mongodb索引介绍

MongoDB索引介绍

一、Single Field Indexes 示例文档：{"_id":ObjectId("570c04a4ad233577f97dc459"),"score":1034,"location":{ state:"NY",city:"New York"} } 1、语法：db.records.createIndex({ score:1 })2、在嵌套字段上创建索引 db.records....

每篇半小时1天入门MongoDB——4.MongoDB索引介绍及数据库命令操作

\Users\zouqi>mongo MongoDB shell version:3.0.7 connecting to:test 查看数据库和集合>show dbs demo 0.078GB local 0.078GB myDatabase 0.078GB myTest 0.078GB>use myTest switched to db myTest>show collections persons system....

MongoDB索引属性介绍

一、TTL索引 1、语法 db.eventlog.createIndex({"lastModifiedDate":1 },{ expireAfterSeconds:3600 })2、TTL索引的功效 TTL索引会根据TTL索引字段在一定的时间限制后自动删除过期文档，TTL索引更多的适用于只需要保存有限时间的集合，如...

mongodb更多"介绍"相关

.mongodb使用介绍 .mongodb介绍安装 .mongodb数据库介绍 .mongodbmongo介绍 .mongodb介绍汇总 .mongodb功能介绍 .mongodb说明介绍 .mongodb分片集群介绍 .mongodb优化器介绍 .mongodb执行介绍 .mongodb阿里技术介绍 .mongodb备份恢复介绍

mongodb索引介绍相关内容

.mongodb索引查询 .mongodb学习笔记索引 .mongodb索引问题 .mongodb查看索引 .mongodb索引数据库 .mongodb索引报错 .mongodb索引使用 .mongodb文档索引 .mongodb索引操作 .mongodb索引功能 .mongodb索引无效 .mongodbdsphere索引 .mongodb索引文件 .mongodb字段索引

您可能感兴趣

.mongodb安装 .mongodb学习 .mongodb操作 .mongodb查询 .mongodb是什么 .mongodb配置 .mongodb报错 .mongodb服务

