Wow, you're quick one (I edited my last reply meanwhile, you may have missed it).

I would like to ask for something like this (in my case) :

DELETE FROM usertable WHERE login = 'icemm' CASCADE

So that no traces of user information are left in database.
No, changing data to meaningless doesn't qualify as deleting, sorry.
As a matter of fact, as users, he/she does have every right to demand privacy laws to be respected - this includes removal of said data when certain agreement expires (user no longer subscribes certain service, therefore his/her data no longer needs to be processed).

Thanks for understanding.

regards
MM

OP doesn't want profile to be DEACTIVATED. He/she wants to have it DELETED permanently. As many here apparently.

Basically something like:

DELETE * FROM user WHERE login = 'something' CASCADE

So that no traces of user any information are left in database.
No, changing data to meaningless doesn't qualify as deleting.
As a matter of fact, as users, he have every right to demand privacy laws to be respected - this includes removal of said data.