I've got the follow problem with this query:

Qt Code: 
  1. QSqlQuery *cola2 = new QSqlQuery( "INSERT INTO preguntas ( pregunta, dificultad, referencia, respuesta ) VALUES ( ?, ?, ?, ? )" );
  2.             cola2->bindValue( 0, c->texto );
  3.             cola2->bindValue( 1, c->dificultad );
  4.             cola2->bindValue( 2, c->referencia );
  5.             cola2->bindValue( 3, c->respuesta );
  6.             if( !cola2->exec() )
  7.             {
  8.                cout<<"agregar_pregunta()::Error al ejecutar la cola de insercion "<<endl;
  9.                cout<<"agregar_pregunta()::Descripcion del error: "<<cola2->lastError().text()<<endl;
  10.                TElog->append( "No se pudo agregar la pregunta a la db" );
  11.             }
  12.             else
  13.             {
  14.                cout<<"agregar_pregunta()::Registro Agregado"<<endl;
  15.                agregadas++;
  16.             }
  17.             delete(cola2);
To copy to clipboard, switch view to plain text mode 

this query is ona cycle for each record that must be inserted... but at doing a export of the table gets one empty record and a good record..
chequed that this query is executed only once in each record insertion.
Thanks in advance...