On Apr 4, 2007, at 2:32 PM, Chris Hartjes wrote:

>
> On 4/4/07, John David Anderson (_psychic_) <[EMAIL PROTECTED]>  
> wrote:
>>
>> (Self joins need not always be HABTM)
>>
>> -- John
>
> That's cool and everything, but can someone provide me with an example
> of when a self-join is needed?  I'm curious.

A threaded message board: a Message may have many child Messages  
linked to it.

Told you it was cool.

-- John

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