Hi Eduardo,
group_by accepts strings, so this is certainly possible. You might do it like
so:
# build our column names query
column_names = session.query(tab.c.name).filter(tab.c.value==354)
# execute and a build a list of strings from our query
column_names = [column_name for (column_name,) in
I was trying to configure a multilevel inheritance mapping (either using joint-
table or single-table) but it didn't work as I was expecting it to.
I understand that it probably has never been thought of, but in my particular
use case, it would have been really handy.
Any idea if this is
Hi everyone,
in my script I work with two different sessions (say session1 and
session2) bounded to the same database and, consequently, with ORM
objects obtained with queries issued on them. It can occur that an
object related to session1 change a value of the corresponding mapped
table record
Hi Thanks for the answer,
This is my query
column_names = session.query(tab.c.name).filter(tab.c.value==354)
column_names = [column_name for (column_name,) in column_names]
query=sess.query(func.max(tab.columns['name']),datab.columns['article_id']).group_by(*column_names).all()
I get an error
multilevel sounds like you mean this:
class A:
class B(A):
class C(B):
class D(C):
That's supported fully in all cases, and for single/joined should work without
any special steps (for concrete its slightly more weird). If this is not
working then we can get you going with some test cases.
Hi list,
I'm using SA 0.6.7, Python 2.6.5 and Postgres 8.4 on Ubuntu 10.04 LTS
I'm trying to optimize my code against postgres by using the recursive
statements CTE
as documented here :
http://www.postgresql.org/docs/8.4/interactive/queries-with.html
My model is a group graph ( many to many
On Aug 11, 2011, at 12:31 PM, NiL wrote:
Hi list,
I'm using SA 0.6.7, Python 2.6.5 and Postgres 8.4 on Ubuntu 10.04 LTS
I'm trying to optimize my code against postgres by using the recursive
statements CTE
as documented here :
Hi there,
I have been using ORM vertical partitioning for a while with MySQL 5.1.58
and MyISAM tables and SQLAlchemy 0.7.2.
I have recently switched over to using InnoDB tables and my vertical
partitioning table creation is failing part-way in with an errno 105 code.
I have confirmed that all
On Aug 11, 2011, at 5:46 AM, Massi wrote:
Hi everyone,
in my script I work with two different sessions (say session1 and
session2) bounded to the same database and, consequently, with ORM
objects obtained with queries issued on them. It can occur that an
object related to session1 change
On Aug 11, 2011, at 2:04 PM, Daniel Robbins wrote:
Hi there,
I have been using ORM vertical partitioning for a while with MySQL 5.1.58 and
MyISAM tables and SQLAlchemy 0.7.2.
I have recently switched over to using InnoDB tables and my vertical
partitioning table creation is failing
On Thu, Aug 11, 2011 at 12:20 PM, Michael Bayer mike...@zzzcomputing.comwrote:
Vertical partitioning implies tables in separate databases or schemas.
It seems like you have it set up such that a table in partition A can refer
to a table in partition B using a schema qualifier. So if this is
On Aug 11, 2011, at 2:57 PM, Daniel Robbins wrote:
based on the sample code in the O'Reilly book
Just FYI the Oreilly book is super, duper, extremely old and out of date.A
good read through the documentation on the SQLAlchemy site should be more
complete at this point and up to date,
On Thu, Aug 11, 2011 at 2:12 PM, Michael Bayer mike...@zzzcomputing.comwrote:
Just FYI the Oreilly book is super, duper, extremely old and out of date.
A good read through the documentation on the SQLAlchemy site should be more
complete at this point and up to date, also stressing a whole
Sorry if I bother again but adding some others relationships like this
spanning on 5 tables:
mapper(UserLayer, inherits=base_user_layer_mapper,
polymorphic_identity=CLASS_LAYER,
properties={
...
'lca_transport': relationship(LCATransport,
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