debitorcreditcard
请帮忙解释一下所列的SQL语句
AmountCredit=isnull(sum(case when debitorcredit=1 then amount else 0 end),0)取AmountCredit的值为amount（其中case when为分类区别语句，即如果debitorecredit为1，...
商务英语函电的缩写名词列表
商务英语函电的缩写名词如下：asap=as soon as possible 尽快L/C=letter of credit 信用证GSP=generalized system of preferences,也称FORM A ...