Nesting Aggregates in Window Functions - Teradata Vantage

Teradata® VantageCloud Lake

Deployment
VantageCloud
Edition
Lake
Product
Teradata Vantage
Published
January 2023
Language
English (United States)
Last Update
2024-04-03
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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;