title: "CHECK_CONSTRAINTS (Transact-SQL) | Microsoft Docs" ms.custom: "" ms.date: "03/15/2017" ms.prod: "sql" ms.prod_service: "database-engine, sql-database, sql-data-warehouse, pdw" ms.service: "" ms.component: "system-information-schema-views" ms.reviewer: "" ms.suite: "sql" ms.technology:
- "database-engine" ms.tgt_pltfrm: "" ms.topic: "language-reference" f1_keywords:
- "CHECK_CONSTRAINTS"
- "CHECK_CONSTRAINTS_TSQL" dev_langs:
- "TSQL" helpviewer_keywords:
- "CHECK_CONSTRAINTS view"
- "INFORMATION_SCHEMA.CHECK_CONSTRAINTS view" ms.assetid: e9577fd2-c349-4dff-874c-9e57d2e5a3ec caps.latest.revision: 42 author: "edmacauley" ms.author: "edmaca" manager: "craigg" monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest || >= sql-server-2016 || = sqlallproducts-allversions"
[!INCLUDEtsql-appliesto-ss2008-all-md]
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 ** Do not use INFORMATION_SCHEMA views to determine the schema of an object. The only reliable way to find the schema of a 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. |
System Views (Transact-SQL)
Information Schema Views (Transact-SQL)
sys.check_constraints (Transact-SQL)
sys.objects (Transact-SQL)