{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":6,"count":6}]},"card":[{"des":"支持ReplicaSet和Sharding两种部署架构，具备安全审计，时间点备份等多项企业能力。在互联网、物联网、游戏、金融等领域被广泛采用。","link1":"https://www.aliyun.com/product/mongodb","link":"https://www.aliyun.com/product/mongodb","icon":"https://img.alicdn.com/tfs/TB1xhK3RVXXXXXwXpXXXXXXXXXX-114-114.png","btn2":"了解价格","tip":"阿里云MongoDB4.0全新升级，全新事务支持，打破数据库边界，独家数据多活能力，<a href=\" https://yq.aliyun.com/live/584\" target=\"_blank\">观看发布会</a>         最新产品和实时动态重磅发布<a href=\"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716\" target=\"_blank\">立即查看</a>","btn1":"立即购买","link2":"https://www.aliyun.com/price/product?spm=5176.7937264.668853.btn3.76258379ziCwfW#/mongodb/detail","title":"云数据库 MongoDB 版"}],"search":[{"txt":"云数据库MySQL","link":"https://www.aliyun.com/product/rds/mysql?spm=5176.8142029.388261.348.54216d3edqlhkH"},{"txt":"云数据库Redis","link":"https://www.aliyun.com/product/kvstore?spm=5176.8142029.388261.350.54216d3edqlhkH"},{"txt":"云数据库HBase","link":"https://www.aliyun.com/product/hbase?spm=5176.8142029.388261.357.54216d3edqlhkH"},{"txt":"云数据库POLARDB","link":"https://www.aliyun.com/product/polardb?spm=5176.8142029.388261.352.54216d3edqlhkH"},{"txt":"云数据库MongoDB4.0","link":"https://promotion.aliyun.com/ntms/act/mongodb-newversion-live.html"},{"txt":"云数据库 MongoDB 4.0 详解","link":"https://yq.aliyun.com/articles/671038"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://img.alicdn.com/tfs/TB1KM.qIeH2gK0jSZJnXXaT1FXa-1740-328.png","icon":"mongodb","contentLink":"https://www.aliyun.com/product/mongodb","title":"云数据库 MongoDB 版","des":"支持ReplicaSet和Sharding两种部署架构，具备安全审计，时间点备份等多项企业能力。在互联网、物联网、游戏、金融等领域被广泛采用。","btn1":"产品详情","link1":"https://www.aliyun.com/product/mongodb","btn2":"管理控制台","link2":"https://mongodb.console.aliyun.com/replicate/cn-hangzhou/instances","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?from=yAAzuk58kF","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MongoDB 9.9元/3月","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=mongodb_serverless_public_cn&request=%7B%22ord_time%22:%223:Month%22,%22order_num%22:1,%22region%22:%22cn-hangzhou%22,%22zone_id%22:%22cn-hangzhou-b%22,%22spec_class%22:100,%22storage%22:5%7D&activityId=1510520412194083","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentLink":"https://help.aliyun.com/product/26556.html","firstContentName":"帮助文档","lastContentLink":"https://help.aliyun.com/document_detail/54260.html","lastContentName":"快速入门"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/85928.html","firstContentName":"与自建数据库对比优势","lastContentLink":"https://www.aliyun.com/database/case","lastContentName":"数据库客户案例合集"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"数据管理DMS","firstContentLink":"https://www.aliyun.com/product/dms","lastContentName":"数据库备份DBS","lastContentLink":"https://www.aliyun.com/product/dbs"}}],"ifIcon":"icon"}]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":6,"count":6}]},"card":[{"des":"支持ReplicaSet和Sharding两种部署架构，具备安全审计，时间点备份等多项企业能力。在互联网、物联网、游戏、金融等领域被广泛采用。","link1":"https://www.aliyun.com/product/mongodb","link":"https://www.aliyun.com/product/mongodb","icon":"https://img.alicdn.com/tfs/TB1xhK3RVXXXXXwXpXXXXXXXXXX-114-114.png","btn2":"了解价格","tip":"阿里云MongoDB4.0全新升级，全新事务支持，打破数据库边界，独家数据多活能力，<a href=\" https://yq.aliyun.com/live/584\" target=\"_blank\">观看发布会</a>         最新产品和实时动态重磅发布<a href=\"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716\" target=\"_blank\">立即查看</a>","btn1":"立即购买","link2":"https://www.aliyun.com/price/product?spm=5176.7937264.668853.btn3.76258379ziCwfW#/mongodb/detail","title":"云数据库 MongoDB 版"}],"search":[{"txt":"云数据库MySQL","link":"https://www.aliyun.com/product/rds/mysql?spm=5176.8142029.388261.348.54216d3edqlhkH"},{"txt":"云数据库Redis","link":"https://www.aliyun.com/product/kvstore?spm=5176.8142029.388261.350.54216d3edqlhkH"},{"txt":"云数据库HBase","link":"https://www.aliyun.com/product/hbase?spm=5176.8142029.388261.357.54216d3edqlhkH"},{"txt":"云数据库POLARDB","link":"https://www.aliyun.com/product/polardb?spm=5176.8142029.388261.352.54216d3edqlhkH"},{"txt":"云数据库MongoDB4.0","link":"https://promotion.aliyun.com/ntms/act/mongodb-newversion-live.html"},{"txt":"云数据库 MongoDB 4.0 详解","link":"https://yq.aliyun.com/articles/671038"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://img.alicdn.com/tfs/TB1KM.qIeH2gK0jSZJnXXaT1FXa-1740-328.png","icon":"mongodb","contentLink":"https://www.aliyun.com/product/mongodb","title":"云数据库 MongoDB 版","des":"支持ReplicaSet和Sharding两种部署架构，具备安全审计，时间点备份等多项企业能力。在互联网、物联网、游戏、金融等领域被广泛采用。","btn1":"产品详情","link1":"https://www.aliyun.com/product/mongodb","btn2":"管理控制台","link2":"https://mongodb.console.aliyun.com/replicate/cn-hangzhou/instances","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?from=yAAzuk58kF","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MongoDB 9.9元/3月","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=mongodb_serverless_public_cn&request=%7B%22ord_time%22:%223:Month%22,%22order_num%22:1,%22region%22:%22cn-hangzhou%22,%22zone_id%22:%22cn-hangzhou-b%22,%22spec_class%22:100,%22storage%22:5%7D&activityId=1510520412194083","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentLink":"https://help.aliyun.com/product/26556.html","firstContentName":"帮助文档","lastContentLink":"https://help.aliyun.com/document_detail/54260.html","lastContentName":"快速入门"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/85928.html","firstContentName":"与自建数据库对比优势","lastContentLink":"https://www.aliyun.com/database/case","lastContentName":"数据库客户案例合集"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"数据管理DMS","firstContentLink":"https://www.aliyun.com/product/dms","lastContentName":"数据库备份DBS","lastContentLink":"https://www.aliyun.com/product/dbs"}}],"ifIcon":"icon"}]}}

云数据库 MongoDB 版

支持ReplicaSet和Sharding两种部署架构，具备安全审计，时间点备份等多项企业能力。在互联网、物联网、游戏、金融等领域被广泛采用。

产品详情

管理控制台

在线咨询