AWS CloudFormation
User Guide (API Version 2010-05-15)

Amazon DynamoDB Table Projection

Attributes that are copied (projected) from the source table into the index. These attributes are additions to the primary key attributes and index key attributes, which are automatically projected.

Projection is a property of the GlobalSecondaryIndex and LocalSecondaryIndex property types.



{ "NonKeyAttributes" : [ String, ... ], "ProjectionType" : String }


NonKeyAttributes: - String ProjectionType: String


For more information about each property, including constraints, see Projection in the Amazon DynamoDB API Reference.


The non-key attribute names that are projected into the index.

For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes in determining the total. This limit does not apply for secondary indexes with a ProjectionType of KEYS_ONLY or ALL.

Required: No

Type: List of String values


The set of attributes that are projected into the index:


Only the index and primary keys are projected into the index.


Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.


All of the table attributes are projected into the index.

Required: Yes

Type: String

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