PRIMARY_KEYS Rowset

OLE DB Programmer's Reference

GUID: DBSCHEMA_PRIMARY_KEYS

Number of restriction columns: 3

Restriction columns: TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME

Default sort order: TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME

Description: The PRIMARY_KEYS rowset identifies the primary key columns defined in the catalog by a given user. This schema rowset is built upon an SQL-92 schema view as a convenience to the non-SQL programmer and, if supported, must be synchronized with the related SQL-92 view (CONSTRAINT_COLUMN_USAGE).

Column name Type indicator Description
TABLE_CATALOG DBTYPE_WSTR Catalog name in which the table is defined. NULL if the provider does not support catalogs.
TABLE_SCHEMA DBTYPE_WSTR Unqualified schema name in which the table is defined. NULL if the provider does not support schemas.
TABLE_NAME DBTYPE_WSTR Table name.
COLUMN_NAME DBTYPE_WSTR Primary key column name. This column, together with the COLUMN_GUID and COLUMN_PROPID columns, forms the column ID. One or more of these columns will be NULL, depending on which elements of the DBID structure the provider uses.
COLUMN_GUID DBTYPE_GUID Primary key column GUID.
COLUMN_PROPID DBTYPE_UI4 Primary key column property ID.
ORDINAL DBTYPE_UI4 The order of the column names (and GUIDs and property IDs) in the key.
PK_NAME DBTYPE_WSTR Primary key name. NULL if the provider does not support primary key constraints. This column is not returned by 1.x providers.

1998-2001 Microsoft Corporation. All rights reserved.



Microsoft Ole Db 2.0 Programmer's Reference and Data Access SDK
Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)
ISBN: 0735605904
EAN: 2147483647
Year: 1998
Pages: 1083

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