Case insensitive search on FieldNames not values

Elastic Stack Elasticsearch
1

Hi, I want to search a field. The fields, not field value, are either camel case, pascal case, lower case or upper case. When I do a search I don't know what case the field is.

What options do I have...
Make everything uppercase when indexing?
Include a lowercase insensitive when indexing?
Or when I search, can I set it to case insensitive

Just to be clear, I'm not talking about the values, just the field names

2

You can't set the field names to be case insensitive at query time. You will need to normalise the field names in you document when indexing so they use a consistent case and also use this consistent case when searching too.