For kompile GnuCash:
dbi_result_get_as_longlong;

/*dbi_result_t *result = (dbi_result_t*)(dbi_row->result);
guint64 row = dbi_result_get_currow (result);
guint idx = dbi_result_get_field_idx (result, col_name) - 1;
time64 time = result->rows[row]->field_values[idx].d_datetime;
/*time64 time = _dbi_make_datetime(result->rows[row]->field_values[idx].d_datetimex);
(void)g_value_init( value, G_TYPE_INT64 );
g_value_set_int64 (value, time);*/
}
break;

in file ../gnc-backend-dbi.c on row 2117 and other.