I am trying to get SQLAlchemy to let my database's foreign keys "on delete
cascade" do the cleanup on the association table between two objects. I
have setup the cascade and passive_delete options on the relationship as
seems appropriate from the docs. However, when a related object is loaded
i
On May 14, 2014, at 6:35 PM, Hunter Blanks wrote:
> Hi,
>
> Although SQLAlchemy supports PostgreSQL's common table expressions (i.e. WITH
> statements*) for SELECT, it does not yet seem to support them for INSERT,
> UPDATE, or DELETE.
>
> (1) Can anyone confirm that this is the case? Lest i
Ok, thanks so much for your help.
On Wednesday, May 14, 2014 2:35:27 PM UTC-7, Michael Bayer wrote:
>
>
>
> there are deferred() columns that you can set on a mapper but there’s not
> a mechanism right now to set deferred target attributes when the object is
> loaded only from a specific relati
Hi,
Although SQLAlchemy supports PostgreSQL's common table expressions (i.e.
WITH statements*) for SELECT, it does not yet seem to support them for
INSERT, UPDATE, or DELETE.
(1) Can anyone confirm that this is the case? Lest it help, I've attached
test cases for UPDATE and DELETE below.
(2)
there are deferred() columns that you can set on a mapper but there's not a
mechanism right now to set deferred target attributes when the object is loaded
only from a specific relationship without the specific call within the query().
So unless you maybe ran those options into every Query
Thanks Mike,
But...is there no way to set this behavior directly on the
"relationship()"? The whole point there is to be "lazy" ;)
Seth
On Saturday, May 10, 2014 7:59:33 PM UTC-7, Michael Bayer wrote:
>
>
> session.query(Parent).options(defaultload(“children”).load_only(“cheap_column"))
>
> o
Correct, that is what I did. Except, I do a conn.close() at the end rather
than a del.
On Tue, May 13, 2014 at 4:10 PM, Michael Bayer wrote:
>
> On May 13, 2014, at 2:23 PM, Sylvester Steele
> wrote:
>
>
> ODBC connection pooling setting did not matter. After the above change,
> code is running
I've had a look at this and submitted a patch that should make autocommit
work for the pg8000 Sqlalchemy dialect in the same way as it does for the
psycopg2 dialect https://github.com/zzzeek/sqlalchemy/pull/88.
On Friday, 9 May 2014 17:50:43 UTC+1, Tony Locke wrote:
>
> Hi, the pg8000 driver has
Hi
Looking for some guidance and advice on using xml as an update source for
my to be data web project. If I am consistently going to be updating data
into the database from XML files what is a good method?
Should I be creating a Sax parser as in this example
http://iamtgc.com/importing-xml-i
