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NULL Predicate (null_predicate) Locate the document in its SAP Library structure

By specifying a NULL predicates (null_predicate), you can test whether the value is a NULL value.

Syntax

<null_predicate> ::= <expression> IS [NOT] NULL

Explanation

The truth content of a NULL predicate is either true or false.

 

Result of the x IS NULL function

x is a NULL value

true

x is a special NULL value

false

 

x IS NOT NULL has the same result as NOT(x IS NULL).

 

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