referential_constraints
note
This view does not apply to the available features in StarRocks.
referential_constraints
contains all referential (foreign key) constraints.
The following fields are provided in referential_constraints
:
Field | Description |
---|---|
CONSTRAINT_CATALOG | The name of the catalog to which the constraint belongs. This value is always def . |
CONSTRAINT_SCHEMA | The name of the database to which the constraint belongs. |
CONSTRAINT_NAME | The name of the constraint. |
UNIQUE_CONSTRAINT_CATALOG | The name of the catalog containing the unique constraint that the constraint references. This value is always def . |
UNIQUE_CONSTRAINT_SCHEMA | The name of the schema containing the unique constraint that the constraint references. |
UNIQUE_CONSTRAINT_NAME | The name of the unique constraint that the constraint references. |
MATCH_OPTION | The value of the constraint MATCH attribute. The only valid value at this time is NONE . |
UPDATE_RULE | The value of the constraint ON UPDATE attribute. Valid values: CASCADE , SET NULL , SET DEFAULT , RESTRICT , and NO ACTION . |
DELETE_RULE | The value of the constraint ON DELETE attribute. Valid values: CASCADE , SET NULL , SET DEFAULT , RESTRICT , and NO ACTION . |
TABLE_NAME | The name of the table. This value is the same as in the TABLE_CONSTRAINTS table. |
REFERENCED_TABLE_NAME | The name of the table referenced by the constraint. |