[sqlalchemy] Re: group_by and column labels
Michael Bayer wrote: On Jun 7, 2007, at 7:17 AM, Huy Do wrote: Michael Bayer wrote: put strings into group_by: group_by = [client_code, client_name, ...] Hi Michael, Sorry I'm not sure what you are suggesting. I don't really want to retype my column names again in the group_by clause. i was suggesting a workaround. just thought i might have missed something. thanks. My intention was to be able to reuse the actual column list in the group by clause. would be easier if you can wait for 0.4 on that. Not a problem. Just though it was a nice thing to have, because I have always hated retyping all those columns names when i need group by in my sql. Thanks Huy --~--~-~--~~~---~--~~ 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: group_by and column labels
Hi Rick, If this works, that is fine for me. I just don't want to retype my columns to avoid errors. I'll test and then send an update. Thanks Huy I think the .name property of a labled column holds the label, so how about db.job_table, db.client_table, db.service_type_table], group_by = [col.name http://col.name for col in group_by], On 6/7/07, *Michael Bayer* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: On Jun 7, 2007, at 7:17 AM, Huy Do wrote: Michael Bayer wrote: put strings into group_by: group_by = [client_code, client_name, ...] Hi Michael, Sorry I'm not sure what you are suggesting. I don't really want to retype my column names again in the group_by clause. i was suggesting a workaround. My intention was to be able to reuse the actual column list in the group by clause. would be easier if you can wait for 0.4 on that. --~--~-~--~~~---~--~~ 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: group_by and column labels
I think the .name property of a labled column holds the label, so how about db.job_table, db.client_table, db.service_type_table], group_by = [col.name http://col.name for col in group_by], This almost worked, but not quite. Using the name column, does give me the label, but it also only gives the column name, which is a problem when you have tables with the same column in the from clause (Ambiguous column error from the db server). The select column statement has table.column_name whilst the group by (using the method above) only has column_name or label_name. If i use use_labels option for the select statement, it works, because then the label names are unique across all columns. thanks Huy On 6/7/07, *Michael Bayer* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: On Jun 7, 2007, at 7:17 AM, Huy Do wrote: Michael Bayer wrote: put strings into group_by: group_by = [client_code, client_name, ...] Hi Michael, Sorry I'm not sure what you are suggesting. I don't really want to retype my column names again in the group_by clause. i was suggesting a workaround. My intention was to be able to reuse the actual column list in the group by clause. would be easier if you can wait for 0.4 on that. --~--~-~--~~~---~--~~ 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: group_by and column labels
Michael Bayer wrote:
put strings into group_by:
group_by = [client_code, client_name, ...]
Hi Michael,
Sorry I'm not sure what you are suggesting. I don't really want to
retype my column names again in the group_by clause.
My intention was to be able to reuse the actual column list in the group
by clause.
Thanks,
Huy
On Jun 6, 2007, at 7:07 PM, Huy Do wrote:
Hi,
I am trying to reuse my column list in my group by clause but some
of my
columns use label() which is causing a sql syntax error because of the
column as label in the group by clause. Is it possible to get the
group_by to only use the label side of a column .
eg. (This doesn't work because of the labels
group_by = [
service.date,
service.client_id,
service_type.type_code,
service.service_code,
client.code.label('client_code'),
client.name.label('client_name'),
func.coalesce(func.nullif(client_rate.description,
''),
service_type.description).label('service_description'),
service.rate_amt
]
columns = group_by[:].extend([
func.sum(service.quantity).label('quantity'),
func.sum(service.service_amt).label('service_amt')
])
s = select(columns, criteria,
from_obj=[outerjoin(db.service_table,
db.client_rate_table),
db.job_table, db.client_table, db.service_type_table],
group_by=group_by,
order_by=[service.date, client.name, service.service_code]
)
Many thanks,
Huy
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