1. Show the main table.
2. Show the second table by row selection of the main table.
3. Needs to customization of the main table header: QLineEdit for each columns for filtering.

//Table1
    model1 = new QSqlTableModel(this);
    model1->setTable("table1_t");
    model1->setEditStrategy(QSqlTableModel::OnManualSubmit);
    model1->select();

    model1->setHeaderData(0, Qt::Horizontal, tr("Col1"));
    model1->setHeaderData(1, Qt::Horizontal, tr("Col2"));

    ui->view1->setModel(model1);

    //Table2
    model2 = new QSqlTableModel(this);
    model2->setTable("table2_t");
    model2->select();

    model2->setHeaderData(0, Qt::Horizontal, tr("Col1"));
    model2->setHeaderData(1, Qt::Horizontal, tr("Col2"));
    model2->setHeaderData(2, Qt::Horizontal, tr("Col3"));

    ui->view2->setModel(model2);

How to connect view1 and view2 between each other?
Thank you!