Hi,
I have to load a table from 2 different data-sources witch each having
3 different primary keys. This is because those 2 datasources are
already exported from 3 databases from an archaic application.
From those 2 datasources I created - after normalising - 3 new tables.
The main table
Hi,
I'd like to know how to implicitly access attributes in many to many
relations. Let's assume the following existing tables:
person_table=Table('person',metadata,
Column('personid',Integer,primary_key=True),
Column('name',String(50))
address_table=Table('address',metadata,
Well, you could specify the primaryjoin as described here:
http://www.sqlalchemy.org/docs/adv_datamapping.myt#advdatamapping_properties_customjoin
but I suspect that your existing mapper will Just Work if you switch
to a composite FK, rather than 3 keys on individual columns
t_bovines = Table(
Jonathan Ellis wrote:
Well, you could specify the primaryjoin as described here:
http://www.sqlalchemy.org/docs/adv_datamapping.myt#advdatamapping_properties_customjoin
but I suspect that your existing mapper will Just Work if you switch
to a composite FK, rather than 3 keys on individual
On Jan 9, 2007, at 5:24 AM, Michele Petrazzo wrote:
Because, like what I wrote on the psycopg2 ml (lists.initd.org/
pipermail/psycopg/2007-January/005250.html)
without the server side cursor, the memory usage on the client
side is proportionally at the number of records returned by the
I am experimenting with autoloading tables from Oracle (9.2) running on a
remote machine. Normal selects using cx_Oracle work just fine. Here is
what I get:
from sqlalchemy import *
eng = create_engine('oracle:// ...')
md = BoundMetaData(eng)
g2r = Table('gene2refseq',md,autoload=True)
Michael Bayer wrote:
On Jan 9, 2007, at 5:24 AM, Michele Petrazzo wrote:
Because, like what I wrote on the psycopg2 ml (lists.initd.org/
pipermail/psycopg/2007-January/005250.html)
without the server side cursor, the memory usage on the client
side is proportionally at the number of
thats really weird, since you can see the SQL + bind params right
there and they are all bound. We have made some changes to Oracle
reflection recently but the unit tests were passing on my linux box,
as well as on the machine of the person who contributed the changes.
so i would ask can
OK well this is all quite disturbing !
I would want to examine this more closely. but, lets assume this is
really how it is, since thats how it looks (eesh).
So, you dont really want to use named cursors, you just want psycopg2
to use cursors in its underlying operations so that it has
Hi alchemists!
Is there any way to have SA do some custom work before it creates a
table? I tried to subclass Table and override create, which
obviously doesn't work that easily. Any suggestions or ideas?
The background is, I have some objects that dynamically add columns to
the table on
On 1/9/07, Daniel Haus [EMAIL PROTECTED] wrote:
Hi alchemists!
Is there any way to have SA do some custom work before it creates a
table? I tried to subclass Table and override create, which
obviously doesn't work that easily. Any suggestions or ideas?
The background is, I have some
Hi,
Using MSSQL, session.flush() doesn't always fetch primary keys back from
the database. It works if you explicity specify a sequence, but if the
sequence is implicitly created it doesn't fetch. I have raised ticket
#415 for this issue.
In MSSQLExecutionContext, it looks to see if any
On 1/9/07, Andrija Zarić [EMAIL PROTECTED] wrote:
This very strange, because SQLAlchemy is issuing the query like it is
supposed to do. There is bind variable (table_name) but for some
reason cx_Oracle/Oracle is raising ORA-1008.
Can you assert that following is working:
import cx_Oracle
Am Dienstag, 9. Januar 2007 17:01 schrieb Michael Bayer:
we do have an extension called associationproxy that is used for
something similar with association objects...it may give you some
ideas on how to proxy attributes across. i dont think you should
approach the idea of adding individual
Hi Rick,
I think we're actually agreeing about almost everything, although I have
responded to your points individually. Lets see what Michael says about
this. Actually reading over my post again, my preferred fix was a little
hidden at the bottom. I will highlight it here:
The fix that
the current behavior of SA is to utilize the databases implicit PK
generation feature *if one is available*. the three databases that I
know have this are sqlite (send None in to a PK INSERT, it gets
generated), MySQL (AUTOINCREMENT) and Postgres (SERIAL/BIGSERIAL,
which results in the
Jose,
Try it without the level=, format=, and datefmt= options in
logging.basicConfig() (leaving in only filename= and filemode=) and I
think it'll work. Then you can try adding in the other options one at
a time and see if you can get them to work. When I only had filename
and filemode
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