On Mar 7, 2013, at 2:12 PM, Jason <ja...@deadtreepages.com> wrote:

> 
> 
> On Thursday, March 7, 2013 1:40:46 PM UTC-5, Michael Bayer wrote:
> Can you pass along more specifics here?  I don't see where this named tuple 
> is being created.  It's true that the ARRAY type by default doesn't know how 
> deep it should be unwrapping arrays, if you pass the "dimensions" argument 
> then it will be fixed.   But it's not clear why you didn't see this issue in 
> 0.7 as well, perhaps we check for a wider range of array/tuple types at this 
> point but I don't recall.
> 
> 
> 
> A namedtuple is returned by Psycopg2 directly (using its register_composite 
> mechanism). The result processing changed in this commit: 
> https://bitbucket.org/sqlalchemy/sqlalchemy/commits/0ba8b4fd402f1c187b80310fc838dcdea27e0af8,
>  so I will take a look to see if I can figure out what causes the new 
> behaviour. I'm guessing that it sees the namedtuple instance and figures that 
> it is a tuple instance so it can be converted into a list.


yeah.  if you set the ARRAY with the number of expected dimensions (likely "1" 
here) it shouldn't do any of that.


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