NULLIF Expression | Teradata Vantage - 17.10 - NULLIF Expression - Advanced SQL Engine - Teradata Database

Returns NULL if its arguments are equal. Otherwise, it returns its first argument, scalar_expression_1.

NULLIF is a shorthand expression for the following full CASE expression:

   CASE 
    WHEN  scalar_expression_1=scalar_expression_2  
    THEN NULL
    ELSE  scalar_expression_1  
   END

Default Title

The default title for a NULLIF expression appears as:

<CASE expression>