Correct answer - "--projection-expression" : To read data from a table, you use operations such
as GetItem, Query, or Scan. DynamoDB returns all of the item attributes by default. To get just
some, rather than all of the attributes, use a projection expression.
A projection expression is a string that identifies the attributes you want. To retrieve a single
attribute, specify its name. For multiple attributes, the names must be comma-separated.
Incorrect Answers:
"--filter-expression" - If you need to further refine the Query results, you can optionally
provide a filter expression. A filter expression determines which items within the Query results
should be returned to you. All of the other results are discarded. A filter expression is
applied after a Query finishes, but before the results are returned. Therefore, a Query will
consume the same amount of read capacity, regardless of whether a filter expression is present.
"--page-size" - You can use the --page-size option to specify that the AWS CLI request a smaller
number of items from each call to the AWS service. The CLI still retrieves the full list, but
performs a larger number of service API calls in the background and retrieves a smaller number
of items with each call.
"--max-items" - To include fewer items at a time in the AWS CLI output, use the --max-items
option. The AWS CLI still handles pagination with the service as described above, but prints out
only the number of items at a time that you specify.
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