Delete all items (clear) in a DynamoDB table using bash

clearTable.sh

#!/bin/bash

TABLE_NAME=TableName
KEY=id

aws dynamodb scan --table-name $TABLE_NAME --attributes-to-get "$KEY" --query "Items[].id.S" --output text | tr "\t" "\n" | xargs -t -I keyvalue aws dynamodb delete-item --table-name $TABLE_NAME --key '{"id": {"S": "keyvalue"}}'

Is there a way I can delete all items with different sort keys but the same PK?

That should be doable. Starting from @OtterFlip's work you'll want to replace the "dynamodb scan" with "dynamodb query" and add a "--key-condition-expression" to specify the value of your PK. Check out the docs for details on that.