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    NullEqualityRule

    Variable describing what to do when checking for equality of Null values.

    Declaration

    Source position: variants.pp line 283

    var
  NullEqualityRule: TNullCompareRule = (ncrError,ncrStrict,ncrLoose) = ncrLoose;

    Description

    NullEqualityRule is checked when the system needs to compare the equality of variants with Null values (operations opCmpEq, opCmpNe). Check TNullCompareRule for a list of allowed values. The default is ncrLoose.

    For determining the order (less than, greater than etc.) see NullMagnitudeRule.

    See also

    Name Description
    TNullCompareRule Enumeration describing how to handle Null values when comparing variants.
    NullMagnitudeRule Variable describing what to do when checking for order of Null values.