RFC: Detaching user name from email, LDAP and Single-Signon

[Joel Peshkin]

Gervase Markham wrote:

> Christian Robottom Reis wrote:
>
>> This field name is something like "other_id" or "external_auth_id"? So
>> the "external" authentication mechanism can use it to map the external
>> id to a Bugzilla id?
>>
>> Somehow I think this fits in another table, separate from profiles, but
>> perhaps I'm being impractical.
>
>
> Well... either everyone has one, or no-one has one. In the common 
> case, no-one has one. So you could argue that an external table would 
> be best.
>
> Gerv
> -

Is that logic even true for a VARCHAR that takes 2 bytes for a 
zero-length entry?