my $query = "SELECT mtime, itime FROM " . $table . " WHERE id = ?";
my $ref = selectfirst_hashref_query($self, $self->get_standard_dbh, $query, $self->{id});
my $query = "SELECT mtime, itime FROM " . $table . " WHERE id = ?";
my $ref = selectfirst_hashref_query($self, $self->get_standard_dbh, $query, $self->{id});