mongo命令

mongo

show dbs

use xxdb

show collectons

db.xxtable.count()

db.xxtable,dataSize()

db.xxtable.drop()

db.xxtable.dropIndex(name)

db.xxtable.dropIndexs()

db.xxtable.find( [query] , [fields]) - first parameter is an optional query filter. second parameter is optional set of fields to return

db.foo.save({'name':'ysz','address':{'city':'beijing','post':100096},'phone':[138,139]})  

db.foo.update({'yy':5},{'$set':{'xx':2}},upsert=true,multi=true)

db.foo.update({'yy':5},{'$set':{'xx':2}},upsert=true,multi=true)

db.foo.remove()