Release 10.1A: OpenEdge Development:
Progress Dynamics Advanced Development

Customizing and managing queries

OpenEdge Development: Progress Dynamics Basic Development has a chapter on business logic that reviews how SmartDataObjects function and how to use the built-in entry points for various kinds of basic validation logic. Other chapters discuss more advanced forms of business logic. This section reviews the following useful functions and properties that you can use to customize the WHERE clause and other aspects of the queries in your application:

Modifying the WHERE clause at run time
Using addQueryWhere and assignQuerySelection
Refreshing the database query
Additional query methods
Other query properties