On Mon, May 13, 2019 at 10:37 AM Scheck David <[email protected]> wrote:
> the problem is that I can't use SQL for this because this is a mixins that
> I use for several objects (tables) because they all have this status
> structure... yes it's quite difficult to do :
>
I don't know what it is you want to do so if you could illustrate the SQL
that resembles what you want, I'd have some idea. If you are trying to
build a Query object, then you are working with SQL and you'd need to
understand the structure you're looking for.
>
> right now I'm on this stage, but still don't work
> self.session.query(Object).outerjoin(ObjectStatus).outerjoin(Status)\
> .group_by(Object).with_entities(Object,
> func.max(Status.datum).label("status_datum")).subquery()
>
> self.session.query(Object).join((sub, sub.c.id == Status.id))\
> .filter(sub.c.statustype_id > 50)
>
> Le lun. 13 mai 2019 à 16:26, Mike Bayer <[email protected]> a
> écrit :
>
>> Hi -
>>
>> I was hoping someone could jump in on this.
>>
>> do you know the SQL that you want to emit? E.g. plain SQL string. I
>> can help you do that part.
>>
>>
>> On Mon, May 13, 2019 at 9:11 AM Scheck David <[email protected]> wrote:
>> >
>> > I think I'm near but I can't finish :
>> >
>> > for all the structure : https://dpaste.de/fek5#L
>> >
>> > and here my query :
>> >
>> > self.session.query(Object).outerjoin(ObjectStatus).outerjoin(Status)\
>> > .group_by(Object).with_entities(Object,
>> func.max(Status.datum).label("status_datum")).subquery()
>> >
>> > self.session.query(Object).join((sub, sub.c.id == Status.id))\
>> > .filter(sub.c.statustype_id > 50)
>> >
>> > but status type not reachable.
>> >
>> >
>> > --
>> > SQLAlchemy -
>> > The Python SQL Toolkit and Object Relational Mapper
>> >
>> > http://www.sqlalchemy.org/
>> >
>> > To post example code, please provide an MCVE: Minimal, Complete, and
>> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
>> description.
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>> SQLAlchemy -
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>>
>> http://www.sqlalchemy.org/
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>
>
> --
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>
>
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> SQLAlchemy -
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>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
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--
SQLAlchemy -
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http://www.sqlalchemy.org/
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