Standard OLE DB Interfaces

Command Object

The Command object implementation does not support command processing. The implementation accommodates a limitation in ADO support for custom rowset properties. All of the command interface methods, except for those methods on ICommandProperties, return E_FAIL. Here are the Command object interfaces:

IColumnsInfo
ICommand ¹
ICommandPrepare
ICommandProperties
ICommandText ¹
IConvertType
ISupportErrorInfo

¹ The ICommand and ICommandText interfaces support the Cancel method for the OLAP Provider. This support is limited to MDX queries that are made asynchronously and with the Execute method.

Data Source Object

These interfaces are supported on the Data Source object:

IDBCreateSession
IDBInitialize
IDBProperties
IPersist
ISupportErrorInfo

Rowset Object

These interfaces are supported on the Rowset object with the following restrictions:

For the SAS/SHARE, IOM, and Base SAS providers, the IRowsetLocate, IRowset Change, and IRowsetUpdate interfaces are not supported on Rowset objects that are returned by Command objects. They are supported only on Rowset objects that are returned by IOpenRowset::OpenRowset.
For the SAS/SHARE and Base SAS providers, this same restriction is true for IRowsetIdentity.

IAccessor
IColumnsInfo
IConvertType
IRowset
IRowsetChange
IRowsetIdentity
IRowsetInfo
IRowsetLocate
IRowsetUpdate
ISupportErrorInfo

Session Object

These interfaces are supported on the Session object:

IDBCreateCommand

Note: IDBCreateCommand is present only to accommodate a limitation in ADO support for custom rowset properties. IDBCreateCommand methods return E_FAIL.
IDBSchemaRowset
IGetDataSource
IOpenRowset
ISessionProperties
ISupportErrorInfo
ITableDefinition

Standard OLE DB Interfaces

Command Object

Data Source Object

Rowset Object

Session Object

See Also