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                ## 排序 * 方法sort(),用于對結果集進行排序 * 語法 ~~~ db.集合名稱.find().sort({字段:1,...}) ~~~ * 參數1為升序排列 * 參數-1為降序排列 * 例1:根據性別降序,再根據年齡升序 ~~~ db.stu.find().sort({gender:-1,age:1}) ~~~
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