table_constraints
| PostgreSQL 9.4.17 Documentation | |||
|---|---|---|---|
| Prev | Up | Chapter 34. The Information Schema | Next |
The view table_constraints contains all constraints belonging to tables that the current user owns or has some privilege other than SELECT on.
Table 34-48. table_constraints Columns
| Name | Data Type | Description |
|---|---|---|
| constraint_catalog | sql_identifier | Name of the database that contains the constraint (always the current database) |
| constraint_schema | sql_identifier | Name of the schema that contains the constraint |
| constraint_name | sql_identifier | Name of the constraint |
| table_catalog | sql_identifier | Name of the database that contains the table (always the current database) |
| table_schema | sql_identifier | Name of the schema that contains the table |
| table_name | sql_identifier | Name of the table |
| constraint_type | character_data | Type of the constraint: CHECK , FOREIGN KEY , PRIMARY KEY , or UNIQUE |
| is_deferrable | yes_or_no | YES if the constraint is deferrable, NO if not |
| initially_deferred | yes_or_no | YES if the constraint is deferrable and initially deferred, NO if not |