SQL Server 2005 Books Online (November 2008)
How to: Add, Modify or Delete an Expression [Model Designer]
You can add expressions to folders and entities within Model Designer.
To add an expression
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In the Tree view, select the model item.
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On the Reporting Model menu, click New Expression.
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In the Define Formula dialog box, build your expression, and then click OK.
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In the Detail view, right-click the new expression and then click Rename.
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Type a name for your expression.
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In the Properties area, assign the properties that you want to apply to this field.
To modify an expression
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In the Detail view, click the expression that you want to modify.
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In the Properties area, click in the Expression box, and then click the Expression button.
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Modify the expression and then click OK.
To delete an expression
See Also