Mysql issue plz

Question

Hi guys, I am trying to delete the user. my User gets deleted
successfully.
my userid is realted to table2 which has refernce of userid.
I mean like i have 3 records and 2 records are related to
userid 2.
now i delete userid 2, i want that also in should reflect
that thinh in table 2.
I want it should update the table 2 userd value to null where
userid was 2.
i am trying to do it in 2 queries but it is now working.
no err is tthrown,
first query make update using in operator (i think my query
structure is wrong)
update userid
set userid = null
where userid in ('form.userid')
then i make th delete query?
DELETE FROM users
WHERE
userid = <cfqueryparam cfsqltype="cf_sql_numeric"
value="#trim(arguments.userid)#">
can u please tell me how this structure can be achieved.
well i am no good at procedures. if this can be done through
procedures, can anybody tell how can it done..
Cheers

Answer 1

If you had a normalized db, the userid would be a foreign key
in the 2nd table. You would not be able to set it to null. You
would have to delete the records. Plus, you would have to delete
the related records before you delete the ones in the users table.
An alternative approach is to delete nothing and simply
de-activate the user.