IF (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
    {
        rettuple = trigdata->tg_trigtuple;
        bool isnull = false;
        uint32 x=rettuple->t_len;
        int8 f;
            f = (int8) GetAttributeByNum(rettuple->t_data, 1, &isnull);
        elog(INFO,"len of tuple: %d",x);
        elog(INFO,"first column being inserted <img class="ccfilter smileys" src="https://pgdocs.ru/sites/ALL/modules/ccfilter/smileys/al.gif" alt="x:" title="x:" /> %d",f);
     }