# IcebergSortOrder
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Defines the sort order for data within an Iceberg table. Sorting data can improve query performance by enabling more efficient data skipping.

## Contents
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 ** fields **   <a name="AmazonS3-Type-s3Buckets_IcebergSortOrder-fields"></a>
The list of sort fields that define how data is sorted within files. Each field specifies a source field, sort direction, and null ordering. This field is required if `writeOrder` is provided.  
Type: Array of [IcebergSortField](API_s3Buckets_IcebergSortField.md) objects  
Required: Yes

 ** order-id **   <a name="AmazonS3-Type-s3Buckets_IcebergSortOrder-order-id"></a>
The unique identifier for this sort order. If not specified, defaults to `1`. The order ID is used by Apache Iceberg to track sort order evolution.  
Type: Integer  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/s3tables-2018-05-10/IcebergSortOrder) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/s3tables-2018-05-10/IcebergSortOrder) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/s3tables-2018-05-10/IcebergSortOrder)