Ok, I'll try to build this query in sql. thanks :)
Le lun. 13 mai 2019 à 17:43, James Fennell <jamespfenn...@gmail.com> a
écrit :
> I think Mike's suggestion was to construct the raw SQL string you want,
> then reverse engineer to get the correct SQL Alchemy code, which you can
> then use with your different models. For complicated SQL logic I think this
> is a good practice in general.
>
> You current question seems like a general SQL question rather than
> something specific to SQL Alchemy. After you've the SQL, we could discuss
> the reverse engineering.
>
> On Mon, May 13, 2019, 10:37 AM Scheck David <da...@sphax.it 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 :
>>
>> 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 <mike...@zzzcomputing.com> 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 <da...@sphax.it> 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
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>>>
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>>
>>
>> --
>>
>> With kindest regards,
>>
>>
>> *David SCHECK*
>>
>> PRESIDENT/DEVELOPER
>>
>> [image: Signature Logo Sphax Bleu-01.png]
>>
>> Phone: +32 4 87 86 70 12
>> Visit our website ! https://www.sphax.org
>>
>> --
>> 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
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> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
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> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
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*David SCHECK*
PRESIDENT/DEVELOPER
[image: Signature Logo Sphax Bleu-01.png]
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Visit our website ! https://www.sphax.org
--
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