Basil Shubin пишет:
Hi friends!
I have use SQLAlchemy 0.3 with MySQLdb 1.2.1 How I can lock row in
database table when I select it? So nobody can access it in same time.
BTW I use tables with InnoDB engine.
Okey, I discover 'lockmode' parameter. And how I can use it (or anything
else) to
Here's a better CascadeOptions implementation:
from sets import Set
class CascadeOptions(Set):
keeps track of the options sent to relation().cascade
def __init__(self, arg=):
values = util.Set([c.strip() for c in arg.split(',')])
if delete-orphan in values:
Using sqlalchemy rev 2102
is flush supposed to commit by itself?
Also, looks like Binary fields get flushed every time, even when not
changed..
Again, using wsgi middleware to automatically rollback if an exception
occurs in my app, I have a use case where I absolutely must commit a
autoincrement defaults to true. in previous versions of SA, this was
not even an option; SERIAL and AUTO_INCREMENT were always used for
integer primary key columns in postgres and mysql, respectively, which
is why this is the default.
note that autoincrement is meaningless for sqlite (which
flush() starts its own transaction and commits it. if you have already
opened a transaction on the current session, then it will nest inside
the larger transaction. see the SessionTransaction documentation for
details.
Also, the pickle type not getting updated is something that was fixed
in
Hi friends!
Is there standalone GUI application that using SQLAlchemy? Of course it
should be open source apps.
--
Basil Shubin
Freelance Software Developer
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Hi,
I have some questions about SqlAlchemy.
1.
I know I can define a relation on a Class and load records of the
relation in only one select (eager loading),
but I see SqlAlchemy uses a LEFT OUTER JOIN to join.
If I would filter records by a WHERE CLAUSE on a relation, I would like
to
On 11/14/06, Basil Shubin [EMAIL PROTECTED] wrote:
Is there standalone GUI application that using SQLAlchemy? Of course it
should be open source apps.
There is neither an open source nor a commercial GUI interface for SQLAlchemy.
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You
Hello there,
Is there any simple way to redirect sqlalchemy log to stderr? I did not
find any examples for this.
I'm developing a web application with sqlalchemy using web.py, and it's
quite annoying to have debug output in stdout.
Thanks,
---
Regards,
Dmitry
I am using PickleType, and Binary on the same table.. I'll see if I can
come up with a small test. These fields are being written back every
time any other field changes, even when they haven't changed.
Regarding transactions. I thought session.flush was just UOW work and
didn't actually do
let me tell you how pickletype works right now (by default, you can
change it).
there is a method on all TypeEngine objects called compare_values().
this method is now used by the attributes package when it checks if
something changed. in most cases, the method uses a the ==
comparison. In the
Mike Bernson пишет:
use the lockmode='update' on a query object.
row_obj = query_obj.select(where, lockmode='update').execute()
self.localTowns = Table('local_towns', self.metadata,
Column('id', Integer, primary_key=True),
Column('title',
Mike Bernson пишет:
use the lockmode='update' on a query object.
row_obj = query_obj.select(where, lockmode='update').execute()
self.localTowns = Table('local_towns', self.metadata,
Column('id', Integer, primary_key=True),
Column('title',
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