__PACKAGE__->table('treelike');
__PACKAGE__->add_columns(
'id' => { data_type => 'integer', is_auto_increment => 1 },
- 'parent' => { data_type => 'integer' },
+ 'parent' => { data_type => 'integer' , is_nullable=>1},
'name' => { data_type => 'varchar',
size => 100,
},