DynamoDB supports an UpdateItem operation that modifies an existing or creates a new item. The UpdateItem accepts an UpdateExpression that dictates which operations will occur on the specified item. In this post, we’ll explore how to perform multiple operations including within a clause/keyword and with multiple clauses/keywords. What is an update expression An update expression supports four keywords: SET (modify or add item attributes) REMOVE (deleting attributes from an item) ADD (updati...
