Thank-you Mike, that is perfect. I now feel silly I didn't realize that it
wasn't a regular tuple, but also very happy that it is the KeyedTuple :)
On Monday, 30 December 2019 18:11:47 UTC-8, Mike Bayer wrote:
>
>
>
> On Mon, Dec 30, 2019, at 6:18 PM, Laura Wilby wrote:
>
> I would like to be able to do something like this ...
>
> >>> test = session.query(T1, T2).first()
> >>> test
>
> ( 't1': <T1 object>, 't2': <T2 object>)
>
> I've been looking in the documentation for a way to accomplish this or
> something similar, but haven't been able to find anything.
>
> Thanks so much for taking a look at my question!
>
>
> if you run session.query(T1, T2), the result you'd get back is currently
> the KeyedTuple object. it's a tuple, which you can refer to it by key,
> however, if T1 and T2 are mapped classes, the names of the keys would be
> "T1" and "T2", which are the names of the mapped classes.
>
> If these were column expressions, you'd use label() to change their names,
> e.g. some_col.label("my_column"), however for ORM mapped classes, right now
> you can use aliased() to achieve this:
>
> from sqlalchemy.orm import aliased
>
> t1 = aliased(T1, name="t1")
> t2 = aliased(T2, name="t2")
> session.query(t1, t2).filter(t1.foo == 'bar').filter (etc)
>
> those names will be applied to the named tuple result you get back. In
> the next major release, version 1.4, the KeyedTuple class is likely being
> replaced with a new object called "Row" but the user-facing behavior will
> be the same.
>
>
>
>
>
>
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