check-constraints-transact-sql.md

title	CHECK_CONSTRAINTS (Transact-SQL)
description	CHECK_CONSTRAINTS (Transact-SQL)
author	markingmyname
ms.author	maghan
ms.date	03/15/2017
ms.service	sql
ms.subservice	system-objects
ms.topic	reference
ms.custom	ignite-2025
f1_keywords	CHECK_CONSTRAINTS CHECK_CONSTRAINTS_TSQL
helpviewer_keywords	CHECK_CONSTRAINTS view INFORMATION_SCHEMA.CHECK_CONSTRAINTS view
dev_langs	TSQL
monikerRange	>=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric || =fabric-sqldb

CHECK_CONSTRAINTS (Transact-SQL)

[!INCLUDE sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw-fabricsqldb]

Returns one row for each CHECK constraint in the current database. This information schema view returns information about the objects to which the current user has permissions.

To retrieve information from these views, specify the fully qualified name of INFORMATION_SCHEMA.view_name.

Column name	Data type	Description
CONSTRAINT_CATALOG	nvarchar(128)	Constraint qualifier.
CONSTRAINT_SCHEMA	nvarchar(128)	Name of the schema to which the constraint belongs. Important: Don't use INFORMATION_SCHEMA views to determine the schema of an object. INFORMATION_SCHEMA views only represent a subset of the metadata of an object. The only reliable way to find the schema of an object is to query the sys.objects catalog view.
CONSTRAINT_NAME	sysname	Constraint name.
CHECK_CLAUSE	nvarchar(4000)	Actual text of the [!INCLUDEtsql] definition statement.

See Also

• System Views (Transact-SQL)
• Information Schema Views (Transact-SQL)
• sys.check_constraints (Transact-SQL)
• sys.objects (Transact-SQL)