Purpose
The USER_CONSTRAINTS view displays constraints on all tables owned by the current user.
Applicability
This topic applies only to OceanBase Database Enterprise Edition. OceanBase Database Community Edition provides only the MySQL mode.
Related views
ALL_CONSTRAINTSDBA_CONSTRAINTS
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| OWNER | VARCHAR2(128) | NO | The owner of the constraint. |
| CONSTRAINT_NAME | VARCHAR2(128) | NO | The name of the constraint. |
| CONSTRAINT_TYPE | VARCHAR2(1) | NO | The type of the constraint. At present, only the NORMAL type is supported. |
| TABLE_NAME | VARCHAR2(128) | NO | The name of the table containing the constraint. |
| SEARCH_CONDITION | VARCHAR2(4000) | NO | The search condition text for a check constraint. |
| R_OWNER | VARCHAR2(128) | NO | The owner of the referenced constraint. |
| R_CONSTRAINT_NAME | VARCHAR2(128) | NO | The name of the referenced constraint. |
| DELETE_RULE | VARCHAR2(9) | NO | The cascading deletion rule for foreign key constraints. |
| STATUS | VARCHAR2(8) | NO | Indicates whether the constraint is enabled or disabled. Valid values: ENABLE and DISABLE. |
| DEFERRABLE | VARCHAR2(14) | NO | Indicates whether the constraint is deferrable. |
| DEFERRED | VARCHAR2(9) | NO | Indicates whether the constraint is deferred or immediate. |
| VALIDATED | VARCHAR2(13) | NO | Indicates whether the constraint is validated. |
| GENERATED | VARCHAR2(14) | NO | Indicates whether the name of the constraint is user-generated or system-generated. |
| BAD | VARCHAR2(3) | NO | At present, this column is not supported and is NULL by default. |
| RELY | VARCHAR2(4) | NO | Indicates whether the constraint is in the RELY state. |
| LAST_CHANGE | DATE | NO | The time when the constraint was last enabled or disabled. |
| INDEX_OWNER | VARCHAR2(128) | NO | The owner of the index on the constraint. |
| INDEX_NAME | VARCHAR2(128) | NO | The name of the index on the constraint. |
| INVALID | VARCHAR2(7) | NO | Indicates whether the constraint is invalid. |
| VIEW_RELATED | VARCHAR2(14) | NO | Indicates whether the constraint is created on a view. |
