QTablaView::hiderow(int ) won't work

[ottoshmidt]

QSqlTableModel *model;
    model = new QSqlTableModel;
 
    model->setTable("clientcategory");
    model->select();
 
ui->tableView->setModel(model);
 
    ui->tableView->hideRow(0);

QSqlTableModel *model;
    model = new QSqlTableModel;

    model->setTable("clientcategory");
    model->select();

ui->tableView->setModel(model);

    ui->tableView->hideRow(0);

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Does't really hide that row?