doc_src_sql-driver_snippet.cpp

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
QSqlQuery query;
QVariant v;
query.setForwardOnly(true);
query.exec("SELECT * FROM table");
while (query.next()) {
    // Handle changes in every iteration of the loop
    v = query.result()->handle();
 
    if (qstrcmp(v.typeName(), "PGresult*") == 0) {
        PGresult *handle = *static_cast<PGresult **>(v.data());
        if (handle) {
            // Do something...
        }
    }
}