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),
ForeignKeyConstraint(['id2'],['table_2.id2'
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).
On
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
--
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
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 t
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 Process
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, sentence_ta
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
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
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
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
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 may
On May 18, 12:42 pm, Michael Bayer 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.
--~--~-~--~~-
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
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 when it corrects.. Is it not possible to link
TableExt22 with Table22 only?
Thanks for the quick answer!
Fernando
#--
hi
i run today my tests just out of curiosity, so dont worry if not a
time for it.
here one more session.merge thing that has been working before... (now
on trunk r5970)
File "other/expression.py", line 436, in
p = session.merge(p)
File "sqlalchemy/orm/session.py", line 1162, in merge
0.5.4 we hardly knew ye.A small glitch was introduced in 0.5.4
which broke the merge() feature, and incredibly we had no test
coverage for the usage of merge() where some of the attributes on a
newly minted object were left blank. This is a pretty strong blocker
for anyone that uses m
can you create a test case which reproduces ?
On May 18, 2009, at 11:56 AM, scrapbooker wrote:
>
> 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
Looks like I get the exact same problem using sqlite, so my code is the
culprit, not Postgres (surprise, surprise):
2009-05-18 12:04:53,885 INFO sqlalchemy.engine.base.Engine.0x..ac SELECT
name FROM (SELECT * FROM sqlite_master UNION ALL SELECT * FROM
sqlite_temp_master) WHERE type='table' OR
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 correct
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
> se
On May 18, 2009, at 8:51 AM, fleong wrote:
> t = Table1()
> t.id = 0
>
> tex = TableEx22()
> tex.id = 0
>
> s.add(t)
> s.add(tex)
> s.commit()
>
> t21 = Table21()
> t21.id2 = 0
> t21.t1 = t
> s.add(t21)
> s.commit()
>
> t22 = Table22()
> t22.id2 = 1
> t22.t1 = t
> t22.tex = tex
> s.add(t22)
> s.
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 f
On May 18, 2009, at 11:38 AM, Francesca Leon wrote:
> May be I'm doing something weird... Anyway: I tried to "merge" on a
> not existing object, like this:
>
> session.merge(myObject)
> session.flush() # where "autoflush" is disabled on session
>
> The exception is triggered by the "flush" acti
May be I'm doing something weird... Anyway: I tried to "merge" on a not
existing object, like this:
session.merge(myObject)
session.flush() # where "autoflush" is disabled on session
The exception is triggered by the "flush" action.
"MyObject" is mapped on a table with some not nullable for
Hi all,
is there a way to request at "query-time" eager loading on every
relation involved?
For example, given:
- a class X that as a (normally lazy) relation to Y, which in turn has
a (normally lazy) relation to Z
- a query on class X
is there a way to activate eager loading on every relation of
Hello,
I have several CGI and cron scripts and that I would like coordinate
via a "First In / First Out" style buffer.That is, some processes
are adding work units, and some take the oldest and start work on
them.
Since I need the queue to both survive system crashes and provide an
audit rec
zugnush wrote:
>
> 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]
Francesca Leon wrote:
>
> 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
>
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]: engi
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 wrote:
>
> Hello list -
>
> SQLAlchemy 0.5.4 is released, and this release is *highly* recommended
> for all users.For an indication of how high, lets just say, highe
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?
I
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, passive=passiv
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
Tabl
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).
Unfortunatel
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
Yes that whats I meant. I was hoping to not have to create a class to
do this, but its not going to be take long. I think was just reading
more into what column_property could do.
Thanks a lot,
Nathan
BTW SQLAlchemy is brilliant!
2009/5/18 Michael Bayer :
>
>
> On May 17, 2009, at 2:13 PM, Nat
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