后续版本的 Microsoft SQL Server 将删除该功能。请避免在新的开发工作中使用该功能,并着手修改当前还在使用该功能的应用程序。
The EnumCandidateKeys method returns a QueryResults object that enumerates the user tables of a Microsoft SQL Server database and the constraints on those tables that could define primary keys.
语法
object
.EnumCandidateKeys( )
as 
QueryResults
Parts
- object
 Expression that evaluates to an object in the Applies To list.
Prototype (C/C++)
HRESULT EnumCandidateKeys(
LPSQLDMOQUERYRESULTS* ppResults);
Returns
A QueryResults object that contains one result set defined by these columns.
| Column | Data type | Description | 
|---|---|---|
| candidate_table | nvarchar(262) | SQL Server table name. | 
| candidate_key | nvarchar(129) | Name of an existing UNIQUE or PRIMARY KEY constraint. |