SQL result problem

[Lesiok]

Try this :

QModelIndexList selectedList = ui->tableView_clients->selectionModel()->selectedRows();
 
    int selected_row;
    int i=0;
    selected_row=((selectedList.at(i).row())-1);
    QString row=QString::number(selected_row);
 
    QSqlQuery query;
    QString my_query = QString("DELETE from clients where ClientId=")+row;
    query.prepare(my_query);
 
    query.exec();

QModelIndexList selectedList = ui->tableView_clients->selectionModel()->selectedRows();

    int selected_row;
    int i=0;
    selected_row=((selectedList.at(i).row())-1);
    QString row=QString::number(selected_row);

    QSqlQuery query;
    QString my_query = QString("DELETE from clients where ClientId=")+row;
    query.prepare(my_query);

    query.exec();

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Look what You get in my_query after line 9 and think why.