On 9/10/07, Roger Demetrescu <[EMAIL PROTECTED]> wrote:
>
> On 9/8/07, Lukasz Szybalski <[EMAIL PROTECTED]> wrote:
> >
> > On 9/7/07, Paul Johnston <[EMAIL PROTECTED]> wrote:
> > >
> > > Hi,
> > >
> > > >And if I wanted to select a year and group by year?
> > > >"select User.Year from User group by User.Year"
> > > > db.execute(select([User.Year]) ???
> > > >
> > > >
> > > Have a look at http://www.sqlalchemy.org/docs/04/sqlexpression.html
> > >
> > Ok.
> > Based on documentation.
> > I do:
> > import sqlalchemy
> >   s2=sqlalchemy.select([User.c.YEAR])
> > s3=s2.execute()
> >
> > Got all year fields. 1995,1995,1995,1996,1996......
> > Now I want to group so I get just one.
> >   s2=sqlalchemy.select([User.c.YEAR]).group_by(User.c.YEAR)
> > But when I execute, I get:
> > s3=s2.execute()
> >
> > Traceback (most recent call last):
> >   File "<console>", line 1, in ?
> > AttributeError: 'NoneType' object has no attribute 'execute'
> >
> > In docs they use conn.execute(s2)
> > Is this a different execute that is being called from somewhere else?
>
> I didn't read this thread from the beginning, but if you are using TG,
> probably you are using SA <= 0.3.10, which means you don't have
> generative select() constructs...
>
> So you'll need to modify your code to (not tested):
>
> s2=sqlalchemy.select([User.c.YEAR], group_by=[User.c.YEAR])
> s3=s2.execute()

That has worked.
Thanks.
Lucas

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