On 5/5/15 1:17 PM, Brecht Machiels wrote:
Oops, was a bit too quick there...
Here's the echo='debug' output:
2015-05-05 19:16:11,528 INFO sqlalchemy.engine.base.Engine SELECT *
FROM group_counts WHERE group_id = 1
2015-05-05 19:16:11,528 INFO sqlalchemy.engine.base.Engine ()
2015-05-05 19:16:11,528 DEBUG sqlalchemy.engine.base.Engine Col
('group_id', 'value', 'count')
2015-05-05 19:16:11,528 DEBUG sqlalchemy.engine.base.Engine Row (1, 1, 6)
2015-05-05 19:16:11,528 DEBUG sqlalchemy.engine.base.Engine Row (1, 2,
12)
2015-05-05 19:16:11,528 DEBUG sqlalchemy.engine.base.Engine Row (1, 3,
103)
versus
2015-05-05 19:16:11,529 INFO sqlalchemy.engine.base.Engine SELECT
group_counts.group_id AS group_counts_group_id, group_counts.value AS
group_counts_value, group_counts.count AS group_counts_count
FROM group_counts
WHERE group_counts.group_id = ?
2015-05-05 19:16:11,529 INFO sqlalchemy.engine.base.Engine (1,)
2015-05-05 19:16:11,529 DEBUG sqlalchemy.engine.base.Engine Col
('group_counts_group_id', 'group_counts_value', 'group_counts_count')
2015-05-05 19:16:11,529 DEBUG sqlalchemy.engine.base.Engine Row (1, 1, 6)
2015-05-05 19:16:11,530 DEBUG sqlalchemy.engine.base.Engine Row (1, 2,
12)
2015-05-05 19:16:11,530 DEBUG sqlalchemy.engine.base.Engine Row (1, 3,
103)
Only the first item is returned, however.
these two queries are against the same table. I thought we were
comparing the SELECT results from a set of real tables vs. views?
I'm not yet looking at what the specifics are yet, but keep in mind the
ORM only returns full objects for rows that have a full primary key
*and* it deduplicates on primary key, because we use an identity map.
So if above, "group_counts_group_id" is your primary key, the ORM has no
choice but to give you only one object back.
Brecht
On Tue, 05 May 2015 19:14:56 +0200, Brecht Machiels
<brecht__gm...@mos6581.org> wrote:
On Tue, 05 May 2015 18:48:53 +0200, Mike Bayer
<mike...@zzzcomputing.com> wrote:
On 5/5/15 11:24 AM, Brecht Machiels wrote:
Hello,
I'm running into a problem with a database view. Please see the
attached script for a minimal example that reproduces the problem.
The code and the comments should make clear what I want to achieve.
I expect the two queries at the end of the script to return the
same result, but they don't.
Is this a bug, or am I just not understanding what is going on?
not sure. Try running your program with echo='debug' on your
create_engine(), which will illustrate the SQL statements as well as
the raw results coming back from each. If those don't match, then
that's the problem.
They look equivalent to me:
2015-05-05 19:13:18,937 INFO sqlalchemy.engine.base.Engine SELECT *
FROM group_counts WHERE group_id = 1
2015-05-05 19:13:18,937 INFO sqlalchemy.engine.base.Engine ()
versus
2015-05-05 19:13:18,938 INFO sqlalchemy.engine.base.Engine SELECT
group_counts.group_id AS group_counts_group_id, group_counts.value AS
group_counts_value, group_counts.count AS group_counts_count
FROM group_counts
WHERE group_counts.group_id = ?
2015-05-05 19:13:18,938 INFO sqlalchemy.engine.base.Engine (1,)
Best regards,
Brecht
--
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sqlalchemy+unsubscr...@googlegroups.com.
To post to this group, send email to sqlalchemy@googlegroups.com.
Visit this group at http://groups.google.com/group/sqlalchemy.
For more options, visit https://groups.google.com/d/optout.
