AIN102 Microsoft Access Queries Module 2. covers date and string functions, joins, subqueries, action queries, unions.

1. AIN102 Access Query Design Module 2 Admissions AIN102 Module 2 P.O. Box 6142 Laguna Niguel, CA 92607 949-489-1472 http://www.d2associates.com

2. AIN102 Contact Information Admissions AIN102 Module 2 P.O. Box 6142 Laguna Niguel, CA 92607 949-489-1472 http://www.d2associates.com [email_address] Copyright 2001-20011 All rights reserved.

7. String Manipulation Admissions AIN102 Module 2

8. String Manipulation Admissions AIN102 Module 2

9. String Example Admissions AIN102 Module 2

12. DateDiff results Admissions AIN102 Module 2 Note: Access has many date functions with many options.

13. Ex: Date Function – Month() Admissions AIN102 Module 2

14. Ex: Date Function – Month() Admissions AIN102 Module 2

15. Result of Month Function Admissions AIN102 Module 2

18. Summary Functions in Access Admissions AIN102 Module 2 Click the sum symbol Adds a total row

19. Summary Functions - Syntax Admissions AIN102 Module 2 Basic syntax: SELECT function(column) FROM table WHERE filter-condition GROUP BY column-list HAVING group-filter Group by all columns to left of one(s) you to want aggregate

20. Simple Column Summaries Admissions AIN102 Module 2 This query counts patient admissions In the year 2001

21. Simple Column Summaries Admissions AIN102 Module 2

22. Simple Record Count Admissions AIN102 Module 2

25. GROUP BY in Query Designer Admissions AIN102 Module 2

26. GROUP BY Problem Admissions AIN102 Module 2 Not an aggregate or group You will see this error a lot. Not to worry. It happens to everyone!

27. Group By Results Admissions AIN102 Module 2

30. HAVING Admissions AIN102 Module 2

31. HAVING Results Admissions AIN102 Module 2

32. AIN102 Access Query Design Part 2 – Joins, Subqueries Admissions AIN102 Module 2

33. Admissions AIN102 Module 2 Database Design Diagram of the database for reference in joins

36. Inner Join Syntax Admissions AIN102 Module 2 Basic SQL 92 Syntax: SELECT column-list FROM table1 [ AS alias ] INNER JOIN table2 [ AS alias ] ON join-condition

38. Inner Join Basic SQL Example Admissions AIN102 Module 2 Basic Example: Add patient names to admissions data Two join tables Join condition

39. Inner Join Query Design Admissions AIN102 Module 2

40. Inner Join Results Admissions AIN102 Module 2

43. 3 Table Query Results Admissions AIN102 Module 2

46. Left Outer Join Admissions AIN102 Module 2 Basic SQL 92 Syntax: SELECT column-list FROM table1 LEFT JOIN table2 ON join-condition

47. Left Outer Join (Right click on relationship to edit) Admissions AIN102 Module 2

49. Left Outer Join Results Admissions AIN102 Module 2

53. Multi-valued Subquery Result Admissions AIN102 Module 2 No one was ever admitted with these diagnoses.

54. Single-valued Subquery Admissions AIN102 Module 2 Subquery that returns a single value Find all admissions with stays greater than the average stay

55. Single-valued Subquery Admissions AIN102 Module 2 Subquery that returns a single value

56. Single-valued Subquery Result Admissions AIN102 Module 2

58. Queries using Queries Admissions AIN102 Module 2 Filter the prior query ( a little on the complicated side) for the year 2001

59. Queries using Queries Result Admissions AIN102 Module 2

60. AIN102 Access Query Design Part 3 – Unions, Action Queries Admissions AIN102 Module 2 D. H. D’Urso and Associates 949-489-1472 http://www.dhdursoassociates.com

63. Admissions Database Admissions AIN102 Module 2 Diagram of the database for reference in part 3

64. Data Modification Queries Admissions AIN102 Module 2 SQL Action Query INSERT Append UPDATE Update DELETE Delete SELECT…INTO Maketable

67. Select Into…Maketable Admissions AIN102 Module 2 New table Existing table Make Table

68. Archived Labor History Admissions AIN102 Module 2

70. Delete Admissions AIN102 Module 2 Example: Delete all archived records newer than 12/31/2001

71. Delete SQL Admissions AIN102 Module 2 Example: Delete all archived admissions_history newer than 12/31/01

72. Archive after DELETE Admissions AIN102 Module 2

75. Single Row Insert Admissions AIN102 Module 2 Basic Syntax: Insert [ into ] table-name Values ( value-list )

76. Single Row Insert Admissions AIN102 Module 2 Basic Example: INSERT into xLU_BuildStyle values(6, “Thick”) Not really used this way in MS Access. Typical MS Access use would be Insert…Select as shown in following slides.

77. Append Query (Multi-row insert) Admissions AIN102 Module 2

78. Multi-row Insert SQL Admissions AIN102 Module 2 Basic Syntax: INSERT [ INTO ] table-name SELECT select-statement

79. Multi-row Insert (Append) Admissions AIN102 Module 2 Add back archived admissions_history newer than 12/31/01

80. Append (Insert) Results Admissions AIN102 Module 2

82. Update in Query Designer Admissions AIN102 Module 2 New value

84. Update Results Admissions AIN102 Module 2 New values Remember: you have to look at the affected table. No “result” is displayed.

86. Union Syntax Admissions AIN102 Module 2 SELECT column-list FROM table1 UNION [ ALL ] SELECT same-columns FROM table2

87. Union Example Admissions AIN102 Module 2

88. Union Result Admissions AIN102 Module 2

90. End Session 2 Admissions AIN102 Module 2 End of Class!

91. Notes Admissions AIN102 Module 2

92. Notes Admissions AIN102 Module 2