Re: TRUNCATE question

Added to TODO.  Thanks.


> 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
> 

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