OleDbSchemaGuid.Procedure_Columns 字段
定义
返回有关由过程返回的行集合的列的信息。Returns information about the columns of rowsets returned by procedures.
public: static initonly Guid Procedure_Columns;
public static readonly Guid Procedure_Columns;
staticval mutable Procedure_Columns : Guid
Public Shared ReadOnly Procedure_Columns As Guid
字段值
注解
Procedure_Columns 映射到 OLE DB PROCEDURE_COLUMNS 行集。Procedure_Columns maps to the OLE DB PROCEDURE_COLUMNS rowset. 除非另外指定,否则将按以下顺序返回限制列。Unless otherwise specified, restriction columns are returned in the following order.
| 限制列Restriction column | CLR 数据类型CLR data type | 说明Description |
|---|---|---|
| PROCEDURE_CATALOGPROCEDURE_CATALOG | string |
目录名称。Catalog name. 如果提供程序不支持目录,则为 null 值。A null value if the provider does not support catalogs. |
| PROCEDURE_SCHEMAPROCEDURE_SCHEMA | string |
非限定的架构名称。Unqualified schema name. 如果提供程序不支持架构,则为 null 值。A null value if the provider does not support schemas. |
| PROCEDURE_NAMEPROCEDURE_NAME | string |
过程名。Procedure name. |
| COLUMN_NAMECOLUMN_NAME | string |
列的名称;这可能不是唯一的。The name of the column; this might not be unique. 如果这无法确定,则返回 NULL 值。If this cannot be determined, a null value is returned. 此列与 COLUMN_GUID 和 COLUMN_PROPID 列一起构成列 ID。This column, together with the COLUMN_GUID and COLUMN_PROPID columns, forms the column ID. 其中的一个或多个列将为 null 值,具体取决于提供程序使用的 DBID 结构的元素。One or more of these columns will be a null value, depending on which elements of the DBID structure the provider uses. |
备注
Procedure_ColumnsMDAC 版本2.7 附带的任何 OLE DB 提供程序都不支持该架构。The Procedure_Columns schema is not supported by any OLE DB providers that ship in MDAC version 2.7. 请参阅数据库文档,以确定是否可以通过查询数据库的系统表来检索此架构信息。Refer to your database documentation to determine whether you can retrieve this schema information by querying the system tables of your database.