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DOMAIN_CONSTRAINTS (Transact-SQL)

Returns one row for each alias data type in the current database that has a rule bound to it by using sp_bindrule and that can be accessed by the current user.

To retrieve information from this view, specify the fully qualified name of INFORMATION_SCHEMA.DOMAIN_CONSTRAINTS.

Column name

Data type

Description

CONSTRAINT_CATALOG

nvarchar(128)

Database in which the rule exists.

CONSTRAINT_SCHEMA

nvarchar(128)

Name of schema that contains the constraint.

Important noteImportant
Do not use INFORMATION_SCHEMA views to determine the schema of an object. The only reliable way to find the schema of an object is to query the sys.objects catalog view or use the OBJECT_SCHEMA_NAME function.

CONSTRAINT_NAME

sysname

Rule name.

DOMAIN_CATALOG

nvarchar(128)

Database in which the alias data type exists.

DOMAIN_SCHEMA

nvarchar(128)

Name of schema that contains the alias data type.

Important noteImportant
Do not use INFORMATION_SCHEMA views to determine the schema of a data type. The only reliable way to find the schema of a type is to use the TYPEPROPERTY function.

DOMAIN_NAME

sysname

Alias data type.

IS_DEFERRABLE

varchar(2)

Specifies whether constraint checking is deferrable. Always returns NO.

INITIALLY_DEFERRED

varchar(2)

Specifies whether constraint checking is at first deferred. Always returns NO.

Examples

The following example returns all alias data types in the database that have a rule bound to it.

USE AdventureWorks;
GO

SELECT *
FROM INFORMATION_SCHEMA.DOMAIN_CONSTRAINTS;