Bugs item #1643845, was opened at 2007-01-24 21:43
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Category: SQL/Core
Group: SQL CVS Head
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Romulo Goncalves (romulog)
Assigned to: Niels Nes (nielsnes)
Summary: Delete primary keys

Initial Comment:
In this moment it is possible to delete values from a table with primary key 
which have foreign keys.

Here is an example to show the bug:



create table t1(id int, name varchar(1024));
alter table t1 add constraint id_p primary key(id);

create table t2(id_f int, age int, foreign key(id_f) references t1(id));
alter table t2 add constraint age_p primary key(age);

As you can see t2 has a foreign key (f_id) to the primary key in t1(id).

I executed the following queries:

[EMAIL PROTECTED] test]$ mclient
sql>insert into t1 values(1,'romulo');
[ 1 ]
sql>insert into t2 values(1,33);
[ 1 ]
sql>insert into t2 values(2,33);
MAPI = [EMAIL PROTECTED]:50000
QUERY = insert into t2 values(2,33);
ERROR = !SQLException:assert:INSERT INTO: PRIMARY KEY constraint 't2.age_p' 
violated
sql>

Until here no problem. However...

sql>delete from t1 where id = 1;

As you will see the operation is executed without sending an error message.

if you select from t1 you can see the t1 status:

sql>select * from t1;
% sys.t1,       sys.t1 # table_name
% id,   name # name
% int,  varchar # type
% 1,    6 # length
sql>


Regards,
Romulo

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