I second Eric's opinion, the EntitySingleton is an useful recipy and I
used it in SQLAlchemy 5. I think it can be used in your situation well
On Nov 18, 6:51 pm, Eric Ongerth [EMAIL PROTECTED] wrote:
Faheem,
On a closely related note, you may find the following 'usage recipe'
interesting,
a guaranteed stable way that doesn't rely on SQLAlchemy implementation
details and is easy to understand is here. this is how I would do it:
http://pastebin.com/f6670eebe
Joril wrote:
Hi everyone!
I'm still working on implementing data logging with SQLAlchemy
(=whenever someone updates a
On 19 Nov, 16:28, Michael Bayer [EMAIL PROTECTED] wrote:
a guaranteed stable way that doesn't rely on SQLAlchemy implementation
details and is easy to understand is here. this is how I would do it:
http://pastebin.com/f6670eebe
I see, many thanks for yor time :)
Out of curiosity, is there a
Joril wrote:
On 19 Nov, 16:28, Michael Bayer [EMAIL PROTECTED] wrote:
a guaranteed stable way that doesn't rely on SQLAlchemy implementation
details and is easy to understand is here. this is how I would do it:
http://pastebin.com/f6670eebe
I see, many thanks for yor time :)
Out of
On 19 Nov, 17:22, Michael Bayer [EMAIL PROTECTED] wrote:
Out of curiosity, is there a solution that wouldn't require creating
new instances of the objects?
(Some magic incantation like the del instance_state(entity).key you
suggested me some time ago, I guess..?)
not really since you'd
Joril wrote:
I see.. But - sorry if I insist - are you implying that it would be
too difficult to do? I know it'd be a kind of ugly hack, but since I
spent almost the whole day looking for it, now I'm wondering if I was
looking for something that doesn't exist at all X-)
you'd need to use a
For Query there is an add_column() method, but I do not see a remove
column method.
Initializing a Query requires a full mapped class, so how can I select
on only a subset of the columns.
I want to do this for ding a DISTINCT query on only a couple of
columns.
TIA
Moshe
0.4.6
On Nov 19, 11:12 pm, Bobby Impollonia [EMAIL PROTECTED] wrote:
What version of SQLA are you using? In .5 , you can pass individual
columns instead of a mapped class to session.query.
On Wed, Nov 19, 2008 at 12:17 PM, Moshe C. [EMAIL PROTECTED] wrote:
For Query there is an
Yeah, with .4 there isn't really a way have an ORM query that doesn't
select at least one ORM object (possibly with additional columns/
objects added via add_column/ add_entity). You can use the select()
construct instead if pulling all the columns of the mapped class is
unacceptable.
On Wed,
0.4.7 and above supports query.values(col1, col2, ...) . use that.
Bobby Impollonia wrote:
Yeah, with .4 there isn't really a way have an ORM query that doesn't
select at least one ORM object (possibly with additional columns/
objects added via add_column/ add_entity). You can use the
I gave it a shot but I am no closer to knowing how to do this.
On Nov 19, 12:00 am, Michael Bayer [EMAIL PROTECTED] wrote:
joining to a subquery is better accomplished outside of relation()
using query, such as query(USZipCode).join((subquery,
subquery.c.col==USZipCode.somecol)).
Now
query.distinct().values() or
query.values(func.distinct(func.count(table.c.column)))
Moshe C. wrote:
How would that work with distinct() ?
I see it returns an iterator and not a Query.
On Nov 19, 11:39 pm, Michael Bayer [EMAIL PROTECTED] wrote:
0.4.7 and above supports query.values(col1,
if 0.4.6 works you're great. take a look at the changelog to see what
bugs have been fixed between 0.4.6 and 0.4.8.
Moshe C. wrote:
I have tried it out on 0.4.6 and it is working nicely.
You mentioned 0.4.7 .
Is there any bug I should be aware of in 0.4.6?
I cannot upgrade in the near
its impossible to know what you want without seeing literal SQL but this
is the general idea
from sqlalchemy import *
from sqlalchemy.orm import *
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
class USCity(Base):
__tablename__ = 'cities'
id =
Apparently, nothing changed specifically with the values()
functionality.
It was added as _values() in 0.4.5 .
I guess 0.4.6 was the release of this feature, then.
Cool.
Thanks for your help
On Nov 20, 12:47 am, Michael Bayer [EMAIL PROTECTED] wrote:
if 0.4.6 works you're great. take a
hi there,
thanks for this. Has cleared alot of things up.
thanks again for the nice library.
On Nov 17, 3:34 pm, Michael Bayer [EMAIL PROTECTED] wrote:
On Nov 17, 2008, at 7:17 AM, Power Button wrote:
What I have tried is putting all the setup instructions into a class
and
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