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NullEqualityRule

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

Declaration

Source position: variants.pp line 276

var
  NullEqualityRule : TNullCompareRule = 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
NullMagnitudeRule Variable describing what to do when checking for order of Null values
TNullCompareRule Enumeration describing how to handle Null values when comparing variants.
TNullCompareRule Enumeration describing how to handle Null values when comparing variants.