Qt数据库之QSqlQueryModel

Alphapeople2023-11-14 19:22

创建数据模型：

cpp 复制代码

QSqlQueryModel  *qryModel; //数据模型
qryModel=new QSqlQueryModel(this);
    qryModel->setQuery("SELECT empNo, Name, Gender, Height, Birthday, Mobile, Province, City, Department, "
                       " Education, Salary FROM employee ORDER BY empNo");
    if (qryModel->lastError().isValid())
    {
        QMessageBox::critical(this, "错误", "数据表查询错误,错误信息\n"+qryModel->lastError().text(),
                                 QMessageBox::Ok,QMessageBox::NoButton);

设置字段：

cpp 复制代码

qryModel->setHeaderData(0,Qt::Horizontal,"工号");
    qryModel->setHeaderData(1,Qt::Horizontal,"姓名");
    qryModel->setHeaderData(2,Qt::Horizontal,"性别");
    qryModel->setHeaderData(3,Qt::Horizontal,"身高");
    qryModel->setHeaderData(4,Qt::Horizontal,"出生日期");
    qryModel->setHeaderData(5,Qt::Horizontal,"手机");
    qryModel->setHeaderData(6,Qt::Horizontal,"省份");
    qryModel->setHeaderData(7,Qt::Horizontal,"城市");
    qryModel->setHeaderData(8,Qt::Horizontal,"部门");
    qryModel->setHeaderData(9,Qt::Horizontal,"学历");
    qryModel->setHeaderData(10,Qt::Horizontal,"工资");

    theSelection=new QItemSelectionModel(qryModel);

执行sql语句：

cpp 复制代码

    QSqlQuery query; //查询当前empNo的Memo和Photo字段的数据
    query.prepare("select EmpNo, Memo, Photo from employee where EmpNo = :ID");
    query.bindValue(":ID",empNo);
    query.exec();
    query.first();