ChronicleRule Element (ADF)

Provides a location for defining one or more Transact-SQL statements that maintain data in event chronicle tables.

Syntaxe

<EventClasses>
    <EventClass>
        ...
        <ChronicleRule>

Element Characteristics

Element Relationships

Notes

If you are using event chronicle tables, you must define a chronicle rule. The chronicle rule contains the Transact-SQL queries that manipulate the data in the event chronicle tables.

Exemple

The following example shows a ChronicleRule element for creating an event chronicle rule named StockEventChronRule. This rule first inserts new stock data into the chronicle table, and then updates existing stock records in the chronicle table. The ActionTimeout value of P0DT00H05M00S gives the rule five minutes to complete successfully.

<ChronicleRule>
    <RuleName>StockEventChronRule</RuleName>
        <Action>
        -- Insert New Stock Symbols with Prices
        INSERT dbo.StockEventsChron (StockSymbol, StockPrice)
        SELECT e.StockSymbol, e.StockPrice
            FROM dbo.StockEvents AS e
            WHERE e.StockSymbol NOT IN 
                (SELECT StockSymbol FROM dbo.StockEventsChron);
        -- Update Existing Stock Symbols with New Prices
        UPDATE dbo.StockEventsChron
            SET StockPrice = e.StockPrice
            FROM dbo.StockEvents AS e 
            JOIN dbo.StockEventsChron AS c
                ON e.StockSymbol = c.StockSymbol
                WHERE e.StockPrice &gt; c.StockPrice;
        </Action>
    <ActionTimeout>P0DT00H05M00S</ActionTimeout>
</ChronicleRule>

Voir aussi

Référence

Application Definition File Reference

Autres ressources

Définition de chroniques pour une classe d'événements
Définition des règles de chronique d'événements
Mise à jour des instances et des applications

Aide et Informations

Assistance sur SQL Server 2005