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QString str = QString("select * from stu_base where SUBSTRING(NUM,-5)= '%1'").arg(scanCode_NUM);
QSqlQuery query;
query.exec(str);
query.first();
QString Name= query.value("NAME").toString();
QString num = query.value("NUM").toString();
query.exec("SET NAMES 'Latin1'");
QString insert = QString("insert into res_paper_count(NAME,NUM,receive) values(N'%1','%2',1)").arg(Name).arg(num);
query.exec(insert);
QMessageBox::information(nullptr,"提示","添加成功");