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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 Different Join Types

In Crystal Reports, the Link tab of the Report Wizard (and Database Expert) provides a visual representation of the relationship between multiple database objects. Defining the appropriate join strategy for any given report should be reflective of the data within the database objects and of how the report needs to read and display that data. Join type settings enable you to control more precisely the query results based on your unique requirements. The following is a list of the most common types of joins and their associated descriptions:

  • Inner: The resultset includes all the records in which the linked field value in both tables is an exact match. The Inner join is the standard type of join for most reports, ...

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