OpenSearch have a "lookup function"?

OpenSearch
1

Does OpenSearch have a lookup function?

Does OpenSearch have a feature similar to “Splunk’s lookup” or “Elastic’s Lookup Rutieme Field”?

The reason is that I want to compare the index field and the list form field.

*If the question is problematic in this community, please point it out. The survey didn’t go well, so I was at a loss and asked a question here. I’m sorry for troubling you.

2

Not directly, at least not until this will be implemented: [RFC] Schema on Reads · Issue #1133 · opensearch-project/OpenSearch · GitHub

That said, you can use script fields to emulate that kind of functionality.