# Aggregate
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Specifies a transform that groups rows by chosen fields and computes the aggregated value by specified function.

## Contents
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 ** Aggs **   <a name="Glue-Type-Aggregate-Aggs"></a>
Specifies the aggregate functions to be performed on specified fields.   
Type: Array of [AggregateOperation](API_AggregateOperation.md) objects  
Array Members: Minimum number of 1 item. Maximum number of 30 items.  
Required: Yes

 ** Groups **   <a name="Glue-Type-Aggregate-Groups"></a>
Specifies the fields to group by.  
Type: Array of arrays of strings  
Pattern: `([\u0009\u000B\u000C\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF])*`   
Required: Yes

 ** Inputs **   <a name="Glue-Type-Aggregate-Inputs"></a>
Specifies the fields and rows to use as inputs for the aggregate transform.  
Type: Array of strings  
Array Members: Fixed number of 1 item.  
Pattern: `[A-Za-z0-9_-]*`   
Required: Yes

 ** Name **   <a name="Glue-Type-Aggregate-Name"></a>
The name of the transform node.  
Type: String  
Pattern: `([^\r\n])*`   
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/glue-2017-03-31/Aggregate) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/glue-2017-03-31/Aggregate) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/glue-2017-03-31/Aggregate)