Nesting Aggregates in Window Functions - Analytics Database - Teradata Vantage

SQL Functions, Expressions, and Predicates

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-01-12
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lifecycle
latest
Product Category
Teradata Vantageā„¢

Although you can nest aggregates in window functions, including the select list, HAVING, QUALIFY, and ORDER BY clauses, the HAVING clause can only contain aggregate function references because HAVING cannot contain nested syntax like RANK() OVER (ORDER BY SUM(x)).

Aggregate functions cannot be specified with Teradata-specific functions.

Example

The following query nests the SUM aggregate function within the RANK ordered analytical function in the select list:

SELECT state, city, SUM(sale), 
RANK() OVER (PARTITION BY state ORDER BY SUM(sale))
FROM T1
WHERE T1.cityID = T2.cityID
GROUP BY state, city
HAVING MAX(sale) > 10;