NON-NULL operator.

C# | Visual Basic | Visual C++ |
public static readonly FilterCompare.FilterCompare..::FilterCompareOp IS_NOT_NULL
Public Shared ReadOnly IS_NOT_NULL As FilterCompare..::FilterCompareOp
public: static initonly FilterCompare..::FilterCompareOp^ IS_NOT_NULL

Determines if the fieldName is null. The
val parameter is ignored.