[development] Pathauto scaleability - path column in node / user table

[Chris Johnson]

Earl Miles wrote:
> Karthik wrote:
>>> Not all aliases in the url_alias table are nodes, and hence we cannot
>>> have a "nid" column.
>>
>> The id column can be an index with default 0 for non-nodal rows or
>> something similar.
>>
>> -K
> But this also leaves out 'user' and any othe rnon-node object that may 
> want URLs of this nature.
> 

So?  Adding an alias column to the node table leaves out all the 
non-node objects, too.  It's 6 of one, half a dozen of the other, i.e a 
wash or very little difference.  Both implementations can be made to 
work, and they both waste space in database tables under most circumstances.