How to update an item in Dynamodb of type String Set (SS)?

Question

I have created a attribute of type String Set. When I create the Item and assign an attribute of type SS everything works. But when I try to update this attribute, the data type

Answer 1

As of September 2015, there is a createSet function in the DocumentClient that you can use for this.

UPDATE - added example

I've modified your example code to use this function:

qw = new AWS.DynamoDB.DocumentClient();

var params = {
  TableName : "myTable",
  Key: {
    "id": somekey
  },
  UpdateExpression: "set ssvar= :arrp",
  ExpressionAttributeValues: {
     ":arrp": qw.createSet([ "test", "test2" ])
  }
};

qw.update (etc.)