FieldType Element for EventClass/Schema/Field (ADF)

Specifies the SQL Server data type of the event field.

Sintassi

<EventClasses>
    <EventClass>
        ...
        <Schema>
            <Field>
                ...
                <FieldType>

Element Characteristics

Characteristic	Description
Data type	string, between 1 and 255 characters in length.
Default value	None.
Occurrence	Required once per Field element.
Updates	Can be modified, but not added or deleted, when updating the application.

Element Relationships

Relationship	Elements
Parent element	Field Element for EventClass/Schema (ADF)
Child elements	None.

Osservazioni

FieldType values must conform to SQL Server data types. The following data types are supported by Notification Services:

bigint	float	real	tinyint
binary	int	smalldatetime	uniqueidentifier
bit	money	smallint	varbinary
char	nchar	smallmoney	varchar
datetime	nvarchar	sql_variant	xml
decimal	numeric

The text, ntext, and image data types are not supported because they cannot be used as values for parameters and variables in stored procedures. In addition, the timestamp data type is not supported. For more information about SQL Server data types, see Tipi di dati (Motore di database).

If using the xml data type with the XSLT content formatter, the content formatter might attempt to transform the XML data. To preserve the XML markup, set the content formatter's DisableEscaping argument to false.

Importante:
If you update a FieldType element, updating the application deletes and re-creates the event class to which it corresponds. This includes dropping and re-creating the SQL Server tables and indexes used by this event class. Any data existing in the original event class tables is permanently deleted.

Esempio

The following example shows how to specify a event field data type of char(10), which is 10 bytes of non-Unicode character data.

<FieldType>char(10)</FieldType>

Vedere anche

Riferimento

Application Definition File Reference

Altre risorse

Definizione delle proprietà di una classe di evento principale
Aggiornamento di istanze e applicazioni

Guida in linea e informazioni

Assistenza su SQL Server 2005