sys-foreign-key-columns-transact-sql.md

title	sys.foreign_key_columns (Transact-SQL) | Microsoft Docs
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ms.date	03/15/2017
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sys.foreign_key_columns (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-all-md]

Contains a row for each column, or set of columns, that comprise a foreign key.

Column name	Data type	Description
constraint_object_id	int	ID of the FOREIGN KEY constraint.
constraint_column_id	int	ID of the column, or set of columns, that comprise the FOREIGN KEY (1..n where n=number of columns).
parent_object_id	int	ID of the parent of the constraint, which is the referencing object.
parent_column_id	int	ID of the parent column, which is the referencing column.
referenced_object_id	int	ID of the referenced object, which has the candidate key.
referenced_column_id	int	ID of the referenced column (candidate key column).

Permissions

[!INCLUDEssCatViewPerm] For more information, see Metadata Visibility Configuration.

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)
Querying the SQL Server System Catalog FAQ