NULLIF Expression Examples | Teradata Vantage - Examples - 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„¢

The following examples show queries on the following table:

   CREATE TABLE Membership
      (FullName CHARACTER(39)
      ,Age SMALLINT
      ,Code CHARACTER(4) );

Example: Querying with the ANSI-Compliant Form

Here is the ANSI-compliant form of the Teradata SQL NULLIFZERO(Age) function, and is more versatile.

   SELECT FullName, NULLIF (Age,0) FROM Membership;

Example: Blank Spaces

In the following query, blanks indicate no value.

   SELECT FullName, NULLIF (Code, '    ') FROM Membership;

Example: Querying for NULLIF in an Expression with an Arithmetic Operator

The following example uses NULLIF in an expression with an arithmetic operator.

   SELECT NULLIF(Age,0) * 100;