OleDbSchemaGuid::Columns Field
Returns the columns of tables (including views) defined in the catalog that is accessible to a given user.
Assembly: System.Data (in System.Data.dll)
Columns maps to the OLE DB COLUMNS rowset. Unless otherwise specified, restriction columns are returned in the following order.
Restriction column | CLR data type | Description |
|---|---|---|
TABLE_CATALOG | string | Catalog name. A null value if the provider does not support catalogs. |
TABLE_SCHEMA | string | Unqualified schema name. A null value if the provider does not support schemas. |
TABLE_NAME | string | Table name. The column returned cannot contain a null value. |
COLUMN_NAME | string | The name of the column; this might not be unique. If this cannot be determined, a null value is returned. This column, together with the COLUMN_GUID and COLUMN_PROPID columns, forms the column ID. One or more of these columns will be a null value, depending on which elements of the DBID structure the provider uses. (DBID is a formal structure serialized into the COLUMN_NAME column of the COLUMN_DOMAIN_USAGE rowset.) If possible, the resulting column ID should be persistent. However, some providers do not support persistent identifiers for columns. The column ID of a base table should be invariant under views. |
Available since 1.1