my $query = "INSERT INTO datev (" . join(', ', @columns) . ") VALUES (" . join(', ', ('?') x @columns) . ")";
do_query($::form, $self->dbh, $query, map { $data->{$_} } @columns);
my $query = "INSERT INTO datev (" . join(', ', @columns) . ") VALUES (" . join(', ', ('?') x @columns) . ")";
do_query($::form, $self->dbh, $query, map { $data->{$_} } @columns);