command for Database drop is : first select the database which you want to delete use < database name > db.dropDatabase() echo "db.dropDatabase()" | mongo <database name> 1.
drop(),dropIndexes,emptycapped,ensureIndex() findAndModify,mapReduce (output to a collection.) renameCollection (within the same database.) read和readWrite主要就是对库中表的操作权限 dbAdmin 指定数据库的管理权限 clean,collMod,collStats,compact,convertToCapped create,db.createCollection(),dbStats,drop(...
2)删除数据库 直接使用db.dropDatabase()即可删除数据库。 3)创建集合 可以使用命令db.createCollection(name, { size : ..., capped : ..., max : ... } )创建集合,示例如下所示: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 > db.createCollection('replicationColletion', {'capped':true,...
db.dropDatabase()2. 客户端连接/usr/local/mongodb/bin/mongo user_addr -u user -p 'pwd' 3. 增删改 #存储嵌套的对象 db.foo.save({'name':'ysz','address':{'city':'beijing','post':100096},'phone':[138,139]}) #存储数组对象 db.user_addr.save({'Uid':'yushunzhi@sohu.com','Al'...
#查看所有库 show dbs # 切换到指定数据库,不存在则创建 use test # 删除当前数据库 db.dropDatabase() 2.3.2、集合操作 #查看集合 show collections #创建集合 db.createCollection("emp") #删除集合 db.emp.drop() 创建集合语法 db.createCollection(name,options) options参数 字段类型描述 capped 布尔...
dropDatabase(writeConcern) db.dropUser(username) db.eval() - deprecated db.fsyncLock() flush data to disk and lock server for backups db.fsyncUnlock() unlocks server following a db.fsyncLock() db.getCollection(cname) same as db['cname'] or db.cname db.getCollectionInfos([filter]) - ...
使用mongoimport工具导入数据[[Download MongoDB Tools](Download MongoDB Command Line Database Tools | MongoDB) 下载完成后,打开bin目录进行cmd mongoimport -h 101.34.254.161 -d appdb -u root -p root --authenticationDatabase=admin -c zips --file C:\Users\YLi_Jing\Desktop\zips.json ...
function clean_and_print(col_name) { print_stats(col_name) // 清空集合 use hcopdb db.getCollection(col_name).drop() // 后台给数据库中指定集合创建hash索引 use db_name db.getCollection(col_name).createIndex({"_id":"hashed"}, { background: true }) db.getCollection(col_name).create...
mongoimport is a MongoDB database tool that imports content from a JSON, CSV, or TSV file created by mongoexport or other tools.
Run mongorestore from the system command line, not the mongo shell. Tip See also: mongodump, which provides the corresponding binary data export capability. MongoDB doesn't support running multiple mongorestore programs concurrently for the same collection. Important You can't use mongorestore wit...