# Better way to convert the object field to nested type field
**URL:** https://discuss.elastic.co/t/better-way-to-convert-the-object-field-to-nested-type-field/263026
**Category:** Elasticsearch
**Created:** [February 2, 2021, 6:14pm UTC](https://discuss.elastic.co/t/better-way-to-convert-the-object-field-to-nested-type-field/263026 "2021-02-02T18:14:08Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Prabaharan\_Kathiresa](https://discuss.elastic.co/u/Prabaharan_Kathiresa)
#### Post date: [February 2, 2021, 6:14pm UTC](https://discuss.elastic.co/t/better-way-to-convert-the-object-field-to-nested-type-field/263026/1 "2021-02-02T18:14:08Z")
Hi Team
We have an index with object field, we are planning to improve the object field into nested type (array of objects).
ie.
> {
> "name": "Adam",
> "car" : {
> "name": "Maruthi",
> "modelyear": "2005"
> }
> }
we are trying to store the documents from the above one to below one
> {
> "name": "ABC",
> "car" : [
> {
> "name": "Maruthi",
> "modelyear": "2005"
> },
> {
> "name": "HONDA",
> "modelyear": "2008"
> }
> }
My Question is
1. if I do the search query with car.name="Maruthi" will return both documents? or one with nested type will return.
2. what should be the better way to update the existing index mapping? I see articles saying elastic will not support updating the existing index mapping.
My elastic server version is 6.8.5.
Team, any suggestions or any feedback on the question.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 2, 2021, 6:14pm UTC](https://discuss.elastic.co/t/better-way-to-convert-the-object-field-to-nested-type-field/263026/2 "2021-03-02T18:14:22Z")
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