mongodb
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Claroja
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mongoDB 配置文件
D:\Program Files\MongoDB\Server\3.4在根目录创建data,log和mongo.conf文件dbpath=D:\Program Files\MongoDB\Server\3.4\data #数据库路径logpath=D:\Program Files\MongoDB\Server\3.4\log #日志路径logappend=true #追加模式jou...原创 2019-06-04 20:57:33 · 2804 阅读 · 1 评论 -
MongoDB Comparison Query Operators(比较操作符)
NameDescription$eqMatches values that are equal to a specified value.$gtMatches values that are greater than a specified value.$gteMatches values that are greater than or equal to a...原创 2019-09-04 21:13:39 · 461 阅读 · 0 评论 -
MongoDB Project Fields
通过Project可以返回指定的字段[ { item: "journal", status: "A", size: { h: 14, w: 21, uom: "cm" }, instock: [ { warehouse: "A", qty: 5 } ] }, { item: "notebook", status: "A", size: { h: 8.5, w: 11, uom: "in...原创 2019-09-04 21:14:08 · 653 阅读 · 0 评论 -
MongoDB Query Array of Embedded
[ { item: "journal", instock: [ { warehouse: "A", qty: 5 }, { warehouse: "C", qty: 15 } ] }, # 1 { item: "notebook", instock: [ { warehouse: "C", qty: 5 } ] }, # 2 { item: "paper", instock: [...原创 2019-09-04 21:14:34 · 444 阅读 · 1 评论 -
MongoDB Query Array
[ { item: "journal", qty: 25, tags: ["blank", "red"], dim_cm: [ 14, 21 ] }, # 1 { item: "notebook", qty: 50, tags: ["red", "blank"], dim_cm: [ 14, 21 ] }, # 2 { item: "paper", qty: 100, tags: ...原创 2019-09-04 21:15:03 · 514 阅读 · 0 评论 -
MongoDB Query Embedded(嵌套类型)
[ { item: "journal", qty: 25, size: { h: 14, w: 21, uom: "cm" }, status: "A" }, #1 { item: "notebook", qty: 50, size: { h: 8.5, w: 11, uom: "in" }, status: "A" }, #2 { item: "paper", qty...原创 2019-09-04 21:15:39 · 796 阅读 · 0 评论 -
MongoDB Insert(插入)
插入方法描述db.collection.insertOne()Inserts a single document into a collection.db.collection.insertMany()db.collection.insertMany() inserts multiple documents into a collection.db.collec...原创 2019-09-04 21:16:12 · 2237 阅读 · 0 评论 -
MongoDB Documents
{ field1: value1, field2: value2, field3: value3, ... fieldN: valueN}参考:https://docs.mongodb.com/manual/core/document/原创 2019-09-04 21:16:41 · 317 阅读 · 0 评论 -
MongoDB Collections
如果集合不存在则创建集合,如果集合存在则在集合里面添加db.myNewCollection2.insertOne( { x: 1 } )参考:https://docs.mongodb.com/manual/core/databases-and-collections/#collections...原创 2019-09-04 21:17:05 · 445 阅读 · 0 评论 -
MongoDB Databases
创建或进入数据库use myDB如果数据库不存在则创建数据库,如果数据库存在则进入数据库查看数据库show dbs参考https://docs.mongodb.com/manual/core/databases-and-collections/...原创 2019-09-04 21:18:12 · 316 阅读 · 0 评论 -
MongoDB shell
Shell HelpersJavaScript Equivalentsshow dbs, show databasesdb.adminCommand(‘listDatabases’)use db = db.getSiblingDB(’’)show collectionsdb.getCollectionNames()show usersdb.getUse...原创 2019-09-04 21:20:22 · 327 阅读 · 0 评论 -
MongoDB Database Methods(数据库方法)
NameDescriptiondb.adminCommand()Runs a command against the admin database.db.aggregate()Runs admin/diagnostic pipeline which does not require an underlying collection.db.cloneCollect...原创 2019-09-04 21:20:50 · 510 阅读 · 0 评论 -
MongoDB Collection Methods
NameDescriptiondb.collection.aggregate()Provides access to the aggregation pipeline.db.collection.bulkWrite()Provides bulk write operation functionality.db.collection.copyTo()Deprec...原创 2019-09-04 21:21:17 · 397 阅读 · 0 评论 -
MongoDB Logical Query Operators(逻辑操作符)
NameDescription$andJoins query clauses with a logical AND returns all documents that match the conditions of both clauses.$notInverts the effect of a query expression and returns docume...原创 2019-09-04 21:13:03 · 261 阅读 · 0 评论 -
