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23Copyright © 2009, Oracle. All rights reserved.
Oracle Business Intelligence Answers: Advanced Features
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Objectives
After completing this lesson, you should be able to:• Combine request criteria by using set operations• Execute direct database requests• Edit logical SQL that is generated by a request• Creating a link to a saved request• Create an Excel Web Query file
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Advanced Features
• Combining request criteria by using set operations• Executing direct database requests• Editing logical SQL generated by a request• Creating a link to a saved request• Creating an Excel Web Query file
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Combining Request Criteria by Using Set Operations
Combine criteria from one or more subject areas:• Subject areas may be organized with similar information
depending on business needs.Combine results from two or more requests into a single request:• Example: Combine results from a subject area
containing all active customers with results from a subject area containing customers who have ordered one or more products.
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Set Operators
Set operators and their effects on results:
Returns rows from first request that are not in other requestsMinus
Returns rows that are common to all requestsIntersect
Returns all rows from all requestsUnion All
Returns nonduplicate rows from all requestsUnion
Effect on ResultsSet Operator
Request 1 Request 2
Row AAA Row BBB
Row BBB Row CCC
Request 1 Request 2
Row AAA Row BBB
Row BBB Row CCC
Request 1 Request 2
Row AAA Row BBB
Row BBB Row CCC
Request 1 Request 2
Row AAA Row BBB
Row BBB Row CCC
Union Union All
Intersect Minus
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Combining Results of Multiple Requests
1. Build a request.2. Combine with a similar request.3. Construct the combined request.4. Apply a set operator.5. Check the results.
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1. Build a request.
Build a request with desired columns and filters.
Request returns customers with dollars between 5000 and 15000.
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2. Combine with a similar request.
Click the “Combine with Similar Request” button and select a subject area.
Select the same subject area or a
different subject area.
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3. Construct the combined request.
Add columns and filters to the new request.
The number of columns and
data types must be consistent
across all criteria.
New request returns customers with dollars between
10000 and 20000.
Click Edit to add additional criteria.
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4. Apply a set operator.
Click the Set button and select the set operator.
Combined request returns the union of
customers with dollars between 5000
and 20000.
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5. Check the results.
Results of two or more requests are combined into a single request.
The table displays the union of all customers with dollars between 5000 and 20000.
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Direct Database Request Privileges
• Users with appropriate privileges can create and issue direct database requests to physical back-end data sources.
– Results can be displayed and manipulated in Oracle Business Intelligence Answers and incorporated into Interactive Dashboards.
• Required privileges include:– Edit Direct Database Requests– Execute Direct Database Requests
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Changing Direct Database Request Privileges
Changes are made in Oracle BI Presentation Services Administration.
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Creating and Executing a Direct Database Request
1. Create a direct request.2. Construct a direct database request.3. Check the results.
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1. Create a direct request.
Click Create Direct Request on the Answers start page.
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2. Construct a direct database request.Follow the on-screen instructions to create the request.
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3. Check the results.
Results are displayed in the Answers workspace.
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Editing Logical SQL Generated by a RequestFor advanced users and developers with specific privileges: 1
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Editing Logical SQL Generated by a Request
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Creating a Link to a Saved Request
For users with permission to access the Advanced tab:1
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Creating an Excel Web Query File
For users with permission to access the Advanced tab:1
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Viewing an Excel Web Query File
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Summary
In this lesson, you should have learned how to:• Combine request criteria by using set operations• Execute direct database requests• Edit logical SQL that is generated by a request• Create an Excel Web Query file
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Practice 23: Overview
This practice covers the following topics:• Combining requests by using set operations• Executing direct database requests