Hi,
that example code works for me in PostgreSQL, after adding unique=True
on the name attribute of User, and reversing the order of the drop
calls. I don't have a MySQL to try against. Did you get the exact same
error from it when running against MySQL?
As for your actual app:
1. the log
Hi all,
I have some 'child' tables which inherit from the same 'master' table,
now I'd like to delete some entries from all tables. The 'where'-part
comes solely from the master table.
I have decided to use Concrete Table Inheritance since I don't need
the inheritance at points other than
sqlalchemy version 0.5.3 sqlalchemy.text() used to return float
results when the database type was numeric while sqlalchemy.select()
would return decimal results, which was the desired result. In order
to avoid this I used an output type handler to ensure that all NUMERIC
results from the
Hi all,
This is a topic that has been discussed before, but I haven't been
able to successfully implement any of the proposed solutions in my own
code. I've created a few Views in my postgres database, and I'm
looking for a way to simply query them from sqlalchemy. I tried just
treating them as
On Nov 8, 2010, at 1:16 PM, Adrian wrote:
Hi all,
This is a topic that has been discussed before, but I haven't been
able to successfully implement any of the proposed solutions in my own
code. I've created a few Views in my postgres database, and I'm
looking for a way to simply query
On Nov 8, 2010, at 11:59 AM, ACB wrote:
sqlalchemy version 0.5.3 sqlalchemy.text() used to return float
results when the database type was numeric while sqlalchemy.select()
would return decimal results, which was the desired result. In order
to avoid this I used an output type handler to
On Nov 8, 2010, at 1:16 PM, Adrian wrote:
Hi all,
This is a topic that has been discussed before, but I haven't been
able to successfully implement any of the proposed solutions in my own
code. I've created a few Views in my postgres database, and I'm
looking for a way to simply query
On Nov 8, 2010, at 11:02 AM, Mene wrote:
Hi all,
I have some 'child' tables which inherit from the same 'master' table,
now I'd like to delete some entries from all tables. The 'where'-part
comes solely from the master table.
I have decided to use Concrete Table Inheritance since I don't
On Nov 8, 2010, at 2:33 PM, Jon Nelson wrote:
I'd like to translate a SQL statement:
UPDATE foo SET colA = bar.colB FROM bar WHERE foo.colC = bar.colC;
I get this far, but am not sure how to add the FROM:
stmt = foo_table.update()\
.where( foo_table.c.colC == bar_table.c.colC )\
Thanks for the quick reply, this is exactly what I was looking for!
Thanks again,
Adrian
On Nov 8, 2:29 pm, Michael Bayer mike...@zzzcomputing.com wrote:
On Nov 8, 2010, at 1:16 PM, Adrian wrote:
Hi all,
This is a topic that has been discussed before, but I haven't been
able to
Is firebird 2.5 working with sqla. ?
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Hello everyone...
I'm trying to use a custom collection to connect (or relate) two
classes but I haven't been able to do it. Maybe I got the whole
concept of the custom collections wrong, but let me explain what I am
doing (and see if someone can give me a hint, or something)
I have a Parent
When I create a non-primary mapper for my class to add an additional
computed value in certain contexts when the query runs I get the
error:
AssertionError: No such polymorphic_identity 'M' is defined
This works fine with the primary mapper as several classes are defined
as having polymorphic
On Nov 8, 2010, at 6:17 PM, William wrote:
When I create a non-primary mapper for my class to add an additional
computed value in certain contexts when the query runs I get the
error:
AssertionError: No such polymorphic_identity 'M' is defined
This works fine with the primary mapper as
not sure if anyone knows. I have 2.1 running here for my own tests.
On Nov 8, 2010, at 5:05 PM, Domingo Aguilera wrote:
Is firebird 2.5 working with sqla. ?
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I've been working with a client server GUI app that uses sqlalchemy to
handle many backends ( sqlserver, mysql, postgresql , etc ). Now one
customer wants that app running with firebird. When I create the
tables it seems that primary keys columns are not using
generators ( which is the thing
the FB dialect uses sequences. You have to use the Sequence() construct on
your PK columns with Firebird.
On Nov 8, 2010, at 8:32 PM, Domingo Aguilera wrote:
I've been working with a client server GUI app that uses sqlalchemy to
handle many backends ( sqlserver, mysql, postgresql , etc ).
Ahhh, thank you very much, the following seems to be working for me
now:
results = Session.query(Content, Column('distance', Float))\
.from_statement(text(stmt)).all()
contents = []
for content, distance in results:
content.distance = distance
I wonder if you have a very simple example of this. Tks in advance.
On Nov 8, 8:13 pm, Michael Bayer mike...@zzzcomputing.com wrote:
the FB dialect uses sequences. You have to use the Sequence() construct on
your PK columns with Firebird.
On Nov 8, 2010, at 8:32 PM, Domingo Aguilera wrote:
Forget about this Michael, I've found the way.
i.e.
id = Column( Integer, Sequence( column_seq_id, optional = True ),
primary_key = True )
On Nov 8, 8:27 pm, Domingo Aguilera domingo.aguil...@gmail.com
wrote:
I wonder if you have a very simple example of this. Tks in advance.
On Nov 8,
Hello,
Does SQLAlchemy support read-write splitting? It seems not mentioned in
the document. Or does it is not intended to support in ORM layer? This
is somehow important for scaling , and could be convenient if we can
achieve this in SQLAlchemy.
Thanks,
Li-Wen
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