DirectQueryUsage 枚举
Specifies the current DirectQuery usage of the partition.
命名空间： Microsoft.AnalysisServices
程序集： Microsoft.AnalysisServices（在 Microsoft.AnalysisServices.dll 中）
语法
声明
Public Enumeration DirectQueryUsage
用法
Dim instance As DirectQueryUsage
public enum DirectQueryUsage
public enum class DirectQueryUsage
type DirectQueryUsage
public enum DirectQueryUsage
成员
| 成员名称 | 说明 | |
|---|---|---|
| DirectQueryOnly | Indicates that queries on the partition should use only the relational data source. | |
| InMemoryOnly | Indicates that queries on the partition should use only the in-memory data store. | |
| InMemoryWithDirectQuery | Indicates that queries against the model can use either the xVelocity in-memory analytics engine (VertiPaq) cache, or the relational data store. The in-memory data store is preferred if both are available. |
注释
Only one partition can be enabled for DirectQuery access at a time. To use a partition in Direct Query mode, the storage mode of the model must have been previously changed to enable DirectQuery mode. For more information, see 分区和 DirectQuery 模式（SSAS 表格）.