USER_CONSTRAINTS v16
The USER_CONSTRAINTS view provides information about all constraints placed on tables that are owned by the current user.
| Name | Type | Description |
|---|---|---|
owner | TEXT | Name of the owner of the constraint. |
schema_name | TEXT | Name of the schema in which the constraint belongs. |
constraint_name | TEXT | Name of the constraint. |
constraint_type | TEXT | The constraint type. Possible values are: C – check constraint; F – foreign key constraint; P – primary key constraint; U – unique key constraint; R – referential integrity constraint; V – constraint on a view; O – with read-only, on a view. |
table_name | TEXT | Name of the table to which the constraint belongs. |
search_condition | TEXT | Search condition that applies to a check constraint. |
r_owner | TEXT | Owner of a table referenced by a referential constraint. |
r_constraint_name | TEXT | Name of the constraint definition for a referenced table. |
delete_rule | TEXT | The delete rule for a referential constraint. Possible values are: C – cascade; R - restrict; N – no action. |
deferrable | BOOLEAN | Specified if the constraint is deferrable (T or F). |
deferred | BOOLEAN | Specifies if the constraint was deferred (T or F). |
index_owner | TEXT | User name of the index owner. |
index_name | TEXT | Name of the index. |
constraint_def | TEXT | Definition of the constraint. |