Hi All,
I would like to get all tables of a database that I have read only
access.The lines below raise CircularDependencyError: Circular dependency
detected. Cycles:
How can I get around this problem? Any idea?
from sqlalchemy.schema import MetaData
meta = MetaData()
Hello list,
pardon the innocent/dumb question: wouldn't it make sense to expire_all()
on begin_nested() and rollback()?
My concrete example goes like this:
savepoint = session.begin_nested()
session.delete(stuff)
session.begin_nested()
# Now, if I don't call session.expire_all() here,
if you are reflecting tables, and sorting them reveals that there are mutual
dependent foreign keys (or some other kind of cycle), then the tables can’t be
delivered in foreign key dependency order, there is no such ordering.
when creating Table objects you can break such a cycle using the
On Jan 30, 2014, at 9:52 PM, Lucas Taylor ltaylor.vo...@gmail.com wrote:
Any notion of how one might instruct SQLAlchemy to (conditionally) create
tables using UNLOGGED?
I'd like to be able to modify the DDL for all CREATE TABLE statements under
certain conditions (dialect=postgresql
Hi,
I'm almost sure this is a bug, but maybe I'm missing something obvious.
I've tested it with Python 3.3, SQLAlchemy 0.9.1, PostgreSQL 9.3 and
reduced the issue to the following code:
#!/usr/bin/env python3
from sqlalchemy import *
from sqlalchemy.orm import *
from
i believe you need to be explicit on your group_by :
group_by(P.id)
or
group_by(P.attrs)
or
group_by(P.id,P.attrs)
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On Jan 31, 2014, at 2:49 PM, Robert Tasarz robert.tas...@gmail.com wrote:
Hi,
I'm almost sure this is a bug, but maybe I'm missing something obvious.
I've tested it with Python 3.3, SQLAlchemy 0.9.1, PostgreSQL 9.3 and reduced
the issue to the following code:
Here's most relevant
I've got a two tables I'd like to create a relationship for. One is the
object, and another tracks versions.
Here's a gist with the setup:
https://gist.github.com/deontologician/8744532
Basically, the object doesn't have a direct reference to the current
version stored in the table. Instead, the
On Friday, January 31, 2014 7:45:07 AM UTC-7, Michael Bayer wrote:
On Jan 30, 2014, at 9:52 PM, Lucas Taylor ltaylo...@gmail.comjavascript:
wrote:
Any notion of how one might instruct SQLAlchemy to (conditionally) create
tables using UNLOGGED?
I'd like to be able to modify the DDL for
On Jan 31, 2014, at 5:24 PM, lars van gemerden l...@rational-it.com wrote:
Hi, all
I am running into these 2 errors and have run out of ideas what to do about
it (also because i don't what they mean); They seem to happen in exactly the
same circumstances.
mapper, table, update)
well I can get it to work for lazy loading like this:
expr = select([func.max(Version.id)]).\
where(Version.object_id == Object.id).\
correlate_except(Version).as_scalar()
Object.current_version = relationship(Version,
primaryjoin=and_(
Hi Michael,
With some more detail:
What i do is:
1 make a new object (mapped)- obj1
2 create a scoped session (with context manager)- session1
3 do session1.add(obj)
4 create another scoped session - session2
5 do session2.query(someclass).get(some_id)-obj2
6 close session2, no commit, no
On Jan 31, 2014, at 8:11 PM, lars van gemerden l...@rational-it.com wrote:
this means an object was meant to be UPDATEed via the ORM, however the row
which is the target of the UPDATE is missing. Either the primary key of this
row changed somehow, or the row was deleted, *or* the row is
On Jan 31, 2014, at 8:51 PM, Josh Kuhn deontologic...@gmail.com wrote:
This is pretty amazing. I get it to *almost* work. The issue seems to be that
I don't use the database column names as my model attribute names. The db
column names are really obfuscated, so it's more like:
class
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