**This page is only for existing customers of the Amazon Glacier service using Vaults and the original REST API from 2012.**

If you're looking for archival storage solutions, we recommend using the Amazon Glacier storage classes in Amazon S3, S3 Glacier Instant Retrieval, S3 Glacier Flexible Retrieval, and S3 Glacier Deep Archive. To learn more about these storage options, see [Amazon Glacier storage classes](https://www.amazonaws.cn/s3/storage-classes/glacier/).

Amazon Glacier (original standalone vault-based service) is no longer accepting new customers. Amazon Glacier is a standalone service with its own APIs that stores data in vaults and is distinct from Amazon S3 and the Amazon S3 Glacier storage classes. Your existing data will remain secure and accessible in Amazon Glacier indefinitely. No migration is required. For low-cost, long-term archival storage, Amazon recommends the [Amazon S3 Glacier storage classes](https://www.amazonaws.cn/s3/storage-classes/glacier/), which deliver a superior customer experience with S3 bucket-based APIs, full Amazon Web Services Region availability, lower costs, and Amazon service integration. If you want enhanced capabilities, consider migrating to Amazon S3 Glacier storage classes by using our [Amazon Solutions Guidance for transferring data from Amazon Glacier vaults to Amazon S3 Glacier storage classes](https://www.amazonaws.cn/solutions/guidance/data-transfer-from-amazon-s3-glacier-vaults-to-amazon-s3/).

# SelectParameters


Contains information about the parameters used for the select.

## Contents


**Expression**  
The expression that is used to select the object. The expression must not exceed the quota of 128,000 characters.  
*Type*: String  
*Required*: yes

**ExpressionType**  
The type of the provided expression, for example `SQL`.  
*Valid Values*: `SQL`  
*Type*: String  
*Required*: yes

**InputSerialization**  
Describes the serialization format of the object in the select.  
*Type*: [InputSerialization](api-InputSerialization.md) object  
*Required*: no

**OutputSerialization**  
Describes how the results of the select job are serialized.  
*Required*: no  
*Type*: [OutputSerialization](api-OutputSerialization.md) object

## More Info


 
+ [Initiate Job (POST jobs)](api-initiate-job-post.md)