Get - Amazon DynamoDB
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Get

Specifies an item and related attribute values to retrieve in a TransactGetItem object.

Contents

Note

In the following list, the required parameters are described first.

Key

A map of attribute names to AttributeValue objects that specifies the primary key of the item to retrieve.

Type: String to AttributeValue object map

Key Length Constraints: Maximum length of 65535.

Required: Yes

TableName

The name of the table from which to retrieve the specified item. You can also provide the Amazon Resource Name (ARN) of the table in this parameter.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Required: Yes

ExpressionAttributeNames

One or more substitution tokens for attribute names in the ProjectionExpression parameter.

Type: String to string map

Value Length Constraints: Maximum length of 65535.

Required: No

ProjectionExpression

A string that identifies one or more attributes of the specified item to retrieve from the table. The attributes in the expression must be separated by commas. If no attribute names are specified, then all attributes of the specified item are returned. If any of the requested attributes are not found, they do not appear in the result.

Type: String

Required: No

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: