use attribute access rather than indexing.
Eg.
row['your_column_name']
row[your_column]
row.your_column_name
I imagine this would make it harder to pickle.
Simon
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that helps,
Simon
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='prod.cfg',
modulename='YOUR_APP_NAME.config')
(replace YOUR_APP_NAME with your root-level package name). I don't know
what the equivalent is in TG2.
Hope that helps,
Simon
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the mapper for a mapped class or object using the
class_mapper and object_mapper functions.
Hope that helps,
Simon
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/MigrateChangeset
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:sqlalch...@googlegroups.com] On Behalf Of
jarrod.ches...@gmail.com
Sent: 12 December 2008 07:08
To: sqlalchemy
Subject: [sqlalchemy] Re: Create tables with metadata
Doesn't get created
(instance)
return mapper.primary_key_from_instance(instance)
Hope that helps,
Simon
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-to-many
relation collection. PyAMF getattr()s the list, which is actually not
a list() but a sqlalchemy.orm.collections.InstrumentedList, and
subsequently tries to encode all of its _* and __* attributes.
Thanks, Simon
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On 3 Dez., 18:32, Michael Bayer [EMAIL PROTECTED] wrote:
I would also posit that PyAMF's behavior might be inappropriate in
this case. InstrumentedList is a subclass of list so I don't
immediately see why it would treat it differently.
Upon further inspection, this was exactly the case.
basically want to setup your relation() as a dict using the
lang column as key.
Simon
On 3 Dez., 16:33, Dom [EMAIL PROTECTED] wrote:
Hi
i tried the following example, but i cant get the join to work:
CREATE TABLE product (
id INTEGER,
price NUMERIC(15,2) NOT NULL
primary key (the 'name' column). If 'name' is the only thing that
uniquely distinguishes an ExtraStat, you can only have one per name.
Hope that helps,
Simon
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/ormtutorial.html#datamapping_joins
Hope that helps,
Simon
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objectbook2 object ...]
If you name your backref 'books', then you can use your Stock objects in
exactly the same way as you did before.
Hope that helps,
Simon
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with
declarative?
Thanks,
Allen
Did you see Michael's reply on the same day you sent your original
message?
http://groups.google.com/group/sqlalchemy/browse_thread/thread/d548138fe
d9903ef
Simon
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You received this message because
of your generous time :-) I wrote a free-standing example that
populates a test database. The initial query Simon suggested works
and produces the desired output -- the goal is to replicate this with
a sqlalchemy query. I also include the join we were working on. Now
that the syntax is correct
()
Cheers, Simon
On 10 Nov., 11:35, Ian Charnas [EMAIL PROTECTED] wrote:
Hello Alchemy Land!
If I have a simple test-case with Bowler objects and City objects, and
I want to use func.max and group_by in order to find the highest
scorers in each city... I might do something like this:
max_score
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of John Hunter
Sent: 10 November 2008 14:07
To: sqlalchemy@googlegroups.com
Subject: [sqlalchemy] Re: select where field=max(field)
On Mon, Nov 10, 2008 at 4:33 AM, King Simon-NFHD78
NULL,
...
) ENGINE=InnoDB DEFAULT CHARSET=latin1
Is that a bug, or am I erring somewhere?
Thanks, Simon
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away.
Simon
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For more
'.
This then gets embedded as a subquery into your larger query. It's
probably worth printing the SQL produced by each of the queries so that
you can see the difference.
Hope that helps,
Simon
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Checkout is built on SQLAlchemy (see http://www.sqlalchemy.org/news.html).
Maybe the authors want to share some insight.
On 28 Okt., 17:12, Patrick [EMAIL PROTECTED] wrote:
I am just learning the basics of Sqlalchemy, I am reading through the
O'Reilly book.
I was just wondering if anyone is
is fairly safe from SQL Injection attacks).
Hope that helps,
Simon
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, SQLAlchemy wraps all subsequent operations
on the same session in BEGIN/COMMIT statements (as observable in
MySQL's SQL log), even though I did not call begin() again! Not even
close() changes this behavior. Is this intended and if so, how can I
make it untransactional again?
Thanks, Simon
MySQL apparently is unable to store infinity in float columns, so SA
can't do it either. Google have me this:
http://forums.mysql.com/read.php?39,220571,220573#msg-220573
On 9 Okt., 18:22, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
I have a sqlalchemy table with a float column, and I would
:
On Fri, Oct 10, 2008 at 10:32 AM, Simon [EMAIL PROTECTED] wrote:
The statement looks good in my book...what does system error mean
exactly?
On 10 Okt., 17:15, Lukasz Szybalski [EMAIL PROTECTED] wrote:
Hello,
Could anybody tell me what is wrong with this select statement?
Records
('Referencing', self.metadata,
Column('referenced_id', MSInteger(unsigned=True),
ForeignKey('Referenced.id'),
mysql_engine='InnoDB'
)
Simon
On 1 Okt., 14:59, GustaV [EMAIL PROTECTED] wrote:
Hi all,
I'm experiencing an issue on MySQL (5.0.51a) when sqlalchemy
objects for you. It is described here:
http://www.sqlalchemy.org/docs/05/mappers.html#advdatamapping_relation_largecollections_passivedelete
Hope that helps,
Simon
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.
#-
Hope that helps,
Simon
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On Jul 1, 5:53 pm, Michael Bayer [EMAIL PROTECTED] wrote:
this means that at least one of the mappers is not fully compiled, but
the compiled flag on a mapper which calls upon it is set.This
usually implies that the compilation process failed midway, which in
all cases would throw an
Thanks Mike!
Your last suggestion was the best (ans easiest) solution, I guess I
just needed someone to point that out to me ;-) Since I want the whole
transaction to either succeed or fail, there's no need to use
SAVEPOINTs.
Cheers, Simon
On 3 Jul., 19:55, Michael Bayer [EMAIL PROTECTED
/Pylons-0.9.6.2-py2.5.egg/pylons/
wsgiapp.py', line 95 in __call__
response = self.dispatch(controller, environ, start_response)
File '/usr/lib/python2.5/site-packages/Pylons-0.9.6.2-py2.5.egg/pylons/
wsgiapp.py', line 236 in dispatch
return controller(environ, start_response)
File '/home/simon
On Jul 1, 3:04 pm, Simon Wittber [EMAIL PROTECTED] wrote:
While stress testing my Pylons Web App, SQLAlchemy will occasionally
throw the below exception.
I forgot to mention that once this exception occurs, my application is
hosed and requires a restart.
-Sw
= Session.object_session(self)
db_session.delete(self)
See 'How can I get the Session for a certain object' in the FAQ section
of http://www.sqlalchemy.org/docs/05/session.html
Hope that helps,
Simon
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dictionary in the example, then you could replace
shard_lookup above with a function call that does the query.
I hope that helps,
Simon
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'%%' instead of '%'.
Hope that helps,
Simon
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path. If the directory containing your MySQLdb
installation is not in there, you have a problem.
Hope that helps,
Simon
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hope that helps - I'm sure someone will correct me if I'm wrong.
Simon
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that helps,
Simon
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For more
that it is only in the process of being updated for SA 0.4)
Hope that helps,
Simon
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-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of maxi
Sent: 08 February 2008 14:30
To: sqlalchemy
Subject: [sqlalchemy] Re: Search in object list by field value
Thanks Simon,
I was doing of that manner.
Now, is advisable implement
person_one = get_first_match(people, 'id', 1)
Hope that helps,
Simon
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To post
'
session, where it becomes 1.
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of jdcman
Sent: 04 February 2008 03:04
To: sqlalchemy
Subject: [sqlalchemy] Re: How do I Instantiate a class with an
Auto-assigned Key ID
Ok
that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of maxi
Sent: 23 January 2008 13:54
To: sqlalchemy
Subject: [sqlalchemy] Two SqlAlchemy versions installed together
Can I get two SqlAlchemy versions installed together?
I need have
),
Mikropost.c.create_date date(2008,
1, 1)]))
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of [EMAIL PROTECTED]
Sent: 18 January 2008 13:22
To: sqlalchemy
Subject: [sqlalchemy] Filter by year in datetime column
Hello, pleas, i have
Hi,
I'm very pleased to announce a new version of sqlautocode. It features
many bugfixes and some refactored code.
More information about sqlautocode: http://code.google.com/p/sqlautocode/
Special Thanks to Jason Kirtland - most of the refactoring and
bugfixing was done by him!
Simon Pamies
sqlalchemy_schemadisplay.py is not part of the SQLAlchemy distribution -
it's a separate script attached to that wiki page. You can download it
from the link at the bottom of the page.
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL
in
dealing with syntax quirks of various databases, so I've got my fingers
crossed...
Thanks a lot,
Simon
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an empty list, you could use a slice and then call
.all()
Eg:
session.query(User).filter(User.c.id 3)[:1].all()
- []
Hope that helps,
Simon
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To post
Michael Bayer wrote:
On Dec 11, 2007, at 10:07 AM, King Simon-NFHD78 wrote:
I assume the problem is that my date_created column isn't
immediately
available at the 'after_insert' stage, because it is
generated in the
SQL INSERT statement, but hasn't been read back from
Michael Bayer wrote
On Dec 12, 2007, at 9:04 AM, King Simon-NFHD78 wrote:
Hi,
I'm connecting to an ancient version of MySQL (3.23.58)
that (as far
as
I can tell) doesn't support basic JOIN table ON
condition syntax
Ie. this gives a syntax error:
SELECT * FROM
Jason kirtland wrote:
King Simon-NFHD78 wrote:
Hi,
I'm connecting to an ancient version of MySQL (3.23.58)
that (as far as
I can tell) doesn't support basic JOIN table ON
condition syntax
Ie. this gives a syntax error:
SELECT * FROM productversions pv
JOIN
, but if you wanted to do any
more complicated date calculations, the dateutil library is very good:
http://labix.org/python-dateutil
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Adam B
Sent: 10 December 2007 19:15
a way to get the name of the property through either of these
methods.
Is there a generic way that, given a mapped class, I can get a list of
the mapped properties with their names?
Thanks a lot,
Simon
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svilen wrote:
On Tuesday 11 December 2007 13:13:37 King Simon-NFHD78 wrote:
Hi,
I used to be able to iterate over mapper.properties.items() to get
the name of each mapped property along with the object that
implements it. However, in 0.4.1, trying to do this results
MySQLdb.connections16
MySQLdb.converters11
Note that the module names are where the classes are defined, not where
they are used, but it may be enough to give you a clue.
Hope that helps,
Simon
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On Dec 3, 3:31 am, Michael Bayer [EMAIL PROTECTED] wrote:
On Dec 1, 2007, at 11:10 PM, Simon Wittber wrote:
Is there any way around this issue, other than explicitly calling an
id_generator function, and setting the primary key before the instance
gets passed to the shard chooser?
I
I'd like to set up a sharding strategy where shards are chosen based
on this code:
SHARD_COUNT = 5
databases = dict((i,create_engine('sqlite://shard_%s.db' % i)) for i
in xrange(SHARD_COUNT))
def shard_chooser(mapper, instance, clause=None):
return instance.primary_key_id % SHARD_COUNT
that helps,
Simon
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It may not help in your situation, but did you know that you can also
index the row with the Column instances themselves
Ie: row[table.c.column]
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Yuri Pimenov
Sent: 27 November 2007 16
Hi,
On Nov 14, 12:44 am, m h [EMAIL PROTECTED] wrote:
On Nov 13, 2007 5:14 AM, Simon Pamies [EMAIL PROTECTED] wrote:
Hey Simon, I found your code today and started to hack on it to do db
migrations. Since it is out of the scope of your project, I'll
probably just write my own. But before
On Nov 13, 4:53 pm, Werner F. Bruhin [EMAIL PROTECTED] wrote:
Gerhard Haering wrote:
On Tue, 13 Nov 2007 06:00:25 -0800, Simon Pamies [EMAIL PROTECTED] wrote:
Could you perhaps explain the advantages/differences to autoload=True
I understand that autoload=True has a pretty high overhead
having explicit model definition can come very handy.
Simon
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want to directly contribute code then please sign up for the
project.
Enjoy!
--
Simon Pamies
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Slicing of Query instances can return inconsistent types if negative
stop/start values are used.
The below patch to tes/orm/query.py demonstrates the issue. When
slices with negative stop/start values are used, a list type is
returned. When positive values are used, a Query instance is returned.
You may be interested in an older thread, 'How to get list of
relations':
http://groups.google.com/group/sqlalchemy/browse_thread/thread/ff03af921
eb12acb/861597e8a72f5e6f
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of Christophe
an unnecessary COUNT
query. (I'm not sure why __iter__ gets called before __len__ - I would
have guessed it would be the other way round)
I can't think of an argument for not having __len__ on Session though.
Simon
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On 12.10.2007, at 18:46, Gaetan de Menten wrote:
On 10/12/07, Simon Pamies [EMAIL PROTECTED] wrote:
On Oct 12, 10:09 am, Gaetan de Menten [EMAIL PROTECTED] wrote:
I couldn't agree more. I mean: shouldn't the autoload part be
integrated into SQLAlchemy reflection capability if it can do more
type, until a type that
appears in types.py is encountered.
Nice - will check that and will come back to you if I have questions.
Simon
PGP.sig
Description: This is a digitally signed message part
Firebird could be supported by this new autocode.
Will try to include this using your help - more via private mail.
I did the test with sqlalchemy 0.4beta6, which seems to require some
changes to autocode.
Thanks a lot for the information. I will try to include this in the
0.5 line.
Simon
on googlecode and
contribute source code.
Simon
On 10/11/07, Paul Johnston [EMAIL PROTECTED] wrote:
Hi,
It's really good to see this script progressing.
BTW, with SA 0.4, this script should be able to work with no
database-specific hacks at all. If you're interesting in implementing
for 0.5
are welcome! If all goes well 0.5 can be released with the first
stable version of sqlalchemy 0.4.
Simon
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give me a short explanation of the MIT license model?
Simon
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Hi all,
I have the following error:
sqlalchemy.exceptions.InvalidRequestError: Column 'DownloadTopic.ID'
is
not available, due to conflicting property
'ID':sqlalchemy.orm.properties.ColumnProperty object at 0xb761732c
when trying to access the topics field defined by the following model.
It
Hi,
I did some more investigation about this subject and found the source
for this problem and perhaps some hints for people willing to help out
with this problem:
Around line 1002 of mapper.py there is a call to
prop = self.columntoproperty[column]
Why this fails? It seems because two
On Oct 9, 4:23 pm, Michael Bayer [EMAIL PROTECTED] wrote:
On Oct 9, 2007, at 4:39 AM, Simon Pamies wrote:
I have the following error:
sqlalchemy.exceptions.InvalidRequestError: Column 'DownloadTopic.ID'
is
not available, due to conflicting property
'ID
On Oct 9, 7:09 pm, Michael Bayer [EMAIL PROTECTED] wrote:
On Oct 9, 2007, at 12:33 PM, Simon Pamies wrote:
I solved this problem by using autocode (and by the way I created an
enhanced version of it called autocode4 - see
http://www.sqlalchemy.org/trac/wiki/UsageRecipes/AutoCode
, the
changes should always be reflected in the session.
Hope that helps,
Simon
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:
stats_table = sa.Table('stats', md,
sa.ForeignKeyConstraint(['stats.rid'],
['runs.rid']),
autoload=True)
Also, I believe mysql table reflection is being completely reworked in
0.4, so the issue might go away.
Hope that helps,
Simon
/refman/5.0/en/select.html#id3376456
I'm currently monkeypatching MySQLCompiler to use LIMIT offset,
limit. Would it make sense for MySQLCompiler to be changed to always
use that syntax, since it is supported in more MySQL versions than the
standard?
Thanks,
Simon
to use the 'from_obj' parameter for select. Something like:
select([s.c.id, f.c.status], from_obj=[oj])
Hope that helps,
Simon
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a family tree with
a row for each Person). I don't really think they're relevant in this
case.
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Alexandre CONRAD
Sent: 03 August 2007 10:44
To: sqlalchemy
Subject
. I don't know you
didn't need this before though.
Hope that helps,
Simon
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Arun Kumar PG
Sent: 31 July 2007 09:47
To: sqlalchemy@googlegroups.com
Subject
You want something like this:
user_table = Table('users', metadata, Column('userid', String(8)))
user_table.create(checkfirst=True)
# or
# metadata.create_all(checkfirst=True)
Documentation is at:
http://www.sqlalchemy.org/docs/metadata.html#metadata_creating
Hope that helps,
Simon
for circular references, and treat x-to-many relationships specially.
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of HiTekElvis
Sent: 23 July 2007 23:31
To: sqlalchemy
Subject: [sqlalchemy] Model to Dictionary
Anybody know a way
SQLAlchemy Column objects override the '==' operator (and many others as
well) so that python expressions get converted to appropriate SQL
expressions.
It's mentioned (briefly) here:
http://www.sqlalchemy.org/docs/sqlconstruction.html#sql_whereclause
Hope that helps,
Simon
-Original
()
connection.create_function(regexp, 2, self.regexp)
results in 'Connection' object has no attribute 'create_function'
Is it possible to access the underlying SQLite connection, and use
that to create my regexp function?
Cheers
Simon
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of the
identity_map magic, you will only get one object in the session
representing that row anyway.
I think a testcase is probably needed - you could try and make a single
script that starts two threads and performs operations on UniqueName
obects, and see if you can get the same failure.
Simon
is a nice-to-have
feature rather than a necessity, but it's just so convenient :-)
Cheers,
Simon
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/unitofwork.html#unitofwork_api_bind).
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of Alchemist
Sent: 30 May 2007 14:19
To: sqlalchemy
Subject: [sqlalchemy] how to retrieve/update data from/on multiple
databases
Working
Max Ischenko wrote:
On May 10, 4:38 pm, King Simon-NFHD78 [EMAIL PROTECTED]
wrote:
You're halfway there with your 'posts' relation. I think if you pass
backref='author' in your relation, then WordpressPost
objects will get
an 'author' property which points back to the WordpressUser
]/django?unix_socket=/Applications/MAMP/tmp/my
sql/mysql.sock
Hope that helps,
Simon
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only need to
implement the methods that you actually want to override, and you won't
have to update your extension class every time new extension methods are
added.
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com
[mailto:[EMAIL PROTECTED] On Behalf
(userinfo.c.name.startswith('Ben'))
Or:
your_query.select(userinfo.c.name.like('Ben%'))
Hope that helps,
Simon
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Disrupt07 wrote
@Simon
Thanks. But what is your_query? Is it SQLAlchemy or pure SQL?
It is a Query object, as described here:
http://www.sqlalchemy.org/docs/datamapping.html
If you haven't read them yet, I'd recommend working through a tutorial -
I found this one really helpful
this? (e.g. using the type() function and what shall I import in
my controller file?)
Thanks.
Well, you could import sqlalchemy.orm.attributes, and then when you want
to check the type of an object you would say 'if isinstance(your_object,
sqlalchemy.orm.attributes.InstrumentedList):'
Simon
Roger Demetrescu wrote:
On 4/11/07, King Simon-NFHD78 [EMAIL PROTECTED] wrote:
I've got no idea about the source of the problem, but it
would probably
be helpful if you could provide stack traces from the exceptions, if
that's possible.
Do you mean using the traceback module
that helps,
Simon
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Thanks,
Simon
From: sqlalchemy@googlegroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of Michael Bayer
Sent: 28 March 2007 17:19
To: sqlalchemy@googlegroups.com
Subject: [sqlalchemy] Re: Confused by foreign_keys argument
what it cant
This caught me out a couple of weeks ago, and I've seen a couple of
other similar questions as well. You need to add 'correlate=False' to
the nested select.
I wonder if this should be added to the FAQ?
Hope that helps,
Simon
-Original Message-
From: sqlalchemy@googlegroups.com [mailto
Michael Bayer wrote:
On Mar 17, 2007, at 11:39 AM, Simon King wrote:
I had assumed that post_update was only necessary when you are
inserting two rows that are mutually dependent, but in this case I
wasn't inserting either a ReleaseLine or a Label. I suppose
post_update can
dependent, but in this case I
wasn't inserting either a ReleaseLine or a Label. I suppose
post_update can actually have a knock-on affect across the whole
dependency graph.
Anyway, thanks a lot again for your help,
Simon
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