IndexSqlSchema Element for SubscriptionClass (ADF)

Contains Transact-SQL statements for creating one or more indexes on a subscription table.

语法

<SubscriptionClasses>
    <SubscriptionClass>
        ...
        <IndexSqlSchema>

Element Characteristics

Characteristic	Description
Data type	None.
Default value	None.
Occurrence	Optional once per SubscriptionClass element.
Updates	Can be added and deleted when updating the application.

Element Relationships

Relationship	Elements
Parent element	SubscriptionClass Element (ADF)
Child elements	SqlStatement Element for SubscriptionClass/IndexSqlSchema (ADF)

备注

If you add or delete an IndexSqlSchema element, updating the application re-creates the subscription class to which it corresponds. SQL Server 2005 Notification Services renames existing subscription tables by appending Old to the name and then creates new subscription tables. Existing subscription table indexes remain unchanged.

If you want to copy data between the old and new subscription tables, you must do so after updating the application. For more information, see 更新应用程序.

示例

The following example shows how to create an index named StockSubIndex on the SubscriberId field of the StockSubscriptions table in the application database.

<IndexSqlSchema>
    <SqlStatement>
    CREATE INDEX StockSubIndex
    ON StockSubscriptions (SubscriberId)
    </SqlStatement>
</IndexSqlSchema>

请参阅

参考

Application Definition File Reference

其他资源

为订阅类定义索引
更新实例和应用程序

帮助和信息

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