DEFAULT Function Comparison Operators - Analytics Database - Teradata Vantage

SQL Data Manipulation Language

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
2024-04-05
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lifecycle
latest
Product Category
Teradata Vantage™

Following existing comparison rules, a condition with a DEFAULT function used with comparison operators other than IS NULL or IS NOT NULL is unknown if the DEFAULT function evaluates to null.

A condition other than IS NULL or IS NOT NULL with a DEFAULT function compared with a null evaluates to unknown.

IF a DEFAULT function is used with … THEN the comparison is …
IS NULL
  • TRUE if the default is null
  • Else it is FALSE
IS NOT NULL
  • FALSE if the default is null
  • Else it is TRUE

For more information about the DEFAULT function, see Teradata Vantage™ - SQL Functions, Expressions, and Predicates, B035-1145.