SqlStatement Element for EventClass/Chronicles/Chronicle/SqlSchema (ADF)

Contains a Transact-SQL statement for an event chronicle table.

Sintassi

<EventClasses>
    <EventClass>
        ...
        <Chronicles>
            <Chronicle>
                    ...
                    <SqlSchema>
                        <SqlStatement>

Element Characteristics

Characteristic	Description
Data type	string, between 0 and 100,000 characters in length.
Default value	None.
Occurrence	Optional once or more per SqlSchema element.
Updates	Can be added, deleted, and modified when updating the application.

Element Relationships

Relationship	Elements
Parent element	SqlSchema Element for EventClass/Chronicles/Chronicle (ADF)
Child elements	None.

Osservazioni

Use Transact-SQL statements to create the event chronicle table used to store supplemental event data.

When using a chronicle you should include one SqlStatement element that drops or renames the chronicle table if it already exists and one SqlStatement element that re-creates the chronicle table. If you do not drop or rename an existing chronicle table, you will receive an "object exists" error when you update the application. For an example, see SqlSchema Element for EventClass/Chronicles/Chronicle (ADF).

You may also want to have SqlStatement elements for indexes.

Esempio

The following example shows a SqlStatement element that drops the event chronicle table StockEventChron if it exists.

<SqlStatement>
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES
    WHERE TABLE_NAME = 'StockEventsChron'
        AND TABLE_SCHEMA = 'dbo')
    DROP TABLE dbo.StockEventsChron;
</SqlStatement>

Vedere anche

Riferimento

Application Definition File Reference

Altre risorse

Definizione di tabelle della cronologia degli eventi
Aggiornamento di istanze e applicazioni

Guida in linea e informazioni

Assistenza su SQL Server 2005