Home Database Mysql Tutorial mongodb中的游标使用

mongodb中的游标使用

Jun 07, 2016 pm 02:58 PM
mongodb use cursor

mongodb中的游标使用 假设: db.XXX.remove(); db.XXX.insert({name:BuleRiver1, age:27}); db.XXX.insert({name:BuleRiver2, age:23}); db.XXX.insert({name:BuleRiver3, age:21}); find()返回一个游标: var cursor = db.XXX.find(); while (cursor.hasNex

mongodb中的游标使用

 

假设:

db.XXX.remove();

db.XXX.insert({"name":"BuleRiver1", "age":27});

db.XXX.insert({"name":"BuleRiver2", "age":23});

db.XXX.insert({"name":"BuleRiver3", "age":21});

find()返回一个游标:

var cursor = db.XXX.find();

while (cursor.hasNext()) {

        obj = cursor.next();

        print(obj.name);

}

使用游标的forEach():

cursor.forEach(function(x) {

        print(x.name);

});

 

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