http://docs.mongodb.org/manual/reference/command/renameCollection/
db.source-namespace.renameCollection( "target" ) 比如把users 替换成 all_users
db.users.renameCollection( "all_users" )
http://docs.mongodb.org/manual/reference/command/renameCollection/
db.source-namespace.renameCollection( "target" ) 比如把users 替换成 all_users
db.users.renameCollection( "all_users" )