By using AWS re:Post, you agree to the Terms of Use
/Can you use an array as a index key?/

Can you use an array as a index key?

0

Seeking clarification, the doc page (https://docs.aws.amazon.com/qldb/latest/developerguide/working.create.html) says:

"Indexes can only be created on a single top-level field. Composite, nested, unique, and function-based indexes are currently not supported."

So does that mean that you can only create an index on simple Ion values? I'd like to use a tuple/list of strings as a key, and while it'd be easy enough to generate a single string from the list, it'd be nice to avoid it if possible.

Thanks!

asked 2 years ago1 views
2 Answers
0

Hello TomCulliton, thanks for reaching out to us!

Yes, you can create an index on any Ion types, including Lists and Structs. However, the index lookup is only by equality of the Ion value regardless of the type of the Ion Value. For example, you can't find a value within an indexed List. Please let me know if this helps.

Thanks,
QLDB team

answered 2 years ago
0

Equality to the whole list is fine and exactly what I was looking for. Many thanks!

answered 2 years ago

You are not logged in. Log in to post an answer.

A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker.

Guidelines for Answering Questions