MSSQL ID generation is limited to integer PKs of the IDENTITY type, and they
work fine in 0.4 series. That wiki page should be updated.

It's most likely a case of the Table not knowing that the PK should be an
auto-increment type. Are you defining the table via an SA Table()
definition, or trying to autoload the definition via table reflection?


On Jan 11, 2008 5:23 PM, Dean Halford <[EMAIL PROTECTED]> wrote:

>
> thanks micheal - the only reason we went with 3.11 was the following
> statement on the wiki:
> "Currently (Aug 2007) the 0.4 branch has a number of problems with MS-
> SQL."
> http://www.sqlalchemy.org/trac/wiki/DatabaseNotes#MS-SQL
>
> I checked the logs and it does have to do with the MS-SQL ID
> generation, so I'll readup on that.
> --------------------------------------------------------
> 2008-01-11 14:19:31,292 INFO sqlalchemy.engine.base.Engine.0x..30
> SELECT shot.[skuId], shot.number, shot.name, shot.description, shot.
> [teamCategory], shot.comments, shot.props, shot.time, shot.talent,
> shot.source, shot.id, shot.now, shot.[rowNumber]
> FROM shot
> WHERE shot.id IS NULL
> ---------------------------------------------------------
>
> cheers
>
> On Jan 11, 1:46 pm, Michael Bayer <[EMAIL PROTECTED]> wrote:
> > On Jan 11, 2008, at 4:37 PM, Dean Halford wrote:
> >
> >
> >
> >
> >
> > > Thanks for the responses guys.  The PassiveDefault("") parameter did
> > > exactly what I wanted it to do - which was to exclude that column from
> > > the generated insert query so that MS SQL could handle those on it's
> > > own.
> >
> > > ... now to figure out why I am getting an unsubscriptable object type
> > > error from the operation:
> > > -----------------------------------
> > > ...
> > > File "c:\python24\lib\site-packages\sqlalchemy-0.3.11-py2.4.egg
> > > \sqlalchemy\orm\mapper.py", line 1255, in _postfetch
> > >    self.set_attr_by_column(obj, c, row[c])
> > > TypeError: unsubscriptable object
> > > -----------------------------------
> >
> > > the comments for the _postfetch method indicate that it is checking to
> > > see if 'PassiveDefaults' were fired off on the insert.  It looks the
> > > row[c] operation is breaking as the row object doesn't support []
> > > subscripting...   could be a bug?
> >
> > rows are subscriptable so that means its getting None back.   so its a
> > bug that its not handling that more gracefully...but also, should be
> > getting a row back.    you should see in your SQL logs that a SELECT
> > is being issued right after a series of INSERT/UPDATE statements for
> > that table - if the SELECT queries for a primary key of NULL that may
> > mean that the default-id-generation scheme in use is not working
> > (either not genning an ID or not telling the result about it
> > correctly)....i know on MS-SQL the default ID generation schemes are
> > quite complex.  we'll see what Rick says but its possible things would
> > work a whole lot better if you were using sqlalchemy 0.4.
> >
>

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