On Wed, 28 Jul 2010 15:17:09 +0530 (IST), Faheem Mitha
fah...@email.unc.edu wrote:
Hi,
When calling create_all on a metadata instance after a
session has
alrady been opened causes the create_all to hang, I
assume because
the session is blocking the create_all. Is there
Is there any support yet in SQLAlchemy for Common Table Expressions
e.g.
WITH foo(blurp, bletch) AS (SELECT bar*2, bletch from banana where
bletch 3)
SELECT f.* FROM foo as f
where blurp 1
I have not been following SA development for some months (due to a job
move) so I am not yet up to speed
hi there
i get an error:
Could not determine relationship direction for primaryjoin condition
'cisdata.`ID_cis` = cisbr.`ID_cisbr`', on relationship Branchen.branche.
Do the columns in 'foreign_keys' represent only the 'foreign' columns in
this join condition ?
when I use the following
On Thu, 29 Jul 2010 11:36:43 +0100, King Simon-NFHD78 simon.k...@motorola.com
wrote:
You can tell meta.create_all() to use the same underlying DB connection
as the session by using the session.connection() method with the 'bind'
parameter to create_all().
Ie.
connection =
On 7/29/10 17:18 , Faheem Mitha wrote:
Hi Simon,
Thanks. Do you understand why this blocking takes place? I assume by
default create_all tries to make a different connection, and fails for
some reason?
My guess is that it does not fail, but your database is blocking the
create_all statements
I'm using an Oracle legacy database and can't add a primary key to a
table with none, so I am using ROWID as the primary key so sqlalchemy
has a unique id.
I'm also using (attempting to use) this table pornographically
(Concrete Table Inheritance).
The trouble I'm having is that Oracle complains
Oops! I didn't check my spell checker closely I meant
'polymorphically' not 'pornographically'!!
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I worked out this solution:
class RowID(Unicode):
def _compiler_dispatch(self, type_):
return ROWID
Please let me know if there are any obvious implications that I may
have overlooked.
Thanks
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sqlalchemy
the idiomatic solution would be:
class RowID(Unicode):
pass
from sqlalchemy.ext.compiler import compiles
@compiles(RowId):
def compile_rowid(compiler, element, **kw):
return ROWID
we should add ROWID to the oracle dialect.
On Jul 29, 2010, at 12:54 PM, Kent wrote:
I worked out this
Hi, just wondering if there's support for window functions, or if
there's any plans to add this yet?
Thanks
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I'm getting a messy error that could be a bug, but is very likely
related to my setup of a set of 2 polymorphic classes I am attempting
to map.
One entity is a transaction and the other is a transaction_archive
record. The table structure is therefore very similar for both tables
and it seems to
On Thu, 29 Jul 2010 15:18:33 + (UTC)
Faheem Mitha fah...@email.unc.edu wrote:
On Thu, 29 Jul 2010 11:36:43 +0100, King Simon-NFHD78
simon.k...@motorola.com wrote:
You can tell meta.create_all() to use the same underlying DB
connection as the session by using the session.connection()
it is a TODO as ticket #1844. You can implement with the compiler extension
for now.
On Jul 29, 2010, at 2:22 PM, ellonweb wrote:
Hi, just wondering if there's support for window functions, or if
there's any plans to add this yet?
Thanks
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On Jul 29, 2010, at 2:31 PM, Kent wrote:
I'm getting a messy error that could be a bug, but is very likely
related to my setup of a set of 2 polymorphic classes I am attempting
to map.
One entity is a transaction and the other is a transaction_archive
record. The table structure is
No, in fact, there is no ArTranBase table at all.
If I remove concrete inheritance, how do I issue a UNION of the two
tables and have the objects polymorphically loaded?
On 7/29/2010 4:18 PM, Michael Bayer wrote:
On Jul 29, 2010, at 2:31 PM, Kent wrote:
I'm getting a messy error that
This seems to work, but I didn't find examples of this. Does this
look correct (assuming there is no parent table in the database and
all I really want is 2 'normal' mappers and a 3rd that performs a
polymorphoric_union)?
==
artran_union =
What I meant was, if you want to say session.query(ArTranBase), which it
appears that you do, then you are querying against ArTranBase.
Since it seems like you want the polymorphic_union here, when you query
ArTranBase and you want it to eagerly load trancode and paymenttype, it
would need
Right. I understand. Thanks for pointing that out, you are correct.
My bigger concern was getting the ArTranBase mapper correct. Apparently
there is no need in this case to specify with_polymorphic= in the
mapper. Did I miss documentation on using 'polymorphic_union' without
On Jul 29, 2010, at 5:00 PM, Kent Bower wrote:
Right. I understand. Thanks for pointing that out, you are correct.
My bigger concern was getting the ArTranBase mapper correct. Apparently
there is no need in this case to specify with_polymorphic= in the mapper.
Did I miss
I see that a ticket has just been opened up on this topic.
http://www.sqlalchemy.org/trac/ticket/1859
I will follow up there.
thanks,
pjjH
On Jul 29, 8:33 am, phrrn...@googlemail.com
phrrn...@googlemail.com wrote:
Is there any support yet in SQLAlchemy for Common Table Expressions
e.g.
oh weird, someone asked about window functions, and I got the two kind of
confused and responded to that person but not to you.
On Jul 29, 2010, at 6:43 PM, phrrn...@googlemail.com wrote:
I see that a ticket has just been opened up on this topic.
http://www.sqlalchemy.org/trac/ticket/1859
Sorry I wasnt monitoring this thread. Didnt get a response right away
and thought no one had responded.
I also think that theoretically there really would be not much of a
change to using sqlalchemy (within pylons - pylons already creates a
scopedsession object for every web request anyhow) in a
I've got a bunch of old sqlalchemy code using the declarative
framework where the default field values could be assigned after the
initial definition, as in this reduced example:
###
from sqlalchemy import *
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import
On Jul 29, 2010, at 11:08 PM, Russell Warren wrote:
I've got a bunch of old sqlalchemy code using the declarative
framework where the default field values could be assigned after the
initial definition, as in this reduced example:
###
from sqlalchemy import *
from
hi there
I would like to define a m:n relation between two tables that are linked by an
association table.
I am using MySQL 5.1 and SA 0.6.3
this is the select that I want to implement:
select * from
cisdata c,
cisbr cb
branchen b,
where c.ID_cis = cb.ID_cisbr and cb.ID_br
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