Python Boto3 AWS DynamoDB从表中获取项目而无排序键

Question

I am trying to update an item from my DynamoDb table from a AWS Lambda function and I am getting the following error:

"errorMessage": "An error occurred (ValidationException) when calling the UpdateItem operation: The provided key element does not match the schema",

I have not defined a sort key when defining my table, and my partition key is named 'pipeId', and I have used the following code:

dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('mytable')

response = table.update_item(
    Key={
        'pipeId': pipe_id
        },
    UpdateExpression="set hookId = :r",
    ExpressionAttributeValues={
            ':r': hook_id
        },
    ReturnValues="UPDATED_NEW"
)

Isn't possible to get or update an item without previously setting a sort key ? or am I doing something wrong here ?

Answer 1

I have found the solution.

The problem was that my primary key is defined as number and I was inserting it as String, like "3219"; but it doesn't convert automatically.