On May 26, 2011, at 5:03 PM, Israel Ben Guilherme Fonseca wrote:
> I saw that, but I'm not using a subquery in the from clause. Maybe I wasn't
> clear enough. Example:
>
> outeruser = aliased(User)
> inneruser = aliased(User)
>
> innerselect = session.query(inneruser.id).filter(inneruser.id ==
> outeruser.id).subquery()
>
> At this point I already have a problem, the generated from clause is
> something like:
>
> from user as user_2, user as user_1
>
> I didnt want the other user_2, because the filter statement is actually
> referencing the user of the outerselect:
>
> outerselect = session.query(outeruser).filter(outeruser.id == innerselect)
>
> I expected that the innerselect referenced the id of the outer select.
oh then you're looking for correlation:
innerselect = session.query(inneruser.id).filter(inneruser.id ==
outeruser.id).correlate(outeruser)
outerselect = session.query(outeruser).filter(outeruser.id ==
innerselect.as_scalar())
for some reason the Query is disabling auto-correlation upon subquery(),
.statement or as_scalar(). Sort of wish I had noticed that before releasing
0.7. Will add a ticket to possibly change that default for 0.8, see you in a
year.
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