#include <QtCore/QCoreApplication>
#include <QsqlDatabase>
#include <QsqlQuery>
#include <QVariant>
#include <QsqlRecord>

int main(int argc,char *argv[])
{
  QCoreApplication a(argc,argv);
  QsqlDatabase db = QsqlDatabase::addDatabase( "QsqlITE" );
  db.setHostName( "MyHost" );
  db.setDatabaseName( "c:\\tmp\\db.sql" );
  db.open();

  QsqlQuery( "CREATE TABLE a ( b INT )",db );
  QsqlQuery query( db );
  query.prepare( "INSERT INTO a ( b ) VALUES ( :b )" );
  //  Insert NULL value into table (NULL variant).
  query.bindValue( ":b",QVariant( QVariant::Int ) );
  query.exec();
  query = QsqlQuery( "SELECT * FROM a",db );
  query.next();
  //  Get value from table - it has type string and is "".
  QVariant val = query.value( query.record().indexOf( "b" ) );
  QVariant::Type type = val.type();
  QString str = val.toString();
}