Michael,
On 03/10/2013 23:05, Michael Bayer wrote:
On Oct 3, 2013, at 5:42 AM, Werner werner.bru...@sfr.fr wrote:
...
The relation setup for the classes involved, and I suspect
Vintage.drinkinfo/Cellarbook.drinkinfo ones:
Vintage.vintadd = sao.relationship('Vintadd', uselist=False,
T_T
Hi, I am using SQLAlchemy 0.8.2 with PostgreSQL and having exactly same
problem.
I have a lot of table classes inherited declarative base and only some of
classes raise errors. (https://gist.github.com/yoloseem/d1c9b0f8d3cef6c196e4
)
Actually, even for same buggy classes, errors are
Dear all,
I've a table where the date is separated in single fields, one for
year, one for day and one for month. So I need to query for a date
range. I search in Internet and I found the following query that seems
to be works:
SELECT *
FROM plan
WHERE year * 1 + month * 100 + day BETWEEN
You can create a custom field in your model and check against it:
class Plan(Base):
.
.
.
@property
def calculated_date(self):
return date(self.year, self.month, self.day)
Then, in your query, use that field:
I'm sorry, you should use hybrid_property:
from sqlalchemy.ext.hybrid import hybrid_property
class Plan(Base):
@hybrid_property
def calculated_date(self):
return date(self.year, self.month, self.day)
Also, in your query, don't use between:
session.query(Plan).\
this is definitely not related to any issue from 2007. See what happens if
you call sqlalchemy.orm.configure_mappers() right before you emit that Query in
this particular test.the error indicates this particular class was not
present when the mappers post-configured themselves.
On Oct
On Fri, 4 Oct 2013 16:25:00 +0300
Ofir Herzas herz...@gmail.com wrote:
I'm sorry, you should use hybrid_property:
from sqlalchemy.ext.hybrid import hybrid_property
class Plan(Base):
@hybrid_property
def calculated_date(self):
return date(self.year, self.month, self.day)
Hello all,
I am trying to migrate some custom ORM code to use SQLAlchemy instead for
database interactions. I'm having some issues with proper session
management. The main issue that seems to occur is the operationalerror
'mysql has gone away' with every now and then one comes up
On Fri, 4 Oct 2013 16:03:18 +0200
Enrico Morelli more...@cerm.unifi.it wrote:
On Fri, 4 Oct 2013 16:25:00 +0300
Ofir Herzas herz...@gmail.com wrote:
I'm sorry, you should use hybrid_property:
from sqlalchemy.ext.hybrid import hybrid_property
class Plan(Base):
On Fri, Oct 4, 2013 at 3:47 PM, Russell Holloway
russ.d.hollo...@gmail.com wrote:
Hello all,
I am trying to migrate some custom ORM code to use SQLAlchemy instead for
database interactions. I'm having some issues with proper session
management. The main issue that seems to occur is the
I'm not sure that will work on it's own, will it? When used in a class
context (Plan.calculated_date), you will end up calling the date
function with 3 SQLAlchemy column objects, which won't work.
At a minimum, you'd need this:
class Plan(Base):
@hybrid_property
def
That query looks weird.
I'd suggest converting everything to a date in the database and having the
db sort it --
on postgres it would look like this --
create table test_date ( id serial primary key not null , int , mm int
, dd int );
select *
from
test_date
where
(
Enrico, It should be available on 0.7.10
Simon, you are right. The expression is indeed a must.
class Plan(Base):
@hybrid_property
def calculated_date(self):
return date(self.year, self.month, self.day)
@calculated_date.expression
def calculated_date(self):
Converting strings to lower case and comparing them is not the same as a true
case-insensitive comparison. Python 3.3 adds a str.casefold method for this
reason. The docs for that method give a good explanation of the distinction:
Casefolding is similar to lowercasing but more aggressive
Today I found if I have an id column in a table, and the autoincrement
attribute is True, when I created the table it's right, but when I print
the create statment is not right for autoincrement. The testing code is:
from sqlalchemy import *
from sqlalchemy.schema import CreateTable
engine =
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