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sys.check_constraints (Transact-SQL)

Contains a row for each object that is a CHECK constraint, with sys.objects.type = 'C'.

Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database.

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.

The visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.

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