引用PyMongo
import pymongo
创建连接Connection
import pymongo
conn = pymongo.Connection('localhost',27017)
或
from pymongo import Connection
conn = Connection('localhost',27017)
创建Connection时，指定host及port参数
import pymongo
conn = pymongo.Connection(host='127.0.0.1',port=27017)
连接数据库
db = conn.ChatRoom
或
db = conn['ChatRoom']
连接聚集
account = db.Account
或 account = db[“Account”]
查看全部聚集名称
db.collection_names()
查看聚集的一条记录
db.Account.find_one()
db.Account.find_one({"UserName":"keyword"})
查看聚集的字段
db.Account.find_one({},{"UserName":1,"Email":1})
// {u'UserName': u'libing', u'_id': ObjectId('4ded95c3b7780a774a099b7c'), u'Email': u'libing@35.cn'}
db.Account.find_one({},{"UserName":1,"Email":1,"_id":0})
// {u'UserName': u'libing', u'Email': u'libing@35.cn'}
查看聚集的多条记录
for item in db.Account.find():
item
for item in db.Account.find({"UserName":"libing"}):
item["UserName"]
查看聚集的记录统计
db.Account.find().count()
db.Account.find({"UserName":"keyword"}).count()
聚集查询结果排序
db.Account.find().sort("UserName") --默认为升序
db.Account.find().sort("UserName",pymongo.ASCENDING) --升序
db.Account.find().sort("UserName",pymongo.DESCENDING) --降序
聚集查询结果多列排序
db.Account.find().sort([("UserName",pymongo.ASCENDING),("Email",pymongo.DESCENDING)])
添加记录
db.Account.insert({"AccountID":21,"UserName":"libing"})
修改记录
db.Account.update({"UserName":"libing"},{"$set":{"Email":"libing@126.com","Password":"123"}})
删除记录
db.Account.remove() -- 全部删除
db.Test.remove({"UserName":"keyword"})