>db.mycol.find({"likes": {$gt:10},$or: [{"by":"yiibai tutorials"},{"title": "MongoDB Overview"}]}).pretty() { "_id": 100, "title": "MongoDB Overview", "description": "MongoDB is no sql database", "by": "yiibai tutorials", "url": "http://www.yiibai.com", "tags"...
frombson.objectidimportObjectId# The web framework gets post_id from the URL and passes it as a stringdefget(post_id):# Convert from string to ObjectId:document = client.db.collection.find_one({'_id': ObjectId(post_id)}) See also When I query for a document by ObjectId in my web...
>>>post_id=posts.insert_one(post).inserted_id >>>post_id ObjectId('...') 1. 2. 3. 4. Getting a Single Document 最基本查询的函数是find_one。该函数返回匹配查询的一个文档(如果没有,返回None)。 >>>importpprint >>>pprint.pprint(posts.find_one()) {u'_id':ObjectId('...'), u'...
这些操作都可以通过 find_one()、find() 完成：ret2find = collect.find_one()# {'_id': ObjectId('5ea780bf747e3e128470e485'), 'class_name': '⾼三（1）班', 'student_name': '张三', 'subject': '英语', 'score': 100, 'date': '20200301'} ret2find = collect.find()# <pymongo....
PyMongo adds an_idfield in this manner for a few reasons: All MongoDB documents must have an_idfield. If PyMongo inserts a document without an_idfield, MongoDB adds one itself, but doesn't report the value back to PyMongo for your application to use. ...
} return total; }""")result = db.things.map_reduce(mapper, reducer, "myresults")for doc in result.find(): print(doc){u'_id': u'cat', u'value': 3.0}{u'_id': u'dog', u'value': 2.0}{u'_id': u'mouse', u'value': 1.0}map和red...
Model classes can be used to find individual documents by ID: order=Order.find_by_id(some_id)# returns an instance of Order# or throws NotFoundException or using a search condition: order=Order.find_one({'total_due': {'$gte':'10'}})# returns an instance of Order ...
A 400 Bad Request Error occurs when a request sent to the website server is incorrect or ...
您可以使用以下方法在MongoDB中使用“like”regex执行查询：
find_one_by_id(spam.id) # Find One By Query result = spam_repository.find_one_by({'foo.count': 1}) # Find By Query results = spam_repository.find_by({'foo.count': {'$gte': 1}})About Document object mapper for pydantic and pymongo Resources Readme License MIT license ...