如何遍历QSqlTableModel并导出到.csv

QSqlTableModel model;
model.setTable("your_table_name");
model.setDatabase(QSqlDatabase::database("your_connection_name"));

model.select();

QFile file("output.csv");
if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
    QTextStream stream(&file);

    // 写入表头
    for (int i = 0; i < model.columnCount(); i++) {
        stream << model.headerData(i, Qt::Horizontal).toString();
        if (i < model.columnCount() - 1)
            stream << ",";
    }
    stream << "\n";

    // 写入数据
    for (int row = 0; row < model.rowCount(); row++) {
        for (int col = 0; col < model.columnCount(); col++) {
            stream << model.data(model.index(row, col)).toString();
            if (col < model.columnCount() - 1)
                stream << ",";
        }
        stream << "\n";
    }

    file.close();
}

#include <QSqlTableModel>
#include <QFile>
#include <QTextStream>

void exportToCsv() {
    QSqlTableModel model;
    model.setTable("your_table_name");
    model.setDatabase(QSqlDatabase::database("your_connection_name"));
    model.select();

    QFile file("output.csv");
    if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        QTextStream stream(&file);

        // 写入表头
        for (int i = 0; i < model.columnCount(); i++) {
            stream << model.headerData(i, Qt::Horizontal).toString();
            if (i < model.columnCount() - 1)
                stream << ",";
        }
        stream << "\n";

        // 写入数据
        for (int row = 0; row < model.rowCount(); row++) {
            for (int col = 0; col < model.columnCount(); col++) {
                stream << model.data(model.index(row, col)).toString();
                if (col < model.columnCount() - 1)
                    stream << ",";
            }
            stream << "\n";
        }

        file.close();
    }
}