在Crystal中，您可以创建一个公式， code> ToNumber 函数。编写该字段可能包含非数字数据的可能性可能是个好主意，例如：

Within Crystal, you can do it by creating a formula that uses the ToNumber function. It might be a good idea to code for the possibility that the field might include non-numeric data - like so:

If NumericText ({field}) then ToNumber ({field}) else 0

以转换报表中使用的查询中的字段的数据类型。

Alternatively, you might find it easier to convert the field's datatype within the query used in the report.