title

sys.check_constraints (Transact-SQL)

description

sys.check_constraints (Transact-SQL)

author

VanMSFT

ms.author

vanto

ms.date

06/28/2017

ms.service

sql

ms.subservice

system-objects

ms.topic

reference

ms.custom

ignite-2025

f1_keywords

sys.check_constraints

sys.check_constraints_TSQL

helpviewer_keywords

sys.check_constraints catalog view

dev_langs

TSQL

monikerRange

=azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

sys.check_constraints (Transact-SQL)

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