Possible Result Overflow with SELECT Sum - 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„¢

When using this function, the result can create an overflow when the data type and format are not in sync. For a column defined as:

Salary Decimal(15,2) Format '$ZZZ,ZZ9.99'

The following query:

SELECT SUM (Salary) FROM Employee;

causes an overflow because the decimal operand and the format are not in sync.

To avoid possible overflows, explicitly specify the format for decimal sum to specify a format large enough to accommodate the decimal sum resultant data type.

SELECT Sum(Salary) (format '$Z,ZZZ,ZZZ,ZZ9.99) FROM Employee;