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CONSTRAINT_COLUMN_USAGE Rowset

GUID: DBSCHEMA_CONSTRAINT_COLUMN_USAGE

Number of restriction columns: 7

Restriction columns: TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME, CONSTRAINT_CATALOG, CONSTRAINT_SCHEMA, CONSTRAINT_NAME

Default sort order: TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME, COLUMN_GUID, COLUMN_PROPID, CONSTRAINT_CATALOG, CONSTRAINT_SCHEMA, CONSTRAINT_NAME

Description: The CONSTRAINT_COLUMN_USAGE rowset identifies the columns used by referential constraints, unique constraints, check constraints, and assertions and that are defined in the catalog and owned by a given user.

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

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

Column GUID.

COLUMN_PROPID

DBTYPE_UI4

Column property ID.

CONSTRAINT_CATALOG

DBTYPE_WSTR

Catalog name. NULL if the provider does not support catalogs.

CONSTRAINT_SCHEMA

DBTYPE_WSTR

Unqualified schema name. NULL if the provider does not support schemas.

CONSTRAINT_NAME

DBTYPE_WSTR

Constraint name.

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