如何使用NEST（Elasticsearch）UpdateByQuery更新多个字段？

Question

I am using UpdateByQuery, I want to update multiple fields. In Elasticsearch documentation it tells how to update a particular field. How to do it?

Answer 1

if you are using Nest you should use DocAsUpsert. In order to do that do a query first, get the _id of the doc then update based on that.
Small example here, update by id:

 var updateResponse = EsClient.Update<Business, object>(DocumentPath<Business>.Id(elasticId), u => u
                         .Index(_elasticIndex)
                         .Type("business")
                         .Doc(new Business { Field1 ="xxxx", Field2 ="yyyy" })
                         .DocAsUpsert()
                         .Refresh(Refresh.True)
                     );