Qt技巧：sqlite数据库 判断表是否存在

Posted 2022-09-02 imxiangzi

    m_dbTest = QSqlDatabase::addDatabase("QSQLITE");
    m_dbTest.setDatabaseName("sqlite.db");
    if(m_dbTest.open())
    
        qDebug() << "database succeeded to open";
    
    else
    
        qDebug() << "database failed to open";
    

    QSqlQuery query(m_dbTest);
    bool isTableExist = \\
        query.exec(QString("select count(*) from sqlite_master where type='table' and name='%1'").arg(strTableName)));    //关键的判断
    if(!isTableExist)
    
        qDebug() << "table does not exist";
    
    else
    
        qDebug() << "table exists";
    

FROM: http://blog.chinaunix.net/xmlrpc.php?r=blog/article&uid=29650836&id=4457672