怎样在couchdb里面有js让 key加上lable name，比如UserId: "？

请教下怎样写javascript，在couchdb里面，把key加上lable nameUserId:"abc123", couchdb里面有个list 功能不知可否实现，谢谢
以下是已经有的map reduce和list功能
map

function(doc) { var usersLength = doc.users.length; for (var i = 0; i < usersLength ; i++) { if (doc.users[i].UserId) {emit([doc.users[i].UserId,doc.Service.type,doc.Service.counTry], 1); } }}

reduce:

function(keys, values, rereduce) { return sum(values); }

list:

function(head, req){var row;var 优艾设计网_Photoshop论坛rows=[];while(row = getRow()){ rows.push(row); } rows.sort( function(a, b){return a.value - b.value; }); rows.reverse();send(JSON.stringify({"rows" : rows}))}

然后访问view：_list/orderList/labelforkey?startkey=["abc123"]&endkey=["abc123",{}]&group=true

目前得到的结果是：

{ "rows": [ { "key": [ "abc123", "HardWare", "US", ], "value": 134 }.... ][ { "key": [ "abc123", "HardWare", "CA", ], "value": 120 }.... ]}

如何给key加上lable， 比如UserId:"abc123"，如下所示：

{ "rows": [ { "key": [ UserId:"abc123", Service.type:"HardWare", Service.counTry:"US", ], "value": 134 }.... ]}

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