Hi, All.
I have found unexpected behaviour of MySQL DB. In update command order of
operations in set list is significant. I need to switch values of 2 rows.
Better see example:
mysql create temporary table sw_test (a integer not null, b integer not
null, dummy integer);
Query OK, 0 rows affected
Hello everyone!
In my application, I have a class Product that can belong to a
Category. (1 product, 1 category). The category knows which products
belong to it thanks to a backref. A product can not exist if
it doesn't belong to a category. If a category is deleted, all it's
products are deleted
Sorry, I messed up the subject of the email
-- Forwarded message --
From: Hector Blanco white.li...@gmail.com
Date: 2011/12/10
Subject: SqlAclhemy 0.6.8
To: sqlalchemy@googlegroups.com
Hello everyone!
In my application, I have a class Product that can belong to a
Category. (1
My impression was Postgresql handles this much more nicely which is confirmed
by this post:
http://beerpla.net/2009/02/17/swapping-column-values-in-mysql/
the usual way this kind of thing is done is via declaring local variables in
the SQL statement, and an example of doing such using
On Dec 10, 2011, at 7:07 PM, Hector Blanco wrote:
That data (is JSON) is sent to the Category handler. That handler
does the following
1) Creates a new Category() instance,
2) Fill the non-relationship fields (_name in this case)
3) Adds the category to the session, so it gets an _id
Thank you for your reply.
I'm not exactly sure of what is blocking the insert. I would say
SqlAlchemy, because my Foreign Keys are nullable (which raises the
question of whether it's a good design or not... but that's a
different story)
I read in the documentation:
if you have a relationship() with delete-orphan, SQLAlchemy will not let you
save the child without the parent being attached. It is more or less a bug in
that this particular check is unnecessary, and you should upgrade to 0.7.
On Dec 11, 2011, at 12:00 AM, Hector Blanco wrote:
Thank you
I would like to. I've been testing 0.7.4, and it seems to work really
fast, but my code is heavily dependent on Synonyms, which seem to be
incompatible with certain new features (I'm getting errors when I use
order_by, for instance) so, until I have time to migrate my code to
Hibrids, I'm afraid I
