title: Dynamodb: Update an attribute used as sort key
body: <p>What would happen if an attribute used as sortKey has its value changed?</p>
  
  <p>For instance, suppose I have a table products, I would use the ID as the partitionkey and the status of the product as sortkey, the status of the product is stored as an attribute of the product also, if I update the status of the product, Dynamodb will update the sortKey automatically?</p>