quot;The unique() method must be invoked on this Result, "
sqlalchemy.exc.InvalidRequestError: The unique() method must be invoked on this
Result, as it contains results that include joined eager loads against
collections
среда, 24 августа 2022 г. в 16:53:26 UTC+3, Mike Bayer:
>
>
> On Wed,
23 августа 2022 г. в 22:34:23 UTC+3, Mike Bayer:
>
>
> On Tue, Aug 23, 2022, at 3:00 PM, Evgenii wrote:
>
> Thanks a lot!
> I used “vectorized” for sqlalchemy.orm.Session.refresh method and mean
> that it would be nice to use:
>
> session.refresh(instances_list)
>
21:04:05 UTC+3, Mike Bayer:
>
>
> On Tue, Aug 23, 2022, at 1:50 PM, Evgenii wrote:
>
> Hi there!
>
>
> Please help me to understand:
> I want to make two equal queries, that sends real queries to database each
> time:
>
>
> session.query(Instrument
Hi there!
Please help me to understand:
I want to make two equal queries, that sends real queries to database each
time:
session.query(InstrumentTable).get(instr_id)
session.query(InstrumentTable).get(instr_id)
The problem is that second query returns instance from identity_map.
I know how
Yes, it works
пятница, 24 июня 2022 г. в 17:58:46 UTC+3, Evgenii:
> Sure, I can
>
> пятница, 24 июня 2022 г. в 17:06:39 UTC+3, Mike Bayer:
>
>> if you can test this patch and confirm it reads your old pickle format, I
>> can merge it and release 1.4.39
>>
>
t
> https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-f8b03063d70397a8f275287ed2c8f2e6
>
> . this seemed to be enough of an edge case that I didn't attempt to
> reconcile the old broken format.
>
> On Fri, Jun 24, 2022, at 9:16 AM, Evgenii wrote:
>
&g
Hello!
We found bug in SA version `1.4.38` during deserialization.
How to reproduce:
Serialize any ORM object with pickle using environment with any SA
compatible version `1.4.n` except `1.4.38` in , ex. `1.4.31`:
```
pickle.dumps(obj)
```
Deserialize result using environment with SA version
Hello!
Thank you for the previous answer.
I use prefect and dask to execute workflows, that use SA inside and I get
very strange errors periodically:
Task 'HE Quotes[5]': Exception encountered during task execution!
Traceback (most recent call last):
File
at
> https://docs.sqlalchemy.org/en/14/core/pooling.html#using-connection-pools-with-multiprocessing-or-os-fork
>
> .It was recently pointed out that this closes out the parent process'
> connections, so in SQLAlchemy 1.4.33 there will be a parameter so you can
> change t
Hello!
>From time to time, I need to update data in tables and multiprocessing can
speed up this process. Last example: I’m trying to update data 7M rows in
table
SQLAlchemy 1.4.31, psycopg2 2.8.6, PostgreSQL
def job_update_rd(data_list):
updated = []
with Session() as session:
gt; https://docs.sqlalchemy.org/en/14/orm/session_api.html?highlight=session%20merge#sqlalchemy.orm.Session.merge
>
> however the main issue is that you are mixing results from multiple
> sessions, which in the vast majority of cases is unnecessary. The session
> corresponds to working
d
> normally be able to complete all the work you have for a particular
> operation within that single scope.
>
> On Mon, Jul 19, 2021, at 8:31 AM, Evgenii wrote:
>
>
> Hello!
> I’m using many-to-many relation, and this relationship bar_list must have
> list of
>
Hello!
I’m using many-to-many relation, and this relationship bar_list must have
list of
instances. Some of them can be repeated (ex. [inst1, inst2, inst1]).
I attach very simplified code there (all of database interaction is hidden
under the hood, user accesses database at top level, but this
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