On Tuesday 20 March 2007 07:47:53 Benno Rice wrote:
Hi,
I'm wondering if it would be possible to have a situation where
transactions coming in from the ORM system could be sent to
multiple database servers at once.
If I were to look into adding this, where would be the best place
to
On 3/20/07, Mike Kent [EMAIL PROTECTED] wrote:
I have a many-to-many relationship between two entities, call them A
and B. This is easy enough to model in sqlalchemy using Elixir.
However, to complicate things, I need an integer column somewhere
called 'priority'. In the relationship
I found that the conenctionString is not complete, the port is
missing. Not like anywhere else, host and port must be separated by a
comma !
def make_connect_string(keys):
connectors = [Provider=SQLOLEDB]
connectors.append (Data Source=%s,%s % (keys.get(host),
keys.get(port, 1433)))
Bertrand Croq wrote:
hi,
I am currently using sqlalchemy to build SQL queries and it's a fantastic
tool! By now, I am looking for a way to build:
SELECT 'a_fixed_string', atable.col1, atable.col2
FROM atable
using the syntax:
select([XXX, atable.c.col1, atable.c.col2])
but I don't know
I also found that when trying to connect within a thread the
connection hangs. I had to use pythoncom.CoInitialize().
Example:
#
import pythoncom
import sys
sys.coinit_flags = 0
pythoncom.CoInitialize()
[ COM code here... ]
pythoncom.CoUninitialize()
More informations:
Le Mardi 20 Mars 2007 10:38, jose a écrit :
try this:
select([literal('a_fixed_string'), atable.c.col1, atable.c.col2])
Perfect ! Thanks a lot.
--
Bertrand Croq,
Ingénieur Développement
___
Net-ng Tel
Thanks Evan,
Hope that soon I'll use your tool.
Stefan
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Michael, thanks for working through this and for taking the time to
explain what's going on and to provide alternative ways to getting
this done. Your efforts to support the users of sqlalchemy are really
extraordinary.
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Gaetan,
Thanks for your response. I'd like to follow up with two questions:
1. I understand what you mean about the current way I'd have to model
this relationship
in Elixir. This would allow me full control over the intermediate
table, which means I could
put my 'priority' field in it.
label length of 18 is very small, we might have to resolve ticket
#512 first (makes the truncation size non-global).
please check my patch.
we add a attribute in dialet for this case.
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mysql.py gets MSTimestamp added, which probably subclasses
MSDateTime, which sends along TIMESTAMP, and gets a fix in
ischema_names to support reflection. colspecs dict gets
sqltypes.TIMESTAMP: MSTimestamp added.
*perhaps*, types.py should have Timestamp added to it, TIMESTAMP will
SessionTransaction will start transactions across any number of
databases, as different engines come into its querying scope. when
SessionTranasction commits, it commits all underlying transacitons.
so if you want to start all transactions at once, you can create a
new
On Mar 20, 2007, at 11:52 AM, Michael Bayer wrote:
however, this is not using two phase commit, which means that if one
commit fails, all previous commit's stay committed. if you want true
two phase commit I'd look into Zalchemy which has this feature.
actually i should correct myself -
In a traditional application you can insert a new row and read the row
within the same transaction. What is the typical usage pattern to deal with
this in SA? In our particular setup (Zope) a new session is created for
each new HTTP request and flushed automatically at the end of request when
Andreas Jung wrote:
In a traditional application you can insert a new row and read the row
within the same transaction. What is the typical usage pattern to deal
with this in SA? In our particular setup (Zope) a new session is
created for
each new HTTP request and flushed automatically at
Hi,
I have a dump question about naming conventions for foreign keys.
Using ORACLE as back-end all table names are in capital letters. So
Table object looks like:
Table('BRANCH',DynamicMetaData(),Column('id',OracleInteger(),primary_key=True,nullable=False),
it would appear the query to read back constraint information is:
SELECT
ac.constraint_name,
ac.constraint_type,
LOWER(loc.column_name) AS local_column,
LOWER(rem.table_name) AS remote_table,
LOWER(rem.column_name) AS
A patch containing tests and cleaned up identity key is attached.
~ Daniel
Michael Bayer wrote:
committed, r2409.
the row needs to have a class and entity_name present to determine
what mapper you want to use to extract from the row, so i put those as
keyword arguments for now.
unit tests:
- cant remove any unit tests - many of them are commented out here
I will check the whole unit tests to fix the comment blocks.
- changing identifier names in unit tests to handle informix ident -
e maybe, would rather informix skip those
the
So one thing we're attempting to do in a project I'm working on is
partitioning our data set across several databases based on object
keys. I've come up with a way to implement this in SQLAlchemy which
I've provided here as a mostly-complete patch.
Session objects now have a bind_func
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