columns => {
        id          => {TYPE_NAME => 'bigint', _EXTRA => 'auto_increment', _PK => 1},
        table_name  => {TYPE_NAME => 'varchar', COLUMN_SIZE => 255},
        column_name => {TYPE_NAME => 'varchar', COLUMN_SIZE => 255},
        id_from     => {TYPE_NAME => 'int'},
        id_to       => {TYPE_NAME => 'int'},
},
keys => {
        id_to => 'id_to',
},