JasperReport，如何利用sum计算某一列的值，重点是只计算当前页，其他页的不计算！
求大神指教，谢谢！
参考 jasper reports - How to sum all values in a column in Jaspersoft iReport Designer? - Stack Overflow I have below similar report in Jaspersoft iReport Designer, but not able to figure out how to sum all values present in vertical column "Doctor Payment" to get a total of "1601"? Length of this col... https://stackoverflow.com/questions/13550514/how-to-sum-all-values-in-a-column-in-jaspersoft-ireport-designer
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