sys-check-constraints-transact-sql.md

title	sys.check_constraints (Transact-SQL) | Microsoft Docs
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sys.check_constraints (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-asdb-xxxx-xxx-md]

Contains a row for each object that is a CHECK constraint, with sys.objects.type = 'C'.

Column name	Data type	Description
<Columns inherited from sys.objects>		For a list of columns that this view inherits, see sys.objects (Transact-SQL).
is_disabled	bit	CHECK constraint is disabled.
is_not_for_replication	bit	CHECK constraint was created with the NOT FOR REPLICATION option.
is_not_trusted	bit	CHECK constraint has not been verified by the system for all rows.
parent_column_id	int	0 indicates a table-level CHECK constraint. Non-zero value indicates that this is a column-level CHECK constraint defined on the column with the specified ID value.
definition	nvarchar(max)	SQL expression that defines this CHECK constraint.
uses_database_collation	bit	1 = The constraint definition depends on the default collation of the database for correct evaluation; otherwise, 0. Such a dependency prevents changing the database default collation.
is_system_named	bit	1 = Name was generated by system. 0 = Name was supplied by the user.

Permissions

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

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)