4D v16

NULLIF

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4D v16

4D - SQL Reference

Functions

NULLIF



	Command NULLIF NULLIF (arithmetic_expression, arithmetic_expression)

Beschreibung

The NULLIF function returns NULL if the first arithmetic_expression is equal to the second arithmetic_expression. Otherwise, it will return the value of the first arithmetic_expression. The twoexpressions must be comparable.

Example

This example returns NULL if the total of the invoice is 0:

NULLIF(INVOICE_TOTAL,0);

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