# AggFunction


The definition of an Agg function.

## Contents


**Note**  
In the following list, the required parameters are described first.

 ** Aggregation **   <a name="QS-Type-AggFunction-Aggregation"></a>
The aggregation of an Agg function.  
Type: String  
Valid Values: `SUM | MIN | MAX | COUNT | AVERAGE | DISTINCT_COUNT | STDEV | STDEVP | VAR | VARP | PERCENTILE | MEDIAN | PTD_SUM | PTD_MIN | PTD_MAX | PTD_COUNT | PTD_DISTINCT_COUNT | PTD_AVERAGE | COLUMN | CUSTOM`   
Required: No

 ** AggregationFunctionParameters **   <a name="QS-Type-AggFunction-AggregationFunctionParameters"></a>
The aggregation parameters for an Agg function.  
Type: String to string map  
Key Length Constraints: Minimum length of 1. Maximum length of 256.  
Value Length Constraints: Maximum length of 1024.  
Required: No

 ** Period **   <a name="QS-Type-AggFunction-Period"></a>
The period of an Agg function.  
Type: String  
Valid Values: `SECOND | MINUTE | HOUR | DAY | WEEK | MONTH | QUARTER | YEAR`   
Required: No

 ** PeriodField **   <a name="QS-Type-AggFunction-PeriodField"></a>
The period field for an Agg function.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

## See Also


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/quicksight-2018-04-01/AggFunction) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/quicksight-2018-04-01/AggFunction) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/quicksight-2018-04-01/AggFunction)