The view check_constraints contains all check
constraints, either defined on a table or on a domain, that are
owned by the current user. (The owner of the table or domain is
the owner of the constraint.)
Table 31-3. check_constraints Columns
| Name | Data Type | Description |
|---|
| constraint_catalog | sql_identifier | Name of the database containing the constraint (always the current database) |
| constraint_schema | sql_identifier | Name of the schema containing the constraint |
| constraint_name | sql_identifier | Name of the constraint |
| check_clause | character_data | The check expression of the check constraint |