How to create a computed column
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Figure 3-3  
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Figure 3-4  
The list shows only the fields in use in the report design. It does not show all the fields in the data set. To use a field that is not in the list, you must add the field to the report design.
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Figure 3-5  
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A computed column containing data of numeric or date-and-time type needs to be formatted. For example, the Total column in the example above should be formatted as currency.

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