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. |