这个问题并不新鲜,但我一整天都陷入困境。有人张贴前:Crystal Reports: Error on Sum in Formula Field。我有报告说,计算公式推通话收入占总收入:Error in formula revenue: A number,current amount, date, time, or date-time is required here
如何解决这个任何意见将:Crystal report数据源为空时的公式错误
if isnull({table.totalAmount}) and isnull({table.unpaidAmount})then 0 else
{table.totalAmount}-{table.unpaidAmount}
,如果数据源不是空的,但如果数据源空,抛出异常工作太好了!