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amazon-web-servicesnosqlamazon-dynamodb
johnnyodonnell
johnnyodonnell

Reputation: 2036

Is it possible to write to a DynamoDB Global Secondary Index?

For example, would it possible to put or update an item using the Global Secondary Index?

Upvotes: 1

Views: 100

Answers (1)

Mike Dinescu
Mike Dinescu

Reputation: 55720

The simple answer is no - it's not possible to put or update an item using an index.

But this is a really interesting question and I think it helps to think about why it is not possible. First, an index is a projection of the source data, and the index is not necessarily a bijection between the original data set and the projected set. Said differently, the index could contain duplicates records, so how would you handle that for writes? I suppose you could make an argument that the system could do a bulk update for all source records but that is not always correct.

Upvotes: 1

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