BTW, this post started out as a reply to James but grew into a collective
summary of my thoughts on the entire thread so far. You've been warned :)
James Taylor wrote:
But wouldn't the join from orders to items be OUTER in this case
since you can have orders with a total 50 but no items.
On Nov 9, 2006, at 10:20 PM, Daniel Miller wrote:
Can you give an example of the SQL (including the joins) that would
be generated by your statement above?
(user.user_id=orders.user_id AND orders.order_id=items.order_id AND
items.item_name='item #4') OR
(user.user_id=orders.user_id AND
On Nov 10, 2006, at 12:13 AM, Daniel Miller wrote:
This query:
q.select(or_(
c.orders.items.item_name == 'item#4',
c.orders.items.item_name == 'item #5'
))
Should generate something similar to this SQL:
SELECT ...
FROM users u
INNER JOIN orders o
ON u.user_id =
but what happens if i say:
q.select(or_(User.c.orders.items.item_name == 'item#4',
User.c.orders.items.item_name == 'item #5'))
if we naively convert c.orders.items.item_name=='item #4' into
user.user_id=orders.user_id and orders.order_id=items.order_id and
items.item_name='item #4, then
Michael Bayer wrote:
but what happens if i say:
q.select(or_(User.c.orders.items.item_name == 'item#4',
User.c.orders.items.item_name == 'item #5'))
if we naively convert c.orders.items.item_name=='item #4' into
user.user_id=orders.user_id and orders.order_id=items.order_id and
Michael Bayer wrote:
ok let me rephrase that... i have concerns. i think the concerns could
be addressed, and we might be able to add this kind of feature...but i
dont want to rush into it singlehandedly.
I won't blame you for that. I'll help out as much as possible given my busy
On Nov 8, 2006, at 10:00 PM, Daniel Miller wrote:
q = session.query(User)
c = getcols(User)
q.select(
(c.addresses.street == 'some address')
(c.orders.items.item_name == 'item #4')
)
ohh, wow. heh. i had this discomfort with adding relationships
to c, but then you just
dmiller wrote:
Is there a reason why this doesn't work:
orders = Table('orders', meta,
Column('id', Integer, Sequence('order_id_seq'), primary_key=True),
...
)
items = Table('items', meta,
Column('id', Integer, Sequence('item_id_seq'), primary_key=True),
On Nov 6, 2006, at 3:31 PM, Randall Smith wrote:
dmiller wrote:
Is there a reason why this doesn't work:
...
order = session.query(Order).get(1) # assume order exists
itemsNotInOrder = session.query(Item).select(Item.c.order != order) #
ERROR!
This should work.
itemsNotInOrder =
the c namespace is only for table columns. if we wanted a namespace
that had represented mapper properties, which is not just column-mapped
attributes but relationships as well, that would be something else
altogether. we'd have to define a whole package of expression objects
that represent
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