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On Wed, 28 Jan 2009 01:28:31 +0200, a...@svilendobrev.com
wrote:
> i have recently stumbled on similar - the rowproxy's __hash__ was
> missing. so i have to tuple() them before usage. Then there was
> Mike's question, what should the RowProxy emulate? the t
On Jan 27, 2009, at 6:28 PM, a...@svilendobrev.com wrote:
>
> i have recently stumbled on similar - the rowproxy's __hash__ was
> missing. so i have to tuple() them before usage.
that doesnt strike me as a similar issue. we should apply that patch
someone had to detect python < 2.6 and plac
On Wednesday 28 January 2009 01:34:30 Michael Bayer wrote:
> On Jan 27, 2009, at 6:28 PM, a...@svilendobrev.com wrote:
> > i have recently stumbled on similar - the rowproxy's __hash__ was
> > missing. so i have to tuple() them before usage.
>
> that doesnt strike me as a similar issue. we shoul
theoretically - this might make a+b+c+d look like a+(b+(c+d)). Which
isn't that bad, except that SA does not level-indent parenthesised
expressions, and the sql is going to look like lisp program... but
yes, u're right, SA relies on some python precedence and
associativity being same as SQL on
On Jan 27, 2009, at 6:14 PM, Jon Nelson wrote:
>
> I recently ran into an issue. Is it a bug? No. However, it made my
> brain hurt for a little bit until I remembered the SQL precedence
> rules for AND and OR.
>
> The operator precedence of AND and OR is known (AND takes precedence).
> However,
it still is needed if you explicitly need an alias() of your SELECT
statement. joining to it, embedding it within aliased().haven't
figured out yet if there's some way to make it "automatic" in all
cases or if thats appropriate.
also more controverially im thinking of adding a .c. to Q
i have recently stumbled on similar - the rowproxy's __hash__ was
missing. so i have to tuple() them before usage.
Then there was Mike's question, what should the RowProxy emulate?
the tuple of the row, or something else?
> Today I attempted to serialize the return value of the form
>
> result =
I recently ran into an issue. Is it a bug? No. However, it made my
brain hurt for a little bit until I remembered the SQL precedence
rules for AND and OR.
The operator precedence of AND and OR is known (AND takes precedence).
However, it can make humans hurt their brains a bit to see SQL without
Hi,
Today I attempted to serialize the return value of the form
result = conn.execute(text(""))
Till now I thought that the return type was a list of tuples, while in
fact it is a list of objects of type . Hence cPickle refused to serialize
till I did some conversion.
Just wondering what th
> im committing something that will make that exact phrase work (its in
> rev 5734). using a released version of SQLA, for now say
> id.in_(query.statement).
I took at look at those changes and they look awesome! If I understand
the changes correctly, however, then I wonder what purpose subquer
I found this to be an interesting little problem. The task can be
accomplished by using the text of a statement to construct a new
string then executing.
Here is a simple recipe using SQLite. I'm sure it can be extended
fairly easily, and should work in any standard SQL environment
import sqlal
On Tue, Jan 27, 2009 at 14:31, Michael Bayer wrote:
>
> there's nothing stopping you from just executing the SQL directly.
> I've never actually heard of CREATE TABLE AS before, but I just
> checked it out and you can certainly generate the SQL programmatically
> from a select, by inspecting each
On Jan 27, 2009, at 10:14 AM, Jon Nelson wrote:
>
> My understanding is that some databases prefer the explicit JOIN
> syntax from an optimization POV, and of course the explicit JOIN
> syntax is ANSI SQL. Googlin' suggests that the ANSI syntax is
> preferred (perhaps even required) by some engi
there's nothing stopping you from just executing the SQL directly.
I've never actually heard of CREATE TABLE AS before, but I just
checked it out and you can certainly generate the SQL programmatically
from a select, by inspecting each column in the select statement's "c"
collection.
(I thought this might be a FAQ, but I can't find it, and searching
isn't turning up anything either...).
Am I right n thinking it is not possible to do "CREATE TABLE AS"
in SQLAlchemy? In other words, creating a table from a select
statement?
I'm using 0.4 and Oracle. If it is possible I
I have a question about implicit vs explicit joins in SA.
I have three tables with an odd relationship (legacy DB issues).
Assume tables 'accounts' and 'account_config' and a secondary table
'account_to_config'. The true nature of the relation is 1:1, however
(again, it's an inherited schema...)
Thanks very much for that detailed explanation which has proved very
helpful.
In the end it turns out that the particular construct I need is the simple:
mapper(MyClass, table, properties={
"timeunits": synonym("time_units")
})
coupled with a data-descriptor for 'timeunits' on the object
I'm developing a small twisted/pyqt/sqlalchemy application (data acquisition
soft and control). I have a GUI where I have to show some data from my
beautiful SA model. This gui is built on PyQt. PyQt has a nice set of data
access classes, but they use _raw_ SQL, that's OK for most people using
Hi,
I have a Subscriber and an Address table. Subscriber can have many
Addresses
mapper(Subscriber, subscriber_table, properties={
'addresses' : relation(Address, collection_class=Addresses,
backref='customer')})
>From the a Subscriber object, I want to inspect all loaded objects in
any c
Thanks for that, I think I should have made my question a little clearer,
(it works for what I was asking but not what I want it to do).
spec_names = join(species_table, species_names_table,
and_(species_table.c.rank=="species",
species_table.c.taxa_id==species_names_table.c.taxa))
mapper(Species,
On 24 Gen, 23:31, Rick Morrison wrote:
> > Oh... i didn't explain myself... I mean that it's already empty at the
> > first cycle of the loop...
>
> It would be normal to not enter the loop if you haven't yet opened any
> connections, as connections are opened on demand. Make sure your program
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