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
ft:locale
en-US
ft:lastEdition
2024-01-12
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obm1628111499646.ditamap
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qkf1628213546010.ditaval
dita:id
kby1472250656485
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;