Mike,
Woooh ! it all sounds sounds great !
I was thinking that it would be nice to have an up-to-date version of
your post you did a while back:
http://techspot.zzzeek.org/?p=17
I know such a task takes time but it would be fun to see the results.
That would keep SA's marketing in shape (even
I am building a tree datastructure using parent pointers. The only differece
from a standard adjancancy list is that I can have multiple trees, each
identified by a root session node. In order to be allow fast queries each tree
node has a pointer to the session id (ie the root node).
I am trying to configure the following relationships:
table1 -1---N- table2
___|___- type
| |
table_ex22 1--N- table21 table22
paste my code here. When relate a instance of Table22 with the
Hi Michael
I just downloaded version 0.5.4 of SqlAlchemy.
I would like to signal just a small detail that seems to make my tests fail:
[...]
File
C:\Python25\lib\site-packages\sqlalchemy-0.5.4-py2.5.egg\sqlalchemy\orm\attributes.py,
line 379, in get
return self.get(state,
I just started using SQL and SQLAlchemy 2 days ago. I don't know SQL
or Alchemy very well yet but this is all the code I will ever need (at
least for a while).
This is my python code for the server. Have I done this well? What
more could I do? What more can I do to make it hacker/cracker proof?
Great, cheers.Let's update SQLAlchemy to 0.5.4 for the performance
enhancement.
On Mon, May 18, 2009 at 9:20 AM, Michael Bayer mike...@zzzcomputing.comwrote:
Hello list -
SQLAlchemy 0.5.4 is released, and this release is *highly* recommended
for all users.For an indication of how high,
There seem to be a lot of people getting unicode when they want str.
I want unicode, I've tried to force it with the connection
parameters. I get it for the column heading but not the value.
Can anyone explain to me what I'm doing wrong.
Thanks
Neil
In [121]: import sqlalchemy
In [122]:
Sorry, here it is:
Traceback (most recent call last):
File "C:\dex\python\dex\tests\adrims\TestDataBase.py", line 973, in
testMerge_SomethingThatNeverExisted
self.session.flush()
File
"c:\python25\lib\site-packages\SQLAlchemy-0.5.4-py2.5.egg\sqlalchemy\orm\session.py",
line 1354, in flush
thanks, this is fixed in r5970 and I may release 0.5.4p1 today.
On May 18, 2009, at 11:54 AM, Francesca Leon wrote:
Sorry, here it is:
Traceback (most recent call last):
File C:\dex\python\dex\tests\adrims\TestDataBase.py, line 973,
in testMerge_SomethingThatNeverExisted
Hello,
My code seems to operating fine, loading some values into a Postgres
8.1 database using sqlalchemy 0.4.7 in Debian Lenny. The first 2
tables load fine into Postgres, but on the third looking at the logs
(see below), something strange happens. sqlalchemy passes in the
column values
have you tried not using 0 for a primary key ? i feel like that
might be getting in the way.
On May 18, 2009, at 3:59 PM, fleong wrote:
Sorry for the delay. Yes, i want to reference Table22, the 'correct'
code is as follows, but obtains the same result. Don't understand
because not run
On May 18, 12:42 pm, Michael Bayer mike...@zzzcomputing.com wrote:
can you create a test case which reproduces ?
Michael, yes, I'll create a test case which simplifies the issues.
It's definitely not a Postgres issue, but rather how I'm managing the
Session, dependencies, or the like.
0 in a numerical primary key.. excuse if it is obvious, but: what's
wrong? :/ I've tried and nothing.. when ask for instances that are
linked through 't22' get all instances of 'Table2'. There must be
something in the relationships configuration involving the entire
table.. can it be?
On 18
try taking a look at your SQL output. the issue is pretty obvious,
the join condition between your two tables is insufficient to get a
T22 row. table_2.id has two rows with 0 for the id column, so
joining from table_2 to table_22 on just id gives you two rows. it
has nothing to do with
Thanks, I'm still getting a unicode decode error though.
C:\Python26\lib\site-packages\sqlalchemy-0.5.2-py2.6.egg\sqlalchemy
\types.pyc in process(value)
468 def process(value):
469 if value is not None and not isinstance(value,
unicode):
-- 470
On May 18, 2009, at 6:17 PM, zugnush wrote:
Thanks, I'm still getting a unicode decode error though.
C:\Python26\lib\site-packages\sqlalchemy-0.5.2-py2.6.egg\sqlalchemy
\types.pyc in process(value)
468 def process(value):
469 if value is not None and
you'd have to roll that yourself. Its generally not feasable for
every relation on an object to be eagerloaded since it would create
too many joins.
On May 18, 2009, at 11:11 AM, Joril wrote:
Hi all,
is there a way to request at query-time eager loading on every
relation involved?
Hi,
I am trying to map a relation in class which allows it to access
objects from a couple of tables away ie.
class Zone(object):
pass
class Sentence(object):
pass
class RawTag(object):
pass
class ProcessedTag(RawTag):
pass
mapper(RawTag, tag_table)
mapper(Sentence,
On May 18, 2009, at 8:02 PM, Nathan Harmston wrote:
Hi,
I am trying to map a relation in class which allows it to access
objects from a couple of tables away ie.
class Zone(object):
pass
class Sentence(object):
pass
class RawTag(object):
pass
class ProcessedTag(RawTag):
On May 18, 2009, at 8:06 PM, Michael Bayer wrote:
if you want to make a chained join like that, use just primaryjoin(),
dont use secondary, and set viewonly=True.
I might be off on the dont use secondary advice. if you do use
secondary, secondary is the middle table, so in this case it
Hi,
I am playing with the mapping inheritance structures to my database.
I have a the following hierarchy:
class Tag(object):
pass
class NormalisedNameTag(Tag):
pass
class NormalisedPlaceTag(Tag):
pass
The idea is that a pre-processing step will produce a series of tags
and then
Yes,
No I'm using oracle.
I don't see anything applicable on the wikipage.
I tried convert_unicode=True assert_unicode=True
but I now believe that both are more about conversion than giving
hints on the native db coding.
The column in question is varchar2 and the db version is 10.2.0.4.0
more recent versions of cx_oracle know how to return python unicode
directly, if you are reading an NVARCHAR column. for VARCHAR, you
have to also make sure the NLS_LANG environment variable is set to
something like AMERICAN-AMERICA.UTF8 (or wahtevr nationality you are
dealing with).
the foreign key between table2 and their children was wrong.. now
works correctly.
Thanks for your help!
greetings,
Fernando
table_21 = \
Table(
'table_21', metadata,
Column('id2', Integer, primary_key = True),
Column('info', String),
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