Select operation returns a set of attributes for ItemNames
that match the select expression. Select is similar to the standard SQL
SELECT statement.
The total size of the response cannot exceed 1 MB in total size. Amazon SimpleDB
automatically adjusts the number of items returned per page to enforce this limit.
For example, if the client asks to retrieve 2500 items, but each individual item is
10 kB in size, the system returns 100 items and an appropriate NextToken
so the client can access the next page of results.
For information on how to construct select expressions, see Using Select to Create Amazon SimpleDB Queries in the Developer Guide.
Inheritance Hierarchy
Amazon.Runtime.AmazonWebServiceRequest
Amazon.SimpleDB.AmazonSimpleDBRequest
Amazon.SimpleDB.Model.SelectRequest
Namespace: Amazon.SimpleDB.Model
Assembly: AWSSDK.dll
Version: (assembly version)
Syntax
public class SelectRequest : AmazonSimpleDBRequest IRequestEvents
The SelectRequest type exposes the following members
Constructors
| Name | Description | |
|---|---|---|
|
SelectRequest() | Empty constructor used to set properties independently even when a simple constructor is available |
|
|
SelectRequest(string) | Instantiates SelectRequest with the parameterized properties |
|
|
SelectRequest(string, bool) | Instantiates SelectRequest with the parameterized properties |
Properties
| Name | Type | Description | |
|---|---|---|---|
|
|
ConsistentRead | System.Boolean |
Gets and sets the property ConsistentRead. Determines whether or not strong consistency
should be enforced when data is read from SimpleDB. If true, any data
previously written to SimpleDB will be returned. Otherwise, results will be consistent
eventually, and the client may not see data that was written immediately before your
read.
|
|
|
NextToken | System.String |
Gets and sets the property NextToken. A string informing Amazon SimpleDB where to
start the next list of ItemNames.
|
|
|
SelectExpression | System.String | Gets and sets the property SelectExpression. The expression used to query the domain. |
Version Information
.NET Framework:
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8
.NET for Windows Phone:
Supported in: Windows Phone 8.1, Windows Phone 8