QT 조작 sqlite 데이터베이스 (1) ----- 네트워크 일반 코드

#include <QtCore/QCoreApplication>  
#include <QtSql> 
#include <QTextCodec> 
int main(int argc, char *argv[])
{      
    QCoreApplication a(argc, argv);     
    QTextCodec::setCodecForTr(QTextCodec::codecForLocale());       
    QSqlDatabase dbconn=QSqlDatabase::addDatabase("QSQLITE");    //               
    dbconn.setDatabaseName("mytest.db");  //         mytest.db           
    if(!dbconn.open())    
    {            
        qDebug()<<"fdsfds";       
    }       
    QSqlQuery query;//      QSL         
    query.exec("create table student(id varchar,name varchar)");    //  student ，id     ，    name        
    query.exec(QObject::tr("insert into student values(1,'aaa')"));        
    query.exec(QObject::tr("insert into student values(2,'bbb')"));        
    query.exec(QObject::tr("insert into student values(3,'ccc')"));         
    query.exec(QObject::tr("insert into student values(3,'ddd')"));         
    query.exec(QObject::tr("insert into student values(4,'eee')"));         
    query.exec(QObject::tr("insert into student values(5,'fff')"));         
    query.exec(QObject::tr("insert into student values(6,'ggg')"));        
    query.exec(QObject::tr("select id,name from student where id>=1"));         
    query.exec("select id,name from student where id>=1");         
    while(query.next())//query.next()           ，              
    {              
        int ele0=query.value(0).toInt();//query.value(0) id  ，     int                      
        QString ele1=query.value(1).toString();                     
        qDebug()<<ele0<<ele1;//         
    }      
    query.exec(QObject::tr("drop student"));       
    return a.exec();  
}