PRIMARY_KEYS Rowset

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.