Microsoft Office Access 2013: Part 01. Lesson 04 - Creating Advanced Queries

Transcription

1 Microsoft Office Access 2013: Part 01 Lesson 04 - Creating Advanced Queries

2 Slide 1 Lesson 04: Creating Advanced Queries Create Parameter Queries Create Action Queries Create Unmatched and Duplicate Queries Summarize Data

3 Slide 2 Topic A: Create Parameter Queries Create Parameter Queries Matching a Parameter Query Using the Ampersand Operator A Parameter Query Displays a Prompt

4 Slide 3 Create Parameter Queries A Parameter Query Displays a Prompt Allows user to supply additional criteria for the query Access can display up to 50 characters in the prompt message. Not allowed: Periods Exclamation marks Square Brackets Prompt Message should not match a field name

5 Slide 4 Matching a Parameter Query

6 Slide 5 Using the Ampersand Operator

7 Slide 6 A Parameter Query Displays a Prompt

8 Slide 7 Topic B: Create Action Queries Action Queries Action Query Update Expression

9 Slide 8 Action Queries Simplest form of a query is called a select query Action queries perform an action on matching records Move Append Update Delete Action queries cannot be undone Always backup You can preview results in Design View

10 Slide 9 Action Query Update Expression [RetailPrice]*[Adjust project pack prices by what factor] Take the current RetailPrice and multiply it by the factor the user enters

11 Slide 10 Topic C: Create Unmatched and Duplicate Queries Find Unmatched and Find Duplicate Queries

12 Slide 11 Find Unmatched and Find Duplicate Queries Find Unmatched Query Finds records in table or query that have no related records in another table or query Assist in finding unused records Assist in finding records that can be deleted or archived Find Duplicate Query Finds records that have duplicate Field Values within a table or query Find records that have been inadvertently duplicated

13 Slide 12 Topic D: Summarize Data Crosstab Queries & Display Details Analyzing Country of Origin

14 Slide 13 Crosstab Queries & Display Details Crosstab Queries Display data in a way that provides insights not apparent through a normal query Displays data grouped by category to summarize results or patterns Display details Row headings Column headings Cell Intersection

15 Slide 14 Analyzing Country of Origin Country 1 Country 2 Country 3 Supplier 1 How many products Supplier 1 obtains from Country 1 How many products Supplier 1 obtains from Country 2 How many products Supplier 1 obtains from Country 3 Supplier 2 How many products Supplier 2 obtains from Country 1 How many products Supplier 2 obtains from Country 2 How many products Supplier 2 obtains from Country 3 Supplier 3 How many products Supplier 3 obtains from Country 1 How many products Supplier 3 obtains from Country 2 How many products Supplier 3 obtains from Country 3

16 Slide 15 Reflective Questions 1. What is the primary benefit of a crosstab query? 2. When would you use an action query?

17 Slide 16 Lesson 04 Review: Creating Advanced Queries Create Parameter Queries Create Action Queries Create Unmatched and Duplicate Queries Summarize Data

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19 Review Questions: 1. When you create a query that prompts for a user to enter in what they're looking for, what is this called? A. Custom query B. Parameter query C. Crosstab query D. None of the above 2. True or False: Wildcards cannot be used in a parameter query. A. True B. False 3. What is the "&" operator used for? A. To prompt a user for input B. To join two character strings C. To create a query join D. None of the above 4. Where is a parameter query created? A. In the Query Design view B. In the Query Wizard C. In a crosstab query D. All of the above 5. True or False: The simplest form of a query is called the select query. A. True B. False

20 Answer Key: 1. B A parameter query is when you use a query that will prompt the user for specific criteria. In example, the query might ask the user to enter a Supplier ID. 2. B False. A wildcard is a special character that substitutes for either a single character or a string of characters. You can use an asterisk (*) or other wildcards available. 3. B You can use the "&" operator to join two character strings. The ampersand (&) can be used in combination with an asterisk wildcard to link data to criteria that a user specifies. 4. A Parameter queries are created in Query Design view. Instead of specifying criteria, you specify the question or the prompt within square brackets. 5. A True. The simplest form of a query is called a select query.