated subquery with Exists Bookstore2 SQL212 Module 2 SELECT isbn, quantity FROM orderlines AS ol WHERE exists (select * from orders o where ol.order_numb = o.order_numb and o.order_date between ‘1-JAN-99’ and ‘31-DEC-99’); This type of query covered in intermediate SQL class

50. Unions Bookstore2 SQL212 Module 2 Select <column-list> from <table1> Union [ALL] Select <same-columns> from <table2>

52. Unions Bookstore2 SQL212 Module 2

53. Union Results Bookstore2 SQL212 Module 2

54. SQL200 SQL Programming Part 3 – Calculations, Aggregates Bookstore2 SQL212 Module 2

56. Calculated field in the Result Bookstore2 SQL212 Module 2

57. Bookstore2 SQL212 Module 2

60. Concatenation Bookstore2 SQL212 Module 2 select customer_first_name || ‘ ‘ || trim(customer_last_name) as Name from customers

61. Bookstore2 SQL212 Module 2

64. Aggregate Functions Bookstore2 SQL212 Module 2 Basic syntax: Select <function>(<column>) From <table> Group by <column-list> Having <predicate> Group by all columns to left of one(s) you want to aggregate

65. Aggregate Functions Bookstore2 SQL212 Module 2 SELECT orderlines.order_numb, Count(*) AS “Number of Order Lines” , Sum(orderlines.quantity) AS SumOfquantity, Sum(quantity * cost_each) AS extension FROM orderlines GROUP BY orderlines.order_numb having count(*) > 1

66. Bookstore2 SQL212 Module 2

69. Exercise Result Bookstore2 SQL212 Module 2 [end module]

70. Notes Bookstore2 SQL212 Module 2

71. Notes Bookstore2 SQL212 Module 2

72. Notes Bookstore2 SQL212 Module 2