javascript - 更新现有文档字段而不会丢失Couch DB中的旧文档数据

这是我的Couch DB文件

{"people": [{"id": 1,"dept_id": 1,"user": "A",},{"id": 2,"dept_id": 1,"user": "B",},{"id": 3,"dept_id": 1,"user: "C",}]}

用户A在邮袋DB中将其dept_id更改为3

{"people": [{"id": 1,"dept_id": 3,"user": "A",},{"id":2 ,"dept_id": 1,"user": "B",},{"id": 3,"dept_id": 1,"user": "C",}]}

用户B在邮袋DB中将其dept_id更改为4

{"people": [{"id": 1,"dept_id": 1,"user": "A"},{"id":2 ,"dept_id": 4,"user": "B"},{"id": 3,"dept_id": 1,"user": "C"}]}

如果A和B将数据复制到Couch DB，则Couch文档更新为



但是我的预期输出



我已经尝试过更新Db邮袋

var mydb = new PouchDB('localPouchDb',{revs_limit: 1, auto_compaction: true});db.upsert('people ', function myDeltaFunction(doc) { doc.dept_id=4  return doc;}).then(function () {  console.log('success')}).catch(function (err) { console.log(err)});

我已经尝试过用沙发袋复制沙发Db

var remoteDB = new PouchDB('remote address',{revs_limit: 1, auto_compaction: true});db.replicate.to(remoteDB);

我搜索了一些链接，他们说



https://www.tutorialspoint.com/couchdb/couchdb_updating_a_document.htm

How to update a document's record/field in couchdb

最佳答案

你做不到因为CouchDb允许将数据另存为JSON记录。因此，最后更新的记录将添加到bedDB中。

如果要针对特定​​功能执行此操作，请将其作为单独的文档