I'll answer what I can from a quick review of the codebase.

On Thursday, May 29, 2014 12:36:39 PM UTC-5, jpk wrote:
>
> Yeah, I came across that as well, but it didn't work on 1.6.  I cloned and 
> debugged it up until I got the exact same error as the paste in my first 
> message. :(
>
> So, a few questions:
>
>    - Am I correct in my analysis that the syncdb command alone is 
>    generating the table creation sql that includes the constraint redshift is 
>    barfing on?
>
> No, syncdb (or in 1.7+ migrate) eventually calls the correct db backend to 
generate the sql. You can see from the 
code<https://github.com/django/django/blob/stable/1.6.x/django/core/management/commands/syncdb.py>that
 there is no SQL there, just calls to the backend sql generation (In 
particular look at line 
96<https://github.com/django/django/blob/stable/1.6.x/django/core/management/commands/syncdb.py#L96>
)

>
>    - If I were to patch the syncdb command code, is it reasonable to 
>    consult the database backend for settings related to which constraints are 
>    allowed/not?
>
> I would not change the sync code. A better path would probably be to start 
with the postgres backend and make the changes necessary for redshift (I 
assume that is what the django-redshift project started to do)

>
>    - Does it make more sense for the database backend code to do the 
>    table creation instead of syncdb?  (As in, db backends provide might an 
>    abstracted create table method that syncdb could just call instead of 
>    building its own sql.) 
>
> I know more than I did a day ago, but I'm still not super hip on how db 
> backends are implemented and how the rest of the framework interacts with 
> them.  So if the stuff I'm asking doesn't make sense then do put me on the 
> right path. :)
>
> Thanks!
> jpk
>
 
Kirby

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