Updating an attribute in a single query with DynamoDB data mapper - A step-by-step guide!

When working with the AWS CLI for DynamoDB, it is possible to update an attribute in one query without modifying the rest of the item. A guide on how to do this can be found here:

However, when attempting to achieve the same task using dynamodb-data-mapper, it seems that two queries are required based on the example provided here: https://github.com/awslabs/dynamodb-data-mapper-js#update

The question arises whether there is a way to accomplish the updating of an attribute in one query using dynamodb-data-mapper.

Answer №1

To resolve this issue, one can utilize the executeUpdateExpression method:

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