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CHECK_CONSTRAINTS (Transact-SQL)

Updated: 17 July 2006

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.

CONSTRAINT_NAME

sysname

Constraint name.

CHECK_CLAUSE

nvarchar(4000)

Actual text of the Transact-SQL definition statement.

SQL Server 2005 differs from SQL Server 2000 in the way it decodes and stores SQL expressions in the catalog metadata. The semantics of the decoded expression are equivalent to the original text; however, there are no syntactic guarantees. For example, white spaces are removed from the decoded expression. For more information, see, Behavior Changes to Database Engine Features in SQL Server 2005.

Release History

17 July 2006

New content:
  • In the CHECK_CLAUSE column, added content about how SQL expressions are stored in SQL Server 2005.

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