randomness of the
problem made it especially difficult to diagnose. This is probably such an edge
case that it’s not worth spending any more time on. I’m happy I understand
what’s going on now at least.
Thanks,
Will
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s/sqlalchemy/orm/relationships.py",
line 2076, in _determine_joins
"specify a 'primaryjoin' expression." % self.prop)
sqlalchemy.exc.NoForeignKeysError: Could not determine join condition between
parent/child tables on relationship Table2.table1_stuff - there are no foreign
in the migration; so that
doesn’t explain references sticking in some cases.
By the way, this isn’t an urgent thing. I made the problem go away by deleting
the bad migration; we didn’t need it any more. My interest is purely academic.
I’m just worried this might happen again. Mostly though, I d
I forgot to mention, we’re not using clear_mappers().
Thanks,
Will
> On 21 Feb 2016, at 19:19, Will Angenent wrote:
>
> Hi Mike,
>
> Thanks for your quick response yet again! Here’s the stack trace.
>
> tests/integration/test_database.py:14: in test_d
#
sys.stderr.write('*** name=%s\n' % __name__)
#
return tag_to_resource
What I found is that in the bad case, both tag_to_resource and __name__ were
None.
Thanks,
Will
>
ration for a many-to-many relationship in a
model defined in the migration file.
Are we being stupid to be using the ORM in alembic migrations? If not, is
it worth for me to spend more time on this? Is there any way to get this to
behave non-randomly? More details are below.
Thanks,
Will
Lo
Thanks, that's helpful. We should be able to use both solutions. Thanks
for the clarification!
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I have run into an interesting condition when using joined table
inheritance. For example we have the typical employee, manager and engineer
tables with the following relationships:
- an engineer is an employee
- a manager is an employee
- an employee has a manager
We find some interesting resu
The problem seems to be independent of context. Happens both when I run
python interactively from the prompt, and from within a Pyramid-based web
app.
I have not tried other connectors or raw DBAPI. Will try that.
On Sat, Jun 13, 2015 at 5:48 AM, Mike Bayer
wrote:
>
>
> On 6/13/15 3:
> Session.execute() is not the same as engine.execute(), where the latter is
> autocommitting (assuming you also called execution_options(autocommit=True)
> for this particular text() construct).
>
>
>
> On May 31, 2012, at 9:23 PM, Will Orr wrote:
>
> Hello all!
>
>
Hello all!
I'm having this *exact* bug from a few years ago wrt. calling stored
procedures.
https://groups.google.com/forum/?fromgroups#!topic/sqlalchemy/qA_ypVgJ1B0
What makes it worse, however, is that adding the autocommit execution
option or explicitly starting and stopping a transaction do
For those that end up being interested in something like this. For the
complete round robin I did this.
from path.to.time import Time
from psycopg2 import extensions
def cast_time(value, cur):
"""Cast postgresql Time type to a Time object"""
if value is None:
return None
re
On Wed, Apr 18, 2012 at 10:57 AM, Michael Bayer wrote:
>
> On Apr 18, 2012, at 10:47 AM, Will wrote:
>
>
> Yes, I knew about the adapters. A coworker of mine came up with this:
>
>...
>
> s = Session()
> c = s.connection()
>
> cast_time = lambda
On Wednesday, April 18, 2012 10:17:43 AM UTC-4, Michael Bayer wrote:
>
>
> On Apr 18, 2012, at 9:36 AM, Will wrote:
>
> The postgresql Time type supports times from "00:00:00" to "24:00:00" in
> accordance with ISO 8601 <http://en.wikipedia.org/wiki/ISO_
support that. I'm using SQLAlchemy
0.6.8 and was wondering if there is a way to allow it to support the
"24:00:00" midnight notation.
I've tried to make a custom type that would support it, but it seems that
psycopg2 will return a datetime.time class even if I define the
I'm not positive about this but if you are talking about the integer column,
all defaults have to be a string or some SQLAlchemy function so you'd want:
type = sa.Column(sa.types.Integer, nullable=0, default='1')
On Wed, Jul 13, 2011 at 7:37 AM, ddarko wrote:
> class AccountHistory(Base):
>i
I am using SQLAlchemy 0.5.5 which is the version packaged with Red Hat
Enterprise 6. I am using the below class to implement transactions
using closures. (I have excluded methods unrelated to this issue.) I
am using psycopg2 2.0.13 ('postgres://' URLs) to talk to the database,
if that matters.
he load isn't needed and this is actually a recent
> regression as of 0.6.6, so 0.6.5 won't exhibit this behavior...of course
> 0.6.5 has the previous issue that was fixed here but its likely not as
> common. This is ticket #2049 and a fix will be available shortly.
>
> Als
a program to only
what it will need to do its work. I have a table that has two
parents,
that is a foreign key to two tables. One of those tables isn't needed
by the application, but it needed for other applications that use
these
same SQLAlchemy models.
The following example shows first a def
ff to attributes.py.
>
>
> On Jan 4, 2011, at 10:49 AM, Will Weaver wrote:
>
>> I made a different patch. This one I don't believe is ideal, but I
>> think it might be the appropriate place to make the patch
>>
>> http://pastebin.com/kZbZcJ3u
>>
>> O
I made a different patch. This one I don't believe is ideal, but I
think it might be the appropriate place to make the patch
http://pastebin.com/kZbZcJ3u
On Tue, Jan 4, 2011 at 8:58 AM, Will wrote:
> Hello,
>
> I noticed that when setting passive_deletes="all" on a r
ut that doesn't seem to be the appropriate place for the fix.
Thanks for any input.
-Will
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Does the lack of a response mean that it can't be done or just that no
one knows how to do it? Or did I not ask the question good enough?
On Tue, Dec 21, 2010 at 12:02 PM, Will wrote:
> In continuation of the following post
>
> http://groups.google.com/group/sqlalchemy/browse
In continuation of the following post
http://groups.google.com/group/sqlalchemy/browse_thread/thread/160870682c011611/8229a3eb9c10f870?lnk=gst&q=parameters+select#8229a3eb9c10f870
Is there a way to get the columns that the bind parameters correspond
to? I was able to get the param values but tha
I was working on, but it definitely is worth
it to get this working.
Thanks a lot.
-Will
On Wed, Dec 15, 2010 at 2:45 PM, Michael Bayer wrote:
> This is an interesting edge case and I can probably ensure that the
> dependency between Parent/Child is present in the unit of work even if the
ne.0x...6050
(2,)
2010-12-15 14:33:56,697 INFO sqlalchemy.engine.base.Engine.0x...6050
DELETE FROM children WHERE children.id = ?
2010-12-15 14:33:56,697 INFO sqlalchemy.engine.base.Engine.0x...6050
((1,), (2,))
2010-12-15 14:33:56,697 INFO sqlalchemy.engine.base.Engine.0x...6050
COMMIT
On Dec 15, 2:17
ion.bind.echo = True
begin()
session.add_all(children)
session.add(parent)
commit()
begin()
for child in children:
session.delete(child)
session.delete(parent)
commit()
session.bind.echo = False
finally:
Model.metadata.drop_all(engine)
"""
>Fro
..@custom_values.setter
> def custom_values(self, value):
> self.v1 = value.v1
> self.v2 = value.v2
>
> I considered replacing the mechanism of composite with the above type of
> thing in 0.7 but there were still some edge cases that composites seem to
> have.
&
"""
Hello,
I've been trying to map two tables that have 25 columns each in
addition to
keys. The parent table's (descriptions) column values represent the
key in a
dictionary and the child table's (values) column values represent the
values of
the dictionary.
i.e.:
table 'descriptions':
lems but if I go via my mapped class (Source, also see
below), I get such errors.
Any ideas? Am I just being dumb here?
Cheers
Will
#ENGINE
engine = sqlalchemy.create_engine ('postgres://me:[EMAIL PROTECTED]:
5432/MAP', convert_unicode=True)
#DOESN'T WORK:
Session = sql
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