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Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.
The view check_constraints contains all check constraints, either defined on a table or on a domain, that are owned by a currently enabled role. (The owner of the table or domain is the owner of the constraint.)
Table 33-7. 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 |