[sqlalchemy] create indexes on function
Is it possible to create indexes using a function using sqlalchemy and postgresql? Something like: create index idx on table (lower(table.field)) Thanks, Steve --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: server_side_cursors
I may be missing something fundamental here, but why doesn't it
already know the metadata since I defined the columns in which I'm
interested?
thing_table = sa.Table(thing, md, sa.Column('id', sa.Integer,
primary_key = True))
On 3/17/07, Michael Bayer [EMAIL PROTECTED] wrote:
the cursor metadata often cannot be read until fetchone() is called
first. the current result set implementation we have doesnt call
fetchone() before it tries to get the metadata, and normally it
shouldnt (since the result set doesnt even know if its the result of a
select/insert/whatever). id like an alternate result set class to go
into effect when PG/server side cursors/select is used to do this, i
think someone was supposed to send a patch. its hard for me to
develop since my version of PG 8.1 doesnt seem to reproduce the issue.
On Mar 17, 8:14 pm, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I was excited to see the server_side_cursors option that was added
recently.
I saw the reports of it not working with autoload = True, but I've
been having trouble getting it to work at all.
When attempting to select a row using:
t2.select().execute().fetchone()
I get:
INFO sqlalchemy.engine.base.Engine.0x..d0 SELECT thing.id FROM thing
INFO sqlalchemy.engine.base.Engine.0x..d0 {}
Traceback (most recent call last): File stdin, line 1, in ?
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py, line
811, in __repr__
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py, line
671, in _get_col
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py, line
659, in _convert_key
sqlalchemy.exceptions.NoSuchColumnError: Could not locate column in
row for column '0'
This query runs fine without server_side_cursors = True
Any suggestions?
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[sqlalchemy] Re: server_side_cursors
SQLAlchemy's result wrapper, ResultProxy, then calls:
metadata = cursor.metadata
My question was why doesn't ResultProxy use the sqlalchemy metadata I
defined when I defined the sqlalchemy Table?
to psycopg2 versions, PG setup, or what. if we can determine its a
psycopg2 version issue, then everyone can just upgrade.
which version are you using?
On Mar 17, 2007, at 8:41 PM, Steve Huffman wrote:
I may be missing something fundamental here, but why doesn't it
already know the metadata since I defined the columns in which I'm
interested?
thing_table = sa.Table(thing, md, sa.Column('id', sa.Integer,
primary_key = True))
On 3/17/07, Michael Bayer [EMAIL PROTECTED] wrote:
the cursor metadata often cannot be read until fetchone() is called
first. the current result set implementation we have doesnt call
fetchone() before it tries to get the metadata, and normally it
shouldnt (since the result set doesnt even know if its the result
of a
select/insert/whatever). id like an alternate result set class
to go
into effect when PG/server side cursors/select is used to do this, i
think someone was supposed to send a patch. its hard for me to
develop since my version of PG 8.1 doesnt seem to reproduce the
issue.
On Mar 17, 8:14 pm, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I was excited to see the server_side_cursors option that was added
recently.
I saw the reports of it not working with autoload = True, but I've
been having trouble getting it to work at all.
When attempting to select a row using:
t2.select().execute().fetchone()
I get:
INFO sqlalchemy.engine.base.Engine.0x..d0 SELECT thing.id FROM thing
INFO sqlalchemy.engine.base.Engine.0x..d0 {}
Traceback (most recent call last): File stdin, line 1, in ?
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py,
line
811, in __repr__
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py,
line
671, in _get_col
File build/bdist.linux-x86_64/egg/sqlalchemy/engine/base.py,
line
659, in _convert_key
sqlalchemy.exceptions.NoSuchColumnError: Could not locate column in
row for column '0'
This query runs fine without server_side_cursors = True
Any suggestions?
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