The 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, even if you ask to
retrieve 2500 items, but each individual item is 10 kB in size, the system returns 100 items and an appropriate next
token so you can get the next page of results.
Operations that run longer than 5 seconds return a time-out error response or a partial or empty result set. Partial
and empty result sets contains a next token which allow you to continue the operation from where it left off.
Responses larger than one megabyte return a partial result set.
Your application should not excessively retry queries that return RequestTimeout errors. If you receive too many
RequestTimeout errors, reduce the complexity of your query expression.
When designing your application, keep in mind that Amazon SimpleDB does not guarantee how attributes are ordered in
the returned response.
Declaration Syntax| C# |
public class SelectRequest : SDBRequest
Members| All Members | Constructors | Methods | Properties | ||
| Icon | Member | Description |
|---|---|---|
 | SelectRequest()()()() | Initializes a new instance of the SelectRequest class |
 | ConsistentRead |
Gets and sets the ConsistentRead property.
If set to true, this flag ensures that the most recently written data is
returned.
|
| Equals(Object) | (Inherited from Object.) |
| GetHashCode()()()() | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType()()()() | Gets the type of the current instance. (Inherited from Object.) |
| IsSetConsistentRead()()()() |
Checks if ConsistentRead property is set
|
| IsSetNextToken()()()() |
Checks if NextToken property is set
|
| IsSetSelectExpression()()()() |
Checks if SelectExpression property is set
|
| NextToken |
Gets and sets the NextToken property.
String that tells Amazon SimpleDB where to start the next list of item names.
|
| SelectExpression |
Gets and sets the SelectExpression property.
This section describes Select, a function that takes query expressions similar to the standard SQL SELECT statement.
See http://docs.amazonwebservices.com/AmazonSimpleDB/latest/DeveloperGuide/UsingSelect.html for more information
on building expressions.
|
| ToString()()()() | Returns a string that represents the current object. (Inherited from Object.) |
| WithConsistentRead(Boolean) | Obsolete.
Sets the ConsistentRead property
|
| WithNextToken(String) | Obsolete.
Sets the NextToken property
|
| WithSelectExpression(String) | Obsolete.
Sets the SelectExpression property
|
Inheritance Hierarchy| Object | ||
 | SDBRequest | |
| SelectRequest | |