Search Logic

[Stephen28]

can any one help me with how to write logic to search button. Qt based one.. I have stored value in back end database. and showing the search in table view widget of my gui. how can i write query if user ender and searching any of these one field or h=

SELECT * FROM userdata WHERE (username LIKE '%' OR username LIKE 'Sam') AND (userrole LIKE 'Admin' OR userrole LIKE '%');

I have tried to retrieve like this, i know it'll give all the values in the data.how can i write query for this?!

[Emre MUTLU]

QString nameField=ui->lineEdit_name->Text();
QString comboBoxRole=ui->comboBox_role->currentText();
QString salaryField=ui.lineEdit_salary->Text();

Query:

SELECT * FROM userdata WHERE(username LIKE'"+nameFiled+"%'  OR userrole LIKE '"+comboBoxRole+"%' OR salary LIKE'"+salaryField+"%' );

you want like this ?

[Stephen28]

QString UserNameS=ui->SearchBox_Name->text();
QString UserRoleS = ui->SearchBox_Role->currentText();
QString UserSalaryS= ui->SearchBox_Salary->text();

if (database.open()) {
    QMessageBox ::information(this,"Connection","Database is connected");
    //        QMessageBox::information(this,"Cnnected","connected");

    this->model= new QSqlQueryModel();
    QSqlQuery* qry1= new QSqlQuery();

    qry1->prepare("SELECT * FROM userdata WHERE (username LIKE '%' OR username LIKE ':UserNameS') AND (userrole LIKE ':UserRoleS' OR userrole LIKE '%');"); //SELECT * FROM userdata WHERE username IN (:UserNameS,'') AND userrole IN (:UserRoleS,'')//SELECT * FROM userdata WHERE username IN (:UserNameS,'%') AND userrole LIKE (:UserRoleS,'%');

    qry1->bindValue(":UserNameS",UserNameS);
    qry1->bindValue(":UserRoleS",UserRoleS);


    if (!qry1->exec()) {
        QMessageBox::information(this,"Failed","Query Not Executed");
    }else {

        while(qry1->next()) {
            QString UserNameFromDb =qry1->value(1).toString();
            QString UserRoleFromDb=qry1->value(2).toString();

            if ((UserNameFromDb==UserNameS) || (UserRoleFromDb==UserRoleS) ) {   // && (UserRoleFromDb==UserRoleS)
                //qry1->exec();
                model->setQuery(*qry1);
                ui->SearchResult->setModel(model);
            }else {
                QMessageBox::information(this,"No User Found","No User Found in this name");
            }

        }

yes i want like this,but i dont know how to write query or logic for this