对象

描述

Column column1 = new Column("a","type");

new Order(column1, Order.ASC);

ORDER BY

a.type ASC

new MultiOrder().asc("type").desc("id");

ORDER BY

type ASC, id DESC

Column column1 = new Column("a","type");

Column column2 = new Column("b","id");

new MultiOrder().asc(column1).desc(column2);

ORDER BY

a.type ASC, b.id DESC