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NullProcessing Element (ASSL)

  • Článek

Defines how null values are processed.

Syntax

  
<DataItem>  
   ...  
   <NullProcessing>...</NullProcessing>  
   ...  
</DataItem>

Element Characteristics

Characteristic Description
Data type and length String (enumeration)
Default value Automatic
Cardinality 0-1: Optional element that can occur once and only once.

Element Relationships

Relationship Element
Parent element DataItem
Child elements None

Remarks

The value of this element is limited to one of the strings listed in the following table.

Value Description
Preserve Preserves the null value.

Note: This value is not supported for distinct count measures.
Error Raises a null key error. The value of NullKeyNotAllowed determines how the instance reacts to the error.

Note: This value is not supported for measures.
UnknownMember Generates an unknown member and raises a null conversion error. The value of NullKeyConvertedToUnknown determines how the instance reacts to the error.

Note: This value is not supported for columns associated with measures.
ZeroOrBlank Converts the null value to zero (for numeric data items) or a blank string (for string data items).

Note: This value provides compatibility with previous versions of Analysis Services.
Automatic Uses the default processing appropriate for the element:

ZeroOrBlank for OLAP data items.

UnknownMember for data mining data items.

The enumeration that corresponds to the allowed values for NullProcessing in the Analysis Management Objects (AMO) object model is NullProcessing.

See Also

Properties (ASSL)