How to Perform Partial Updates in ElasticSearch Using Olivere/Elastic in Go?

Updating Records in ElasticSearch with Olivere/Elastic in Go

Inserting records into ElasticSearch using Olivere/Elastic is straightforward. However, when it comes to partial updates, documentation for the UPDATE API may be lacking. Here's how you can use this API with Olivere/Elastic in Go.

Solution:

To perform a partial update, you can use the following code:

<code class="go">update, err := client.Update().Index("test3").Type("user").Id("2").Doc(map[string]interface{}{"location": message}).Do()
fmt.Println("updated id: ", update.Id)</code>

This code updates the field location with the value of the message variable for the document with ID 2 in the index test3.

Alternative Approach:

An alternative approach, which has been reported as unsuccessful, is:

<code class="go">update := client.Update().Index("test3").Type("user").Id("2").Script(elastic.NewScript("ctx._source.location = loc").Params(map[string]interface{}{"loc": message}).Lang("groovy"))
fmt.Println("updated id: ", update.Id)</code>

If you encounter any issues with this approach, the first example should provide a reliable solution for partial updates using Olivere/Elastic in Go with ElasticSearch.

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