//准备执行的sql语句，此为带参的sql语句query.prepare("update employee set Name=:Name, Gender=:Gender,Height=:Height,"" Birthday=:Birthday, Mobile=:Mobile, Province=:Province,"" City=:City, Department=:Department, Education=:Education,"" Salary=:Salary, Memo=:Memo, Photo=:Photo "" where EmpNo = :ID");//设置sql语句中参数的值query.bindValue(":Name",recData.value("Name"));query.bindValue(":Gender",recData.value("Gender"));query.bindValue(":Height",recData.value("Height"));query.bindValue(":Birthday",recData.value("Birthday"));query.bindValue(":Mobile",recData.value("Mobile"));query.bindValue(":Province",recData.value("Province"));query.bindValue(":City",recData.value("City"));query.bindValue(":Department",recData.value("Department"));query.bindValue(":Education",recData.value("Education"));query.bindValue(":Salary",recData.value("Salary"));query.bindValue(":Memo",recData.value("Memo"));query.bindValue(":Photo",recData.value("Photo"));query.bindValue(":ID",empNo);//执行对应绑定值的sql语句if (!query.exec())QMessageBox::critical(this, "错误", "记录更新错误\n"+query.lastError().text(),QMessageBox::Ok,QMessageBox::NoButton);

删除：

QSqlQuery query;query.prepare("delete  from employee where EmpNo = :ID");query.bindValue(":ID",empNo);if (!query.exec())QMessageBox::critical(this, "错误", "删除记录出现错误\n"+query.lastError().text(),QMessageBox::Ok,QMessageBox::NoButton);

修改：

QSqlQuery qryUpdate; //临时 QSqlQueryqryUpdate.prepare("UPDATE employee SET Salary=:Salary WHERE EmpNo = :ID");qryUpdate.bindValue(":ID",empID);qryUpdate.bindValue(":Salary",salary); //设置SQL语句参数qryUpdate.exec(); //执行update

插入：

query.prepare("INSERT INTO employee (EmpNo,Name,Gender,Height,Birthday,Mobile,Province,"" City,Department,Education,Salary,Memo,Photo) "" VALUES(:EmpNo,:Name, :Gender,:Height,:Birthday,:Mobile,:Province,"" :City,:Department,:Education,:Salary,:Memo,:Photo)");query.bindValue(":EmpNo",recData.value("EmpNo"));query.bindValue(":Name",recData.value("Name"));query.bindValue(":Gender",recData.value("Gender"));query.bindValue(":Height",recData.value("Height"));query.bindValue(":Birthday",recData.value("Birthday"));query.bindValue(":Mobile",recData.value("Mobile"));query.bindValue(":Province",recData.value("Province"));query.bindValue(":City",recData.value("City"));query.bindValue(":Department",recData.value("Department"));query.bindValue(":Education",recData.value("Education"));query.bindValue(":Salary",recData.value("Salary"));query.bindValue(":Memo",recData.value("Memo"));query.bindValue(":Photo",recData.value("Photo"));if (!query.exec())QMessageBox::critical(this, "错误", "插入记录错误\n"+query.lastError().text(),QMessageBox::Ok,QMessageBox::NoButton);