Bruce Momjian wrote:
>
> Is there a TODO item here?
Yes. It should read:
"Disallow TRUNCATE TABLE on tables that are parents of a referential
integrity constraint"
In PostgreSQL current sources I can do:
CREATE TABLE employees (employeeid INTEGER PRIMARY KEY NOT NULL
);
CREATE TABLE salaries ( employeeid INTEGER NOT NULL REFERENCES employees(employeeid),salary FLOAT NOT NULL
);
INSERT INTO employees VALUES (1);
INSERT INTO salaries VALUES (1, 45000);
TRUNCATE TABLE employees;
SELECT * FROM salaries;
employeeid | salary
------------+-------- 1 | 45000
(1 row)
In Oracle, the following occurs:
CREATE TABLE employees (employeeid INTEGER NOT NULL PRIMARY KEY
);
CREATE TABLE salaries (employeeid INTEGER NOT NULL REFERENCES employees(employeeid),salary FLOAT NOT NULL
);
INSERT INTO employees VALUES (1);
INSERT INTO salaries VALUES (1, 40000);
TRUNCATE TABLE employees;
TRUNCATE TABLE employees; *
ERROR at line 1:
ORA-02266: unique/primary keys in table referenced by enabled
foreign keys
Mike Mascari
mascarm@mascari.com