MongoDB Element Query Operators(元素判断操作符)
NameDescription$existsMatches documents that have the specified field.$typeSelects documents if a field is of the specified type.参考:https://docs.mongodb.com/manual/reference/operato...原创 2019-09-04 21:12:36 · 421 阅读 · 0 评论 -
MongoDB 用户管理
use admindb.createUser( { user:"root", pwd:"root", roles:[{role:"root",db:"admin"}] } )用户角色描述数据库用户角色read、readWrite;命令描述show users查询所有用户d...原创 2019-06-04 20:59:11 · 646 阅读 · 0 评论 -
MongoDB SQL
SQLMDB描述databasedatabase数据库tablecollection表rowdocument一行记录columnfield字段indexindex索引table joins表连接（MongoDB不支持）primary keyprimary key主键,MongoDB自动在每个集合中添加_id的主键...原创 2019-06-04 20:59:53 · 990 阅读 · 0 评论 -
MongoDB Role Management Methods(角色管理)
NameDescriptiondb.createRole()Creates a role and specifies its privileges.db.dropRole()Deletes a user-defined role.db.dropAllRoles()Deletes all user-defined roles associated with a ...原创 2019-09-04 21:05:33 · 309 阅读 · 0 评论 -
MongoDB User Management Methods(用户管理)
NameDescriptiondb.auth()Authenticates a user to a database.db.changeUserPassword()Changes an existing user’s password.db.createUser()Creates a new user.db.dropUser()Removes a si...原创 2019-09-04 21:06:45 · 284 阅读 · 0 评论 -
MongoDB 更新collection内部array顺序
import pymongoclient = pymongo.MongoClient("mongodb://localhost:27017/")db = client["test"]col = db['test']col.drop()docs=[ {'name':{'first':'wang','last':'ming'},'age':15,'score':[{'chi':60...原创 2019-09-04 21:07:17 · 1142 阅读 · 1 评论 -
MongoDB Cursor Methods
这个就是对find方法的补充NameDescriptioncursor.addOption()Adds special wire protocol flags that modify the behavior of the query.’cursor.batchSize()Controls the number of documents MongoDB will r...原创 2019-09-04 21:07:43 · 535 阅读 · 0 评论 -
MongoDB Aggregation Pipeline Operators
Arithmetic Expression OperatorsArray Expression OperatorsBoolean Expression OperatorsComparison Expression OperatorsConditional Expression OperatorsDate Expression OperatorsString Expression Ope...原创 2019-09-04 21:08:11 · 367 阅读 · 0 评论 -
MongoDB Aggregation Pipeline Stages
StageDescription$addFieldsAdds new fields to documents. Similar to $project, addFieldsreshapeseachdocumentinthestream;specifically,byaddingnewfieldstooutputdocumentsthatcontainboththeexisti...原创 2019-09-04 21:08:39 · 685 阅读 · 0 评论 -
MongoDB Field Update Operators
NameDescription$currentDateSets the value of a field to current date, either as a Date or a Timestamp.$incIncrements the value of the field by the specified amount.$minOnly updates ...原创 2019-09-04 21:09:12 · 387 阅读 · 0 评论 -
MongoDB Array Query Operators
NameDescription$allMatches arrays that contain all elements specified in the query.$elemMatchSelects documents if element in the array field matches all the specified $elemMatch conditi...原创 2019-09-04 21:11:07 · 326 阅读 · 0 评论 -
MongoDB Geospatial Query Operators(地理数据请求)
NameDescription$geoIntersectsSelects geometries that intersect with a GeoJSON geometry. The 2dsphere index supports $geoIntersects.$geoWithinSelects geometries within a bounding GeoJSON...原创 2019-09-04 21:11:38 · 342 阅读 · 0 评论 -
MongoDB Evaluation Query Operators
NameDescription$exprAllows use of aggregation expressions within the query language.$jsonSchemaValidate documents against the given JSON Schema.$modPerforms a modulo operation on th...原创 2019-09-04 21:12:06 · 238 阅读 · 0 评论 -
MongoDB
mongoDB 配置文件MongoDB 用户管理MongoDB SQLMongoDB 更新collection内部array顺序MongoDB DocumentsMongoDB Insert(插入)MongoDB Query Embedded(嵌套类型)MongoDB Query ArrayMongoDB Query Array of EmbeddedMongoDB Projec...原创 2019-09-04 21:21:50 · 6538 阅读 · 2 评论