TABLE_CONSTRAINTS (Transact-SQL)
Returns one row for each table 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 schema that contains the constraint. |
CONSTRAINT_NAME |
sysname |
Constraint name. |
TABLE_CATALOG |
nvarchar(128) |
Table qualifier. |
TABLE_SCHEMA |
nvarchar(128) |
Name of schema that contains the table. |
TABLE_NAME |
sysname |
Table name. |
CONSTRAINT_TYPE |
varchar(11) |
Type of constraint:
|
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. |
See Also
Reference
System Views (Transact-SQL)
Information Schema Views (Transact-SQL)
sys.objects (Transact-SQL)
sys.key_constraints (Transact-SQL)
sys.check_constraints (Transact-SQL)
sys.tables (Transact-SQL)
Other Resources
Querying the SQL Server System Catalog