魔道晓树的专栏

mongodb 首先默认无密码启动 1 添加root用户： db.createUser( { user: "root", pwd: "password", roles: [{"role":"root","db":"admin"}], /* All built-in Roles Database User Roles: read|readWrite Database Admin Roles: dbAdmin|dbOwner|user

Install MongoDB on Ubuntu Overview Use this tutorial to install MongoDB on Ubuntu Linux systems. The tutorial uses .deb packages to install. While Ubuntu includes its own MongoDB packages, the

Mongodb 多集合 多表 统计实战完成以下报表： 涉及到的表person、appointmentRecord人数统计在person表使用聚合函数 db.Person.aggregate(）就行[ { $match: { 'dateOfBirth': { $gt: '1986-12-02', $lt: '1996-12-02',

com.his.mongodb.exception.SystemMongoDBException: com.mongodb.MongoQueryException: Query failed with error code 2 and error message ‘bad sort specification’ on server解决： Document sort = new Docume