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CloudTable.CreateIfNotExists 方法
定义
重要
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重载
CreateIfNotExists(TableRequestOptions, OperationContext, String, Nullable<Int32>, Nullable<Int32>)
如果表不存在,则创建表。
public virtual bool CreateIfNotExists (Microsoft.Azure.Cosmos.Table.TableRequestOptions requestOptions = default, Microsoft.Azure.Cosmos.Table.OperationContext operationContext = default, string serializedIndexingPolicy = default, int? throughput = default, int? defaultTimeToLive = default);
abstract member CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext * string * Nullable<int> * Nullable<int> -> bool
override this.CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext * string * Nullable<int> * Nullable<int> -> bool
Public Overridable Function CreateIfNotExists (Optional requestOptions As TableRequestOptions = Nothing, Optional operationContext As OperationContext = Nothing, Optional serializedIndexingPolicy As String = Nothing, Optional throughput As Nullable(Of Integer) = Nothing, Optional defaultTimeToLive As Nullable(Of Integer) = Nothing) As Boolean
参数
- requestOptions
- TableRequestOptions
一个 TableRequestOptions 对象,它指定请求的其他选项。
- operationContext
- OperationContext
一个 OperationContext 对象,它一个表示当前操作的上下文。
- serializedIndexingPolicy
- String
CosmosDB 表索引策略。
CosmosDB 表生存时间(以秒为单位)。 Null 表示 TTL 处于关闭状态,-1 等于 TTL 处于打开状态并无限期保留行,任何其他值设置 TTL。
返回
如果表已创建,则为 true
;否则为 false
。
注解
此 API 执行存在检查,因此需要列表权限。
适用于
CreateIfNotExists(IndexingMode, Nullable<Int32>, Nullable<Int32>)
如果表不存在,则创建表。
public virtual bool CreateIfNotExists (Microsoft.Azure.Cosmos.IndexingMode indexingMode, int? throughput = default, int? defaultTimeToLive = default);
abstract member CreateIfNotExists : Microsoft.Azure.Cosmos.IndexingMode * Nullable<int> * Nullable<int> -> bool
override this.CreateIfNotExists : Microsoft.Azure.Cosmos.IndexingMode * Nullable<int> * Nullable<int> -> bool
Public Overridable Function CreateIfNotExists (indexingMode As IndexingMode, Optional throughput As Nullable(Of Integer) = Nothing, Optional defaultTimeToLive As Nullable(Of Integer) = Nothing) As Boolean
参数
- indexingMode
- IndexingMode
CosmosDB 表索引模式
CosmosDB 表生存时间(以秒为单位)。 Null 表示 TTL 处于关闭状态,-1 等于 TTL 处于打开状态并无限期保留行,任何其他值设置 TTL。
返回
如果表已创建,则为 true
;否则为 false
。
注解
此 API 执行存在检查,因此需要列表权限。
适用于
CreateIfNotExists(TableRequestOptions, OperationContext, Nullable<IndexingMode>, Nullable<Int32>)
public virtual bool CreateIfNotExists (Microsoft.Azure.Cosmos.Table.TableRequestOptions requestOptions, Microsoft.Azure.Cosmos.Table.OperationContext operationContext, Microsoft.Azure.Cosmos.IndexingMode? indexingMode, int? throughput);
abstract member CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext * Nullable<Microsoft.Azure.Cosmos.IndexingMode> * Nullable<int> -> bool
override this.CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext * Nullable<Microsoft.Azure.Cosmos.IndexingMode> * Nullable<int> -> bool
Public Overridable Function CreateIfNotExists (requestOptions As TableRequestOptions, operationContext As OperationContext, indexingMode As Nullable(Of IndexingMode), throughput As Nullable(Of Integer)) As Boolean
参数
- requestOptions
- TableRequestOptions
- operationContext
- OperationContext
- indexingMode
- Nullable<IndexingMode>
返回
适用于
CreateIfNotExists(TableRequestOptions, OperationContext)
public virtual bool CreateIfNotExists (Microsoft.Azure.Cosmos.Table.TableRequestOptions requestOptions, Microsoft.Azure.Cosmos.Table.OperationContext operationContext);
abstract member CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext -> bool
override this.CreateIfNotExists : Microsoft.Azure.Cosmos.Table.TableRequestOptions * Microsoft.Azure.Cosmos.Table.OperationContext -> bool
Public Overridable Function CreateIfNotExists (requestOptions As TableRequestOptions, operationContext As OperationContext) As Boolean
参数
- requestOptions
- TableRequestOptions
- operationContext
- OperationContext
返回
适用于
CreateIfNotExists()
public virtual bool CreateIfNotExists ();
abstract member CreateIfNotExists : unit -> bool
override this.CreateIfNotExists : unit -> bool
Public Overridable Function CreateIfNotExists () As Boolean
返回
适用于
CreateIfNotExists(Nullable<IndexingMode>, Nullable<Int32>)
public virtual bool CreateIfNotExists (Microsoft.Azure.Cosmos.IndexingMode? indexingMode, int? throughput = default);
abstract member CreateIfNotExists : Nullable<Microsoft.Azure.Cosmos.IndexingMode> * Nullable<int> -> bool
override this.CreateIfNotExists : Nullable<Microsoft.Azure.Cosmos.IndexingMode> * Nullable<int> -> bool
Public Overridable Function CreateIfNotExists (indexingMode As Nullable(Of IndexingMode), Optional throughput As Nullable(Of Integer) = Nothing) As Boolean
参数
- indexingMode
- Nullable<IndexingMode>