Dnia 2011-06-17, pią o godzinie 22:47 -0400, Mark Erbaugh pisze:
Is there overhead associated with reflection? When SA is used in a stateless
web server, I think it would have to do the reflection every time a new page
is served. Is there a way to create and reuse a snapshot of the
Hi, I'm a SQLA and MySQL noob.
I have a many to one relationship somewhat similar to this:
class Parent(Base):
...
name = Column(String, primary_key=True)
class Child(Base):
...
parent = Column(String, ForeignKey('Parent.name'))
And I'm trying to do this:
session.add(Child(...,
reflection is not a fast process at all since it aims to be comprehensive.
The MetaData, Table and everything related is pickleable for the purpose of
apps that want to cache the results of reflection in a file, to be pulled out
later.
On Jun 17, 2011, at 10:47 PM, Mark Erbaugh wrote:
Is
Just curious and learning here -- There are two separate issues here,
aren't there? (1.) Atomicity of the transaction, taken care of by the
above discussion, and (2.) what if there was a need to have it be not
only atomic but consume as little time as possible between the read
and write, let's
On Jun 18, 2011, at 6:37 AM, Tomasz Jezierski - Tefnet wrote:
How about: http://code.google.com/p/sqlautocode/ ?
Thanks for the pointer. That's just the kind of module I was looking for.
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On Jun 18, 2011, at 10:37 AM, Michael Bayer wrote:
reflection is not a fast process at all since it aims to be comprehensive.
The MetaData, Table and everything related is pickleable for the purpose of
apps that want to cache the results of reflection in a file, to be pulled out
later.
I have a legacy database where dates are stored in the format mm/dd/ (i.e.
06/18/2011). Is it possible to adapte the Sqlalchemy DATE() type to use this
format? If not, is is possible to create a new class to handle this format?
Thanks,
Mark
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