Andrey Zhakov wrote:
> --- On Tue, 28 Oct 2008, Brian Aker <[EMAIL PROTECTED]> wrote:
>> On Oct 28, 2008, at 3:30 PM, Jay Pipes wrote:
>> 
>>> Also, Roy is absolutely correct about virtual being a
>> property of a
>>> column, not a type.  I'm sure it was implemented
>> this way because it
>>> was too difficult to do a more elegant way, but the point
>> is a good
>>> one. :)
>> 
>> Internal types vs return types is  a mess. Tack on to this 
>> translation types...
>> 
> 
> The implementation difficulties Jay mentioned were storing the new
> column information in frm files. The backward compatibility of the
> frm files was/is a requirement for MySQL (for which the original vcol
> code was written). Is it so for Drizzle *now*? If not, then extending
> the frm file format might be a way to go...

Actually - even better than that, we're replacing frm altogether. Brian
has been working on this and it's not complete yet, but once it is,
we'll have a protobuf-based frm replacement.

The protobuf code is already in the trunk, btw, in
drizzled/serialize/table.proto if you want to take a look at it.

Monty

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