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  • MongoDB数据库常用命令

    1、常用的命令:

    help                         show help
    show dbs                     show database names
    show collections             show collections in current database
    show users                   show users in current database
    show profile                 show most recent system.profile entries with time >= 1ms
    use <db name>                set curent database to <db name>
    
    db.addUser (username, password)
    db.removeUser(username)
    
    db.cloneDatabase(fromhost)
    db.copyDatabase(fromdb, todb, fromhost)
    db.createCollection(name, { size : ..., capped : ..., max : ... } )
    
    db.getName()
    db.dropDatabase()
    
    // runs the collstats] command on each collection in the database
    db.printCollectionStats()
    
    db.currentOp() displays the current operation in the db
    db.killOp() kills the current operation in the db
    
    db.getProfilingLevel()
    db.setProfilingLevel(level) 0=off 1=slow 2=all
    
    db.getReplicationInfo()
    db.printReplicationInfo()
    db.printSlaveReplicationInfo()
    db.repairDatabase()
    
    db.version() current version of the server
    
    db.shutdownServer()
    2、操作和管理集合的命令:
    db.foo.drop() drop the collection
    db.foo.dropIndex(name)
    db.foo.dropIndexes()
    db.foo.getIndexes()
    db.foo.ensureIndex(keypattern,options) - options object has these possible
                                             fields: name, unique, dropDups
    
    db.foo.find( [query] , [fields])       - first parameter is an optional
                                             query filter. second parameter
                                             is optional
                                             set of fields to return.
    	                                   e.g. db.foo.find(
                                                      { x : 77 } ,
                                                      { name : 1 , x : 1 } )
    db.foo.find(...).count()
    db.foo.find(...).limit(n)
    db.foo.find(...).skip(n)
    db.foo.find(...).sort(...)
    db.foo.findOne([query])
    
    db.foo.getDB() get DB object associated with collection
    
    db.foo.count()
    db.foo.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } )
    
    db.foo.renameCollection( newName ) renames the collection
    
    db.foo.stats()
    db.foo.dataSize()
    db.foo.storageSize() - includes free space allocated to this collection
    db.foo.totalIndexSize() - size in bytes of all the indexes
    db.foo.totalSize() - storage allocated for all data and indexes
    db.foo.validate() (slow)
    
    db.foo.insert(obj)
    db.foo.update(query, object[, upsert_bool])
    db.foo.save(obj)
    db.foo.remove(query)                   - remove objects matching query
                                             remove({}) will remove all
    
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  • 原文地址:https://www.cnblogs.com/likehua/p/2308891.html
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