sys.sysforeignkeys (Transact-SQL)

THIS TOPIC APPLIES TO:yesSQL Server (starting with 2008)noAzure SQL DatabasenoAzure SQL Data Warehouse noParallel Data Warehouse

Contains information about the FOREIGN KEY constraints that are in the definitions of tables in the database.


This SQL Server 2000 system table is included as a view for backward compatibility. We recommend that you use the current SQL Server system views instead. To find the equivalent system view or views, see Mapping System Tables to System Views (Transact-SQL). This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.

Column name Data type Description
constid int ID of the FOREIGN KEY constraint.
fkeyid int Object ID of the table with the FOREIGN KEY constraint.
rkeyid int Object ID of the table referenced in the FOREIGN KEY constraint.
fkey smallint ID of the referencing column.
rkey smallint ID of the referenced column.
keyno smallint Position of the column in the reference column list.

See Also

Mapping System Tables to System Views (Transact-SQL)
Compatibility Views (Transact-SQL)