KURTOSIS Function | Teradata Vantage - 17.10 - KURTOSIS - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

Returns the kurtosis of the distribution of value_expression.

This function returns the REAL data type.

To invoke the time series version of this function, use the GROUP BY TIME clause. For more information, see Teradata Vantage™ - Time Series Tables and Operations, B035-1208.


Kurtosis is the fourth moment of the distribution of the standardized (z) values. It is a measure of the outlier (rare, extreme observation) character of the distribution as compared with the normal, Gaussian distribution.

The normal distribution has a kurtosis of 0.

Positive kurtosis indicates that the distribution is more outlier-prone than the normal distribution, while negative kurtosis indicates that the distribution is less outlier-prone than the normal distribution.


The equation for computing KURTOSIS is defined as follows:


This variable … Represents …
x value_expression