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Special Edition Using® Crystal Reports® 10 by Roger Sanborn, Steve Lucas, Kathryn Hunt, Joe Estes, Michael Voloshko, James Edkins, Bob Coates, Naisan Geula, Ryan Marples, Neil FitzGerald

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Understanding the Value of Parameters

By using parameter fields that enable business users to select from a list of one or more parameter field values (such as district, country, or account type), you can make reports more valuable for the business users while limiting the volume of data that the report retrieves. For example, a sales report is likely to be more valuable for a sales professional if it allows him to select his specific territory or district, while the report runs more efficiently because it retrieves only the desired data and not an unnecessarily large data set. Parameter fields can prompt users for a variety of information that can be used in a number of flexible ways within reports—good examples include controlling the sort ...

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