QSqlQuery execBatch with single index column parameter count mismatch failure

CMakeLists.txt

cmake_minimum_required(VERSION 3.16)

project(index_col_db VERSION 0.1 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Qt6 6.5 REQUIRED COMPONENTS Core Sql)

qt_standard_project_setup(REQUIRES 6.5)

qt_add_executable(appindex_col_db
    src/main.cpp
)

include_directories(src)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
set_target_properties(appindex_col_db PROPERTIES
#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appindex_col_db
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

target_link_libraries(appindex_col_db
    PRIVATE
        Qt6::Core
        Qt6::Sql
)

include(GNUInstallDirs)
install(TARGETS appindex_col_db
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

main.cpp

/**************************************************************
** Copyright (c) 2024 The Qt Company
**
** This file is provided as-is, with no warranties as to use
** or fitness for any purpose.
**
** This file is provided as part of a proof of concept example
** distributed by representatives of The Qt Company and may be
** used for demonstration purposes only. Any other use must be
** explicitly granted in writing by an authorized Qt Company
** employee or representative.
**
**************************************************************/

#include <QCoreApplication>
#include <QDebug>
#include <QTimer>

#include <QSqlDatabase>
#include <QSqlError>
#include <QSqlQuery>

bool createSimpleDb()
{
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "indexcoldb");
    db.setDatabaseName("/tmp/indexcoldb.sqlite");
    if (!db.open()) {
        qWarning() << "Unable to open database. An error occurred while opening the connection:" << db.lastError().text();
        return false;
    }
    db.transaction();
    QSqlQuery q(db);
    q.exec("drop table MyTable");
    q.exec("CREATE TABLE MyTable (index INTEGER PRIMARY KEY)");
    q.prepare("INSERT INTO MyTable VALUES (?)");

    for (auto i = 1; i <= 10; i++) {
        QVariantList l;
        l.append(i);
        q.addBindValue(l);
    }
    if(!q.execBatch())
        qWarning() << "execBatch to /tmp/indexcoldb.sqlite db failed:" << q.lastError().text();
    if (!db.commit())
        qWarning() << "Commit to indexcoldb.qslite failed";
    db.close();

    return true;
}

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    createSimpleDb();

    QTimer::singleShot(0, &app, [&app](){
        app.quit();
    });
    return app.exec();
}

output

10:07:31: Starting /home/kyzik/Build/timross-stockapp/option-trade-display-poc/build/Desktop_Qt_6_7_2-Release/appoption_trade_display_poc...
execBatch to /tmp/optiontrade.sqlite db failed: "Parameter count mismatch